By itself, this video is out of context - This video answers all of your lawn mower carb questions: th-cam.com/video/gmPtCmL-Ldw/w-d-xo.htmlsi=ZXmfEXXmKuxU79Lr
there was a guy who did this in the past and it didn't end well for him... he added some electric part to atomize the fuel as well and claimed to get even more MPG, be careful
@@VenturaITfunny you posted this just now and my buddy was just talking about this the other day. As well as this guy's last post appears to be from over a year ago... 😮
Yes, they have created Fuel injection as a gimmick to sell more cars and to waste more fuel to sell more fuel. In the USA you simply can not import some high MPG European cars. Let that sink in. Like the Mercedes Smart car Diesel, that is getting 70 MPG, can not be imported in to the USA.
@Bass N Brass and once you have that a new flavor of the month will be there to keep you divesting your money. cant have the plebs building wealth by inesting in things that increase in value over time afterall.
@Bass N Brass Yep some dude made something similar back in the 70's super efficient carb but suddenly he went missing. Those big oil tycoons & governments don't like the common people messing with their profits that's for sure. The world out there is a nasty place you have to be careful who you step on, but I don't think it's too much of a risk now days the criminals are moving over to EV's you're right there Bass N Brass.
you'd be surprised how much gas you'd save if you let your car naturally (and obviously reasonably) slow down to your stop. On my Corolla iM I get like 35-40mpg on the street daily. It's not the acceleration so much that messes with your mpg as the sudden stops... just wasting all that momentum.
The carb cheater ties this all together nicely where the static carb becomes fairly dynamic. Should I do more with it, or is everyone pretty tired of the engineering stuff?
Uhh, more of course? Carbs are incredibly more interesting than any form of fuel injection will ever be. Just how much MPG can you grind out of this old rod, and do you think it's possible to do so well on other carbureted engines?
if you can reproduce this result consistently you should try to get a patent on the system and get with a company to start making kits. in this economy you might have a gold mine brother.
I am a mechanic for over fifty year, mostly Ford, and am very impressed by your results with this 302 lawn mower carb results. Wish you were my close neighbor, love to trade information. You've got it together!
You actually believe this bull $hit? I'm surprised a man of your experience would believe this bull $hit. 31 years in the industry myself. What about A/F ratio? Is it stokometric or even close? If it's too lean the N0X emotions would be through the roof! How's the power, driveability? I call BULL $HIT!!!
my dad always said there was a 40mpg carb that the oil companies purchased and put on the shelf to protect their businesses. Imagine if cars in the 70s put this on non-performance models. 40MPG on v8s
I was an engine machinist/builder for JMS Racing Engines...we were in all the magazines. We built engines for the top Sportsman class at Willow Springs and everyone with our engines finished in the top 5 every race. This class was limited to 350 c.i and a holley 390 cfm 2 barrel. We got over 430hp out of these engines on our dyno. We did cheat a little on the c.i. but the point is that you dont need a big carb to make power.
High quality fuel + tuning. Seen what an experienced port-n-polisher can do with a stock block. Shows even tried and true designs always had more room for improvement
It has been proven that a bigger carb always means bigger power. I guess if you are using a small cubic inch motor that doesn’t physically need more airflow it wouldn’t matter. But if that 350ci motor with a 2barrel 390cfm makes 430hp you could easily make 550hp with a 600cfm. Richard done this test on a 292ci 4.8L and 326ci 5.3L and a 364ci 6.0L and a 408ci he done test with a Holley 500cfm -650cfm-850cfm and 1150cfm. Every motors made more power down low with the smaller carbs. But they always made more peak power with the biggest carb. Unless it was cubic inch limited. Say the 4.8L the 4.8L stopped making power when the 850cfm was installed. It made les power initial throttle hit after 1150 was installed. It flat lined around the same as the 850cfm . The motor couldn’t physically pull anymore air in.. now the 408ci gained power everywhere with the 1150cfm over the 850cfm other than first initial throttle hit. It was the same or slightly less. Only reason why is because the smaller carb had more velocity at lower rpms vs the bigger carb. So it recived more airflow on throttle wack. But once the rpms got up the 1150 velocity woke up.
@@AtfSucks-gov That's not always the case. You can do all kinds of things on a Dyno, but the difference in the real world between a 600 and a 750 was a couple tenths in the 1/4 with all my cars
This is totally mind boggling man!! Please take this on a 200 to 300 mile trip and report back to us.....PLEASE!! You have definitely hit on something big here!!! Also, would love to see a dyno pull just to see what it's producing.
And at the Dyno it all becomes clear he has half the power. There is no magic carb that saves 50% if your mileage. Only on TH-cam... And after 3000 miles nice wholes burned in his pistons...
I'd love to see a longer test drive with this system, like 200 miles of highway to get a better figure on MPG. This is amazing, keep up the great work!
Agreed. Do a round trip back to the same exact pump same position at least 5 gallons worth of fuel. You’ll get a close to scientific measurement of fuel economy. Both ways exclude air/wind mostly.
Holy shit batman! My uncle did this back in the early 1960's and got almost 50 mpg on his V8 Chevy Impala. No one believed it. No one cared because fuel prices were so low back then. When he attempted to obtain a patent GM bought him out with a deal that he "could not refuse". He was paid cash and they provided him with a new car every two years for the rest of his life. Just goes to prove that if our government was really serious about saving the planet we would be driving with some of these modifications today.
@@alexandria6063 I have to fix my 95 f150 computer because I keep stalling out. A new one is like $300. But I can refurbish it myself for $10 worth of capacitors that I can solder on myself. There's a place for computers, but "modern" cars have gone too far toward becoming tech devices instead of transportation.
@@jamiel9902 Carbs have a sweet spot of perfect mixture but only for a certain level of the air flow. So a big carb will have its sweet spot on certain airflow while the small one will have it at low airflows. Since the best mix is 16part of air to 1 of petrol ... this is the target ... but very difficult to obtain for all the real engine loads situations in daily use. For a track car engine things become much more simple... But since the engine displacement= volume is always attempting to pull the same amount of air despite the engine load required ... it becomes difficult to find the perfect balance in sizing the carbs and obtaining the mix required.
I concur, Sir! You have a new Subscriber, and All notifications from me. If I could give you two thumbs up, I would! Fellow Motorhead, with veins coursing with Royal Purple XPR!
The engineers that build your current vehicles have known about this for many years, but giving you that kind of fuel economy isn't in the best interests of the oil companies, politicians who are lobbied by the oil companies and the vehicle manufacturing companies. Along with planned obsolescence and cheaper materials, heavier vehicles and more expensive fuel we are screwed. It's all about the almighty $$$ and how much of our paycheck they can take!
My 79 year old boss, who I worked for 6 years ago, he told me a story of how the original Ford Falcon had a backfire "screen" on the intake manifold, under the carburetor body, so prevent the engine from backfiring and killing someone. Apparently it was a common thing, when early day mechanics would work on carbureted cars, when they would do a tune-up, they would have the ignition timing off, and the engine would load up, then backfire through the carburetor, blowing a huge fireball into the person's face, and the problem is, the mechanic would "inhale" violently as a scared reaction to the backfire, sucking the fire into their lungs and dying. This problem required a "screen" mesh to be put on the carburetor. My coworker said that the first Falcon's with this "screen" on the intake manifold, made something like 30 mpg, and so Ford immediately removed the screen, and mileage went down by about 50% - back to normal. The screen apparently caused super fine atomization, which made it burn twice as well.
The engineers that build your current vehicles have known about this for many years, but giving you that kind of fuel economy isn't in the best interests of the oil companies, politicians who are lobbied by the oil companies and the vehicle manufacturing companies. Along with planned obsolescence and cheaper materials, heavier vehicles and more expensive fuel we are screwed. It's all about the almighty $$$ and how much of our paycheck they can take!
@@puebespuebes8589A lean fuel mixture can ruin the engine. That is true. I'm not exactly sure how to tune an engine with a super lean fuel mixture. What's astonishing is that nobody is experimenting with fuel saving carburetors or any other techniques. The mechanics in the 1970's understood the fundamentals of engines in a way that has been lost. Many people figured out how to double their gas mileage back in the 1970's.
You’ve created a Hot Rod Power Tour holy grail!!! Just in time too! Those of us getting 9mpg will be thrilled when production starts! Very awesome video series man.
He should absolutely manufacture and market this. This seems like a great, relatively affordable way to at least stave off (if not prevent) the death of the V8.
I am old mechanic. I worked on cars that had wooden wheels. Young man, you are the kind of person that makes America great. We have had the tec to make 200MPG since 1938. but gas companies make money selling gas. So, NO 200 MPG allowed. Check out Charles Nelson Pogue, The Pogue dry vapor carburetor.
A friend and I did something simular,, we did it with an 88 Ford escort station wagon. The car got 66 mpg. Lawn mower jet and increases fual pressure. It atomizes the spray. Also we preheated the fual at the carb, so the temp change shocked the partials. It's really good to see someone do what we did as every one says it was bs. Thank you.
My Boy Scout leader was into pure engine oil. He had special filters so that once the oil went thru the engine it was impossible to have wear. Something about micron sizes etc. He also had a vacuums meter and would try to keep things in check to save fuel. But there were some huge hills and he did floor it, that was fun. 8 cylinders roared!
@@superchuck3259 iirc its called a "bypass oil filter" its an oil filtering system used in conjunction with the standard filter system but utilizes much smaller micron filters. Basically it adds an extra step in the filtering system basically a scrubber, without forcing all oil to go through the bypass filter (the low micron filter size causes reduction in flow which is why it cant be used as the primary filtering system)
@@User-sw8gb 1 We wrapped the fuel line around a glow plug to heat it up. 2 It was the original carberator but with a 6 inch neck on it, giving a little more time for mixing and to brake down, The fuel jet was from a lawn mower, the smallest we could find. 3 I don't know the actual fuel pressure but we replaced the original with a high pressure rated pump from a truck. Forgot to mention that we installed an air pump that worked right off the surpetine belt. I think it was a turbo jet. We had an O2 rich mix which we thought would be good if we wanted to add a second fuel jet as a "turbo boost", The car though could get up to 105, But the acceleration was nothing to talk about. The MPG testing we did was from Savanna GA to Knocks TN. We averaged 85 on the high way. That was the only time we really did a MPG measurement, From the Ride up and back. The car got totaled when my friend got T-Boned as some idiot ran a red light.
This proves the point of the comment I made on the 1st video of this series about people here on Mexico swapping big carbs on their V8's to the smaller ones that came in sedans or light duty vehicles that had the same engine, (or even from 6-cyl engines I might add). As I said in that comment, the smaller carb probably kills a few horses, but they do save up some fuel.
@@rexandexler575 I think he lost horses, after all top end will suffer more than low end. He also mentioned in the video a "controlled vacuum leak" which is just a fancy way of adding a carburator bypass. The extra air and a small carb that runs rich most of the time makes this a very efficient way of reducing horsepower in the low end, and keeping plenty of power for the top end.(maybe less than the large carb would have)
When others say add "X" to your engine and get double the mileage you know it's bs. But uncle Luke is a sceptic from the start and took what started as a joke into something practical. And explained the engineering in a way most people can understand, as always. Hats off to you sir! Thank you for the quality content and yes I'd love to see you try the carb cheater with the bigger carb as well. Keep your head on a swivel for the big oil guys though lol.
@@nathanbopp6163 It's not big oil that has a problem with EV's its the government tax systems that hate thme because they don't know how to squeeze all the same tax revenue off them yet. Reality is big oil would love to see us all drive vehicles that use half the fuel while charging us twice as much per gallon so they could sell us half the fuel they do now for twice as long into the future. The problem is the big government would lose badly on the taxes and all the other related 'fees' they skim off the system from oil well to gas station. Big oil only makes about 10 - 20 cents per gallon off things while big government gets 2 - 3x and in some states like california 5+X that off that gallon from end to end.
@@nathanbopp6163 big oil makes money off of electric. What do you think powers the mining equipment for battery metals. As well as powers the ships that traverse the oceans taking those metals to manufacturers. Big oil ain't scared at all.
@@handsonlatham7802 Yep, Big oil powers much of the generating systems they need to make EV's work. Zero problems for them on that part given how little work big oil has to do to supply fuel to those systems.
I rebuilt carburetors for a lot of years. (yeah, I'm olde) I also "RUN TESTED" my carburetors on a test engine. A mostly STOCK GM 5.7L with a performance cam, but GOOD vacuum at idle. I ran a 4 bbl manifold and built flat plate adapters for various carburetors as needed. It became a source of entertainment to run the 350 on a 4 cylinder carburetor. BUT - it DID run. I do miss those days ... We did have FUN with this stuff !
maybe u guys need to get together....and a manufacturer . We need not 24/7 crap. This can heal. People could sleep at night and be healthy. There is SOO much more here ....Think a vulcher losing grip on its' prey... wars. Destiny of humanity, still on Earth...and Earth itself! Education revisited . Yes shaking hands, our cells know when it is right........Once you take transportation obstacle out, next is new shelter., healthy food, education for all with great debates for betterment........we are talking the POWER OF TRUTH HERE!!!!!!!!!! The KEY TO RID EARTHS EVIL IS TRUTH!!!!
I saw one on TH-cam who ran a 350 chevy pickup on a home made intake box branched out to several chainsaw carbs. It idled well and would go well enough to get on the freeway, as it basically ran on vaporized fuel.
The engineers that build your current vehicles have known about this for many years, but giving you that kind of fuel economy isn't in the best interests of the oil companies, politicians who are lobbied by the oil companies and the vehicle manufacturing companies. Along with planned obsolescence and cheaper materials, heavier vehicles and more expensive fuel we are screwed. It's all about the almighty $$$ and how much of our paycheck they can take!
I just have to say, this man is like the Moses of automotive tinkering. Someone on facebook said "You can't" and this man went full rocket science, made it work like a dream, and then pulled out receipts.
@@omegarugal9283 Or people that understand the basic principles of physics.... and no better fuel atomization doesnt quadruple your fuel economy... the tiniest, carb, with all the bends you'd ever imagine won't give better atomization than direct fuel injection.... and this motor with that still wouldn't see a 4x increase in fuel economy.
@@omegarugal9283 your getting 40+ mpg out of a 3500 pound car with the aerodynamics of a brick .... Then you should clearly go make millions as the head engineer for a car company! Your clearly the smartest of them all.
I've been a Ford dealer tech for almost 30 years. I've heard stories that a properly set up VV carb is the closest thing to fuel injection, without actually having it. VV carbs are somewhat dynamic in their operation, but work differently from your set up. I also don't think you'd get anywhere near the fuel economy that you're getting. It is impressive.
His is more akin to port injection with an idle air control valve. He may not know it but his tuning is very well done for mpg efficiency. He is essentially running on gas fumes but can dynamically rev it high for more power(and lost of gas). I doubt he will get much for speed but noone needs a fast af car. His system is very seamless when it switches from fuel efficiency and more power. 40 mpg is very possible on most V8s.
Ford-Europe actuallly used VV-carbs on the Taunus/Cortina 1.6L OHC Pinto engine. (my 1980-1982) If you ran the car gently it would get pretty good mileage. Better then with the older conventional carb.
@@acters124 it’s running rich until he opens a secondary fresh air valve to get the proper ratio mixture (controlled vacuum leak). Watch the series on this build and he explains.
Great job!! In the 1980s, before EFI became commonplace… Most major manufacturers had electronic carburetors of some type or another, that used a pulse-width modulated fuel mixture control needle, versus your PWM air bleed concept. This has been fantastic to follow along with!
They always had issues with electronic feedback carbs back then too. Everything in the carb and on the engine with it's mounds of vacuum operated emissions system had to be working correctly for the MC solenoid to function correctly. There was always issues when they came into the dealership to get worked on. Fuel injection came out and made things simpler and easier to work on.
This is one of the most informing, entertaining, and innovative car videos I’ve seen in years!!! You are great on camera, I love your humor, and you are thorough in your explanations! Good to see another Iowa guy pushing the limits and stepping outside of the boundaries! -JR Kingsley IA
@@ThunderHead289 I’ve recently watched a bunch of your content, and not only am I very impressed with your lawn mower carb testing, but also your electronic monitoring system overall! It’s super rad! Love your old ford farm truck as well. Wish the prices were what they were when you got it. Finding one worth buying for what they’re asking in NW Iowa is tragically overpriced. Thanks for all the content you put out it really is great stuff!
I would love to see a long term mpg test. At least 200 miles. Taking it on power tour would be epic. I would love seeing a few more videos on this setup.
We would have to have a controlled experiment with multiple participant vehicles to see if we can eliminate variables and figure out if this really works. THAT WOULD BE COOL!!!
This is just the type of work that actually makes TH-cam suck less. Wonderful work and insight into the issue at hand. Your controlled vacuum leak observation is a great fundamental solution to the problem. Is it just as simple as the atomization? It may be.
Carburetors engines are most efficient at wide open throttle. The economy gain is largely from eliminating intake runner vacuum caused by the throttle butterfly blocking airflow. In small aircraft we often cruise using wide open throttle and control engine rpm with engine load by adjusting the propeller pitch. Selecting a carb that is going to operate at near max throttle during normal operation was one half of the success. The carb cheater is the genius second half of the equation. You will see less gains when you use a carb that isn't so close to max flow during normal use.
Wide open throttle on the carb does not mean zero manifold vacuum. The venturi on this carb is so small, that even WOT will be in a vacuum at anything above idle.
@AmericanLocomotive1 I guess you didn't brain the part where he's talking about sizing the carb for application not saying it applies to any sized carb on any sized motor.
Holy moly 😲 this is incredible! I recently got an 1989 Ford F-150 300 straight 6 and 40 mpg sounds like a dream! I might have to learn some engineering/mechanics... just wow! Awesome stuff.
@@blipco5 He meant 4 cylinder engine, not 4 spd transmission. Needs to find something like a SVO Mustang engine and do a full build on it with all the cool parts.
You need to burn more gas to get an accurate mpg reading. Drive highway until you're less than 1/4 tank and calculate based on the odometer/trip meter and gas to refill. Repeat in city driving conditions (if such a situation even exists in Iowa lol). I would also be interested to see dyno numbers compares to the 4 barrel, just out of curiosity. Great video series, very interesting!
Just drive it around for a couple weeks.keep track of your numbers. It would be realistic mpg. Most of us don't ever see true mpg.. because of our foot and driving habbits.
do like mythbusters, put in a fuel cell, measure out the fuel before and after under different driving conditions, will give more accurate results. Looks good so far though!
Thanks for sharing your creation. Yes, you are correct in your hypothesis why it's getting better mileage. The greater the vacuum, the more the fuel will evaporate or atomize, and the better it will burn, giving the same power with less waste. Well done!
That's like saying a car will get better gas mileage with a dirty air filter -- lots of vacuum then; so why does it get less mileage with a dirty air cleaner?
@@TimK-1971 I wouldn't believe everything I see on TH-cam. Especially claims where someone more than doubles the gas mileage of a motor vehicle. Isn't it strange that auto makers never figured it out to use lawn mower carbs on their engines.
That torque strap chain brings back fond memories of drag racing when I was in high school in the mid 1970s. It took me several cracked windshields and a couple of transmission cases before I figured out how to control some of the chassis twist.
That's amazing! In all honesty I didn't think the gas mileage would be so good I figured MAYBE 25, 30 but definitely not 41mpg congrats, you honestly deserve a the proper recognition for what you have accomplished, my hats off to you!!
Cool. Brings me back to my 4door 302 Comet. Was "Grandma's Car" and her grandson didn't want a 4 door. What a fun ride for $300. It had 34k on it. My ex took it to college and I never saw it again. At least one of us got a deer that season.😊
Don’t be surprised. Your right about the vaporization of the carburetor but a big difference is the leaner mixture due to your controller. In my twenties I took a Fiero Gt 2.8. bored and stroked to a 3.2 with some performance enhancements and balancing. 30 mpg then added a potentiometer to the O2 sensor to fool the ECM, giving me control to lean the mixture. bumped mileage up to 38 mpg without any precision monitoring system. Didn’t lean up too much because that would burn out the catalytic converter and over heat the engine. So in hindsight I learned from my advanced engineer dad , who created the PCV valve , that Catalytic converters require unburnt full to operate. That means our modern cars with multiple CATs waste fuel so the Cats can absorb non combusted fumes so they too can burn and glow at the right temp for the catalytic process to occur .
This is great! My dad used to fit smaller carbs to bigger engines as well, but he's theory was that it would restrict the fuel supply, I think your theory on atomization is more plausible.
The most common mistake that was made on kids cars when I was a teen is using too large a carburetor. Most contests we had were light to light and torque won out every time. Sure, you could build a 301(3" stroke 4" bore), spin it to 8000rpm, if you balanced it well and used white pump gas, but even a 625 CFM carb was a little much. Any time you are blowing out black smoke, that is unburned fuel.
It would be interesting to see how much power the mower carb could put down. If it's anything decent you better watch out. The oil and industry hit men are coming for ya!
At this point they might welcome this actually. They got much bigger problems coming up with electric cars, not to mention the government wanting to ban gas cars all together and force everyone on electric, hell they announced in CA that no more gas cars can be sold there after 2035 I believe. My suspicion is that this also substantially cuts down on emissions as well which would please our commie government. Ironically the one thing they were against, suppressed and silenced at one point may now be the only thing that can save them.
@@johnmurraycompton569 The chip shortage isn't really for EFI but like everything else around it. Motorcycles with EFI have returned back to normal prices because the tech needed to run just a engine is really basic
Politicians talk a good game, but they don’t actually want people getting good mileage. The geo metro got 50 mpg in town, I had one I know. Why couldn’t they have improved upon that instead of burying it?
I had a 74 Ford Maverick with a 302 automatic back in the early 80's. Loved that 302. My Dad and I were always working on cars in the yard. This carb trick would've been something I would've tried back then if I thought of it. I enjoyed this series of vids. Thanks!
When I was growing up (60’s & 70’s) a Plymouth/Dodge dealer I knew REALLY well, friend, and he worked on our cars. He had a new vehicle come in that a customer ordered. Back then you needed tune ups and when he came in for a tune, he asked customer how was his gas mileage. Customer said it’s the best car he ever had for MPG averaging about 30-31 mpg. It had a 318 ci motor in it. When our friend opened the hood to look over he said he NEVER seen a carburetor like it. (Also back in the day, mechanics had tests or shows for competition, our friend placed 1st in state), anyway, our friend did a tune on it and customer averaged about 32-33 mpg. He called Plymouth technical department about it. Longer story short, Plymouth wanted that carb back which he removed and put shell we say ‘correct’ carb on. Customers mpg dropped back to about normal for the day, about 20-21. He wished till the day he died he would have never called tech department and just kept the carb, figured it out, then start producing them. I will till the day I pass believe government, large manufacturing etc etc are in bed together. Sorry for long story and side track, but I believe we, people, us, will NEVER SEE A CURE for cancer!!!!! WHY??? Think deeply, VERY DEEPLY, on the economic side if they did find cure!!!!!! Hospitals, treatment centers, drugs, special doctors, etc etc etc etc, anything that has to do with treatment, would not be needed!!!! Don’t believe ME??? Just think of the last four years about Covid and how the government and drug companies shoved it down our throats!!!!!! Yes, my best friend died of it, but, it was NEVER EVER EVER as bad as they said it could & would be!! Sorry for side track, I vented for the day, have a great day everyone!!!
"Yes, my best friend died of it, but, it was NEVER EVER EVER as bad as they said it could & would be!! " See also: Cognitive dissonance. Still, it really wasn't as bad as they initially thought - mainly because they didn't realize how many asymptomatic cases there were to bring down the death average. That said, it still racked up ~10x the death tool of the worst flu year of the last 20 years in the USA. Anyway, about the carb: Funny how many people all seem to know someone that had some special prototype carb that was secreted away back to the manufacturer. Funnier still that they all mirror the same urban legend that ended up so popular it has its own entry on Snopes.
@@BigTony_Garage engines that run on water... Steam engines come to mind. Very efficient. Check some out on Jay Leno's garage on TH-cam. He drives them through town and on the freeway. I know that's not what you were talking about. You were thinking of a hydrogen powered engine.
More of this please! I’d love making a V8 land yacht from the 70’s/80’s have ridiculous fuel economy like this. Dad was a mechanic, I know very little of that stuff. He drank way too much
My dad was a mechanic that also drank a lot .having 5 kids and a tuff upbringing didn’t help matters.I have a 1963 buick electra sports coupe and a 99 suburban I could use this set up on both of them
I recently bought a 1976 F350 with a 302 Cleveland. Now, I knew what I was getting myself into, but I always had the overarching feeling of "yeah, this ain't ever gonna be a daily driver, more like once in a fortnight. The fuel price is gonna be crazy". Now, after watching this series and actually seeing that options are available, adjustments that are not excessive can actually be made, and making it a somewhat reasonable vehicle to drive isn't nearly as impossible as it once seemed; its just about working using logic and information that is readily, and adjusting to what the conditions allow. This video was an eye-opener for me, so thanks a bunch, and I can't wait for the continuation of the series!
302 was a Windsor and the closest to a 302 Cleveland they made in the USA was the Boss 302 which was a 302 Windsor with Cleveland heads on it but they are rare.
Hey Luke. The next major question would logically be what is the cost for the little electronic unit and metering box setup? If it will take a vehicle doing an average of 25mpg to over 40mpg, that is an extra 150 miles in a 10 gallon tank, mate. That's nothing to sneeze at - and certainly a veritable Hail Mary for all the blokes out there with V8s that just want to use them as everyday runners. I'd be interested to see the results of you running the Maverick to work and back for a week - you know, including the typical daily running stuff, trips to the store etc - and see how it does. Sure, getting the electronics to work with a Holley 390 is one thing, but when she's doing so well on the lawnmower carb, why not keep going and see what happens? Then maybe run it for a couple of hundred miles WITHOUT the electronic metering unit and see whether there is still some form of savings for running a lawnmower carb on a V8....or if it definitely needs that electronic wizardry to make it do its thing. Another thought - how well did it accelerate? Was it notably down on power from the usual carb you run on it when using the lawnmower carb?
@@FroztiProductions Efficiency is a measure of how well that power would be employed in the first place, My concern would be potentially high RPM flow efficiency, but at lower speed it wouldn't really matter about power. More important to V8's is the low-mid torque curve, if that engine still maintains most of it's low end torque, then higher economy doesn't mean slower per say. You both have valid points, but only long term testing of application would quantify the answer, most likely this is not the final iteration of this setup.
@@colesoucey5511 No gas conventional engine will be close to 100% fuel burn But this is pretty cool how he is using some homemade electronics to regulate the the vacuum to adjust fuel mix.
@@gitfindasettahpanzy9892 The term "fuel efficiency" is open ended. Efficiently consuming fuel to do what? Travel further or faster? Drive slow, use less fuel. Make less power, use less fuel. Of course a poorly designed engine can use excessive fuel AND make little power which is what I expected this experiment to result in honestly. I'd like to see an AFR reading.
My God. If someone would have told me that having a screwdriver keeping your glovebox closed looks cool I’d think they’re crazy. On this car it just looks part of it! Awesome
When I bought a used 1971 duster in the eighties upon lifting the hood I discovered that unaware of the chain repair they had trimmed half of the fan blades off to avoid contact with the hood due to a broken motor mount so after I fixed it temporarily with a chain I still had to get a fan .this was to be only the beginning of the trauma as I went about restoring this car .only to have a truck total it as it neared completion probably a good thing as I would have probably drove to fast and wrecked it eventually anyway!
@@grayharker6271 thanks for the reply I'm not that old early 60s but you know what I miss about old american steel you could buy a car like the duster I mentioned over 100000 miles on it for a hundred dollars and drive it off it might not run or handle great but between your friends and such you could diagnose repair and drive it no computer hassles easy to get parts I miss the good old days
I did the same thing on my '76 F250 inline 6. It rotated too far once and broke the fuel line spraying gas all over the engine which of course burst into flames. I was two blocks from home so I ran, got an extinguisher and ran back thinking it would be a total loss. Put out the fire and after it cooled down I inspected the damage.....one burnt sparkplug wire! After that I chained her down.
@@charleshultquist9233 I've had so many similar incidents that heres a confession my nieghbor was working on an amx distributor the point variety very low hood and somthing told me to tell him to make sure the ignition was off but I didnt.and as expected he started messing around with the feeler gauge I'm watching out my window and then as I knew what was next the double whammy first the shock and then the withdrawal impact with the hood .at the time I guess I got somthing out of it watching it happen to someone else now I'm kind of maybe a little bit sorry anyways sorry to dump my confession on you thanks for the chat anyways
I love this content. I always thought there wasn't much engineering you could do to improve an old carburated engine but clearly I was wrong. You are awesome!
it would be great to see a comparison video for the max fuel range from 1 tank of gas from completely full to empty between the lawn mower carb and the 390 carb. I've got a dodge 440 engine I would love to try this on hilariously awesome stuff and the numbers blew me away
If that maverick was mine....I would NOT touch that set up....leave it as is and get a new tinkerer car. Some folks might want to look at it....or buy it. Again, run that thing 100 or 150 miles(with tools:)) and verify performance. Prolly having a manual helps too...less loss than an auto.
I just found your channel in March 2024. The V8 is a good candidate as it has sufficient torque along with the steep 2.79 gears to shuffle the car along with the swirl and vaporization you speculate on. Now, add a second mower carb with a progressive linkage system that won't allow it to open until the first carb is wide open, along with your mixture leaning device adding more air only when needed you may hit the sweet spot of cruising range and the ability to have power for long grades or mountainous driving. Best regards.
Maybe for another episode you could drive it for a week and then calculate your fuel mileage from average driving scenarios after it has used more fuel. Or take a longer trip, maybe 100 miles round-trip.
This is amazing Luke. I bet you could patent your intake plenum and there would be a substantial market demand to put this in production. This is the first time I've seen a legitimate system for getting significantly better mileage as well as drivability. Well done, it's good to see someone who can work with their hands and use their brain. 👌
According to Joerge Sprave from the Slingshot Channel, it's considered "prior art" legally once you post it up online like here on TH-cam or other social media, so not likely he can patent it at this point. Also according to Joerge, who happens to be a retired patent attorney, this is often better for a small time manufacturer, because having the design in the public domain protects you from having to litigate patent issues in the future. It does open you up to have your design stolen, but it basically protects a patent troll from swooping in and suing you for a design that they later patent. This came up in regards to videos on Joerge's repeating bow design, which I would highly recommend checking that video series out. Really cool tech he came up with and I learned a lot about IP law in the process.
I am not a lawyer, but the info from Mr. Sprave that you quote really needs to be verified. I would strongly recommend that Luke look into patenting this, if only to prevent trouble later from patent trolls as you mention. Also, this would make a great article in a DIY magazine such as Popular Mechanics. I hope they consider it.
@@greatwatermeloninthesky7642 I agree, Luke needs to patent this yesterday. This WILL get stolen and someone WILL profit from his marvelous ideas and engineering.
What a great channel. Our best man back in the 70's owned a blue '73 Maverick (aka Blue Devil) with the inline 6. He added headers and high flow exhaust - made that car run like a scalded dog.
41 mog while rounding up and spilling out a little bit. Honestly I wouldn't be surprised if you truly got 50+mpg. I would love if you could find some time to have it dyno tested. Also, you should start printing out hundreds if not thousands of those carb adapters. I want one.
Yes! My dad and I have said for years that the oil companies have had their hand in the pot when it comes to engineering and people don't want to believe it. Here's a really easy simple proven example. A V8 that gets 41 mpg...🤔🤯
Yes u could mass produce these. Do the adapter with the carb pre set up n it could make you some big money. I would do it. N I know many others who would too. Especially w the current gas prices
Wow!I believe you're correct about the atomizing of the mix,it surely does more than my expectations, as far as the overall drivability. I've never had the financial ability to do many of my ideas, and I'm glad to see someone with likewise understanding to finally accomplish a very worthwhile endeaver.MY HATS OFF TO YOU BUDDY!
Well his viewers that have watched many videos know he isn't "pulling our leg" some random person could happen across and be like "this is fake, I'm reporting this"
You'd be surprised in today's environment. You can show absolute facts and truth in something and a bunch of these window lickers out there will still dismiss it as flat out lies.
I bought a Ford Focus the first model year. One of my learnings from this mistake was that when a small hose at the back of the motor developed a leak fuel economy went from close to 31 to about 49. Acceleration was non-existent. It actually lost power if you stood on the gas. I planned to install a manual valve in this line but after the 5th potentially lethal recall I ditched the lemon instead.
I think you questioned how this would do with the 390 Carb. That's exactly what I wondered. Seems like you would need to limit the amount of air allowed through the IAC Valve so the secondaries would still work, assuming it's a 4160, or integrate a throttle position sensor. I would imagine you could get some great results while the car is running on the primaries. Creates some interesting problems to solve. You have me very intrigued by this whole experiment. Guess we're getting close to the feedback carburetors of the 80's when taking it to this next step. It's been fun to follow these videos.
Great job man I thoroughly enjoyed this and who knows about telling people bout it we all know the whole MPG dealio like pretty much a lot of things in this world are not to their full potential and kept there for a reason. We love it here man
This is just insane to watch. Youre onto something groundbreaking, please continue for everyones benefits. Innovative and inspirational. Great job, cant wait to see more
When you think about it, it makes perfect sense. Back in the late '40s and early '50s, there were plenty of v8s running around in the high 200 cubic inch range which had one barrel carburetors on them. These engines in big land yacht cars and pickup trucks with no overdrive and low gears where getting 20+MPG or somewhere in that neighborhood, with no dynamic tuning.
My '69 Catalina with the 400 V8 2BBL, 2.73 rear & 3-speed auto got near 15...with the carb way out of tune! After getting that Rochester 2 Jet back up to spec, it's getting at least 19 now. That's not bad at all considering it's a tad over 4,000 lbs. Pre-Malaise era cars weren't the horrible gas hogs people nowadays make them out to be (when they're tuned right)
Old motor head here. Just found ur channel...GREAT STUFF!!! Screw the haters. Back when I was building and racing late models I did modes that guys in the pits would whisper "he's a wack-o thinking it'll make a difference." But I only ran motors that came out of the junkyards...small block 4-bolts out of junked pickups. With the tweeks I did, e.g. jetting the carb differently on the left v right because of a slight difference in centrifugal force ( running oval track, as they joke, go fast...turn left ). Haters will hate...it seems to be their call in life: don't ever do anything, just hate on anything that anyone else does. Best to u my friend...I'll be watching.
the average beer-head is run down they want to reduce everyone to their level. come to think of it - actually it is the average person. " when a pick-pocket meets a saint , all he sees is his pockets. "
Haters might just hate, but gullible people will swallow an unbelievable level of bullshit and believe it's true. If you raced, then you know you can either use gas and make power or not use gas and not make power. The carb doesn't have anything to do with the energy content of the gasoline. All racers are whack-o's. That doesn't really matter. Did you win races? Then we find out if you're whack-o, but clever.
This is about fuel economy not speed. You won't be winning any race when you are trying to save fuel. Most people say bull haven't even tried it first to prove their point so the bull people are full of it . I want the see it don't work I seen many that do work. Right now does work won. 73
The engineers that build your current vehicles have known about this for many years, but giving you that kind of fuel economy isn't in the best interests of the oil companies, politicians who are lobbied by the oil companies and the vehicle manufacturing companies. Along with planned obsolescence and cheaper materials, heavier vehicles and more expensive fuel we are screwed. It's all about the almighty $$$ and how much of our paycheck they can take!
@@ThunderHead289 You gave several valid reasons for good mileage and I have another, remember that you advanced the timing "all around." That should help mileage and at least some of that advance should be possible with a larger carb, tuned to coordinate. BUT I don't believe you got 41 mpgs for a second!! 35 miles was nowhere near enough to compensate for possible changes in the angle of the car while filling or fuel tank venting issues that might leave an air bubble in the tank (I have had several mud daubers in fuel tank vents). I think you can see why I am a big fan of spread bore and 3 barrel carburetors, though the only 3 barrel I ever saw, on UTG, had a huge, combined secondary rather than a single little primary and 2 big secondaries as I would like. I am looking forward to see if you can find a way to bring back some performance without losing the mileage, hopefully in a way that I can use to up my mileage on my Lean Burn W150 with 225 slant 6 and 1 barrel, or use when I restore my 318, 2 barrel, 1978 surfer van. In both cases I would love to reach 20 mpgs while pulling a trailer at 55.
This is amazing, I love it! You're 100% correct about the fuel atomization too. The smaller carb is greatly increasing the air velocity which in turn increases the turbulence, which atomizes the fuel better. The only downside I can see is your horsepower cap based on the intake restriction from the small carb, but I'm sure you knew this would be the case. Personally I'd like to see you try this on a late 90's 4 cyl car, like a Civic or a Cavalier. Cheap to buy used with light, more aerodynamic bodies. Ditch the FI, swap in a small carb, and test/tune. Wanna bet you'd pass a Prius for MPG's?
THEY made sure carbs were taken out of the equation for more than one nefarious agenda one of which was making sure there is an ecu on everything we have. Carbs have a lot going for them where here in Japan we still have 1996 carbed daihatsu Kei mini van that gets 56mpg vs the latest high tech daihatsu, suzuki and honda mini vans which only get 40mpg and match 56mpg with latest stop start no idle technology.
@@altruismfirst6489 I'm not entirely sure about this statement. "THEY had a nefarious agenda to make sure all cars have ECUs"... So, is there something wrong with EFI? I mean, there's also mechanical injection as well completely without any digital modulation, and even mechanical injection ports have proven to provide a noticable increase in thermal efficiency. I do admire something about the carb communities: It's dirt simple, cheap and easy. Just very far from efficient.
@@bluspectre2042 it's like 15% or less efficient, if you dyno tune a carb it can be brought into the single digits. what can go wrong with efi? 8+ sensors, high pressure pump (in the freakin gas tank), plugged injectors, ecu, fuel filter (under the freakin car on most) catalytic converters. what can go wrong with carburation? fuel pump (front of engine 20 min fix) fuel filter (next to carb 10 min fix). not to mention the price to replace those parts.....So yeah there's a very good reason to be pro carb.
I used a Gm Carb on a Dodge 360 avg 26 Mpg. Getting 6 to 7 Mpg better then factory back in 1990.My theory was less CFM,s and smoother idle and better vacuum .Didn,t have as much power and didn,t care.Great Job never thought i,d see the day when a Ford 302 would sound so good.Thanks for sharing.
Awesome Luke! Beware of "big brother" contacting you wanting to purchase your design to supposedly "market" it when their intentions would be to shelve it to prevent the public from getting hold of this. I have heard of this happening decades ago! Great job!!
Exactly. Theres no way big oil would allow these innovations to reach market. Theyve been suppressing automotive inventions for decades. Sadly, the O.p. should be careful of how much attention this gets.
@@GabeHelma I don't know which rock you two have been living under, but fuel injection has been industry standard for nearly three decades. Furthermore oil companies have been throwing billions behind wind, solar, and electric vehicles since 2013 first as a tax break and now as an investment.
@@Jixijenga yeah because we all know the "modern" computerized v8... or even 4 cylinder... engines on cars today that are half the weight of this one, are all getting 40 mpg *minimum*. They have to be right? Since an old 40 year old car with an obsolete design carb engine can do 40 mpg, these new latest and greatest advanced technology wonders on wheels with their electronically controlled fully computerized engines and every "pollution control" in existence. Plus adding ethanol to the fuel which must give a better mpg since its made from corn that could have been farmland used to produce corn or other crops for food instead of ethanol, especially being that ethanol takes more energy to make than it produces. So 40mpg surely must be their bare minimum efficiency for todays vehicles. None of that stuff is to keep people relying on, and tied to, energy sources that only the gov and their companies have complete and total control over.... just like the food supply and everything else today.
@@Yhrim70 I'll be honest, I don't know what the hell you're talking about because I didn't read past the first eleven words. That's all I needed to know that it had jack shit to do with what *I* was talking about. Nobody is going to come after this guy for tinkering with an old 302 and a lawnmower carburetor because the world has moved on once already and is in the process, right now, of doing it again.
This is some old-school stuff he's doing. People started playing with this same principle back in the 70's and 80's, using motorcycle and small industrial engine carbs that could be easily tuned with simple screw adjustments and jet swaps, when emission compliance came out and vehicle fuel milage and power tanked for it.
Yeah, I wanna see how this setup would work on a big block, big car, cruiser - something where you're not really worried about HP, torque, or speed. I think that's where this would prove the _most_ practical. Imagine something like an old Continental getting something like...30 MPG. That would be insane, especially with their normal capacity.
Dude, your project made you the coolest person on the internet this week. Love the concept-could solve a lot of problems in low cost engines like generators, lawnmowers etc because no high pressure pump is needed etc. You likely wouldn't need a battery on these small motors - motocross bikes use EFI powered by Capacitors now that fire on the second kick so running a few PICs to control an air valve should be a piece of cake. I'm sure that it would take some refinement to become commercially viable, but I think there is a place for this.
It's not just controlling an air valve though, you need the oxygen sensor and all the signal processing that it needs to tie everything together for really accurate mixture control, though it could run open loop with less accuracy. It's not a new concept, there was a fair bit of interest in controlled air bleed carb designs back in the early days of EFI e.g. look at US patent 4320731 from Ford.
Man, watchin this whole thing evolve throughout this series has been pretty kool. I know you said this was intended to be a joke. But it seems to me that there are a ton of practical applications for this tech. and possibly a huge market for it. Great content man.
@@masonthompson4363 ...There have been plenty of fuel injection kits for older cars. They just had max performance as their design objective. If they incorporated a small throttle valve with a larger secondary, they could maintain air velocity similar to this, but with reserve power (V8 power) This carb simply removes the users choice to use the V8's potential. That sounds a lot like wearing running shoes while wading in three feet of water. You won't be running.
It would make for a nice addition to my gen-set, a riding mower, snow blower, etc. Those machines have the politicians eye atm, so I don't expect that gas versions will be available much longer, or cheap fuel for them for that matter. Maybe it was a good idea twenty years ago.
Those string alignments are sometimes far more accurate than the laser alignments from shops. I have had a shop give me my car back with one rear wheel being at +1* Camber and the other at -1.4* lmao. Safe to say I never went back to that shop, and shortly thereafter, they went out of business! You want something done right, sometimes you gotta do it yourself!
This reminds me of my truck, it's a 1981 Chevy K10 stepside. It was my stepfathers truck then he passed and I inherited it. It was the first vehicle that I drove on the day I got my license at 16. It had an inline 6 with an Edelbrock intake, split headers and a 1 barrel carb. I could put $5 in the tank (gas was $.99/gal then) and drive around all day. I never checked the mileage though. Now it has a 350 with a 650 DP on 35's and get's terrible mileage. It runs great though! It does make you wonder with all of the tech on vehicles these days that we're not getting 50+ mpg now. Most, if not all, engines are direct injected with variable intake and exhaust cams as well as computer controlled timing. Most also have variable controlled intake runners. Many vehicles have had this tech for a couple of decades now. Kind of leads one down a conspiracy type of road!
Cars are significantly heavier than they were “back in the day”. Pretty much every advancement in engine efficiency and aero gets eaten up by the extra weight for safety systems, power draw for the accessories, but the biggest factor is engines being tuned for power versus efficiency. If required by regulators, the manufacturers could absolutely retune their engines and trade some power for better economy, but most people would rather have a higher horsepower number they never use than a higher MPG number they use every day.
@@mrb692 Yep, if people still knew how to drive we could do away with a lot of the added safety features. These days we need devices to help keep us in our own lane and hit the brakes for us, because we are too preoccupied to actually pay attention to the road. I miss the old days. But yes, cars are much heavier these days. Gov't tells auto makers to add a dozen airbags, tpms systems, backup cameras etc. Also Gov't - your car has to get better mph also.
@@mrb692 thisss. I can totally tell by how semi trucks drink. We have at work some volvo trucks. A "21 460, "21 500, and "22 500. Now from 21 to 22 they added more power down low but it has the same peak. The engine underneath is the same, its the turbo and the max boost that differs. Now the 460 drinks 26L/100k, the older 500 drinks 29L/100k and the newer 500 with more down low power drinks 31L/100k. Also we had some rented dafs. A 440 2 axle that drink 18L/100k, a 470 3 axle that drink 26L/100km and a 530 that drink 30L/100km. Now as you said weight went up, size went up, tyre size also went up and we seem to be ignoring that. But just because we're making that power more efficiently we're making loads more of it and we're using a lot more power to drive. Back in the early 2000 you had Opel corsa with 50hp, now you have Ford fiesta with 200 and golf with 300.
Research "high mileage carburetors" , designs have existed for decades, usually the patent gets purchased by a big gas or oil company, then it gets put on a shelf and is never discussed publicly.
Wow, that is amazing and Soooo believable. I've heard to many stories of carbs that gave cars wicked gas mileage. It's possible that the velocity of the air coming through that small intake is so violent from the 8 cylinders sucking it through that it's atomizing the gas so well that it is burning more completely. VERY AWESOME. Oh, and you ROCK at this. :)
thats an interesting theory. you're talking alot of negative pressure due the volume of air that the engine is trying to pull through the carb, combined with alot of velocity. boiling points get LOWER with decreases in pressure.
Still gotta remember that the air is not being 'sucked' or pulled thru, but rather it's being *pushed* thru by atmospheric pressure limited to around 14 psi.
It all depends on how it is tuned, some want max power, others want drivability... some want a mix of both. For highway driving, you don't need max power, once at speed you only use a small portion of the available.
The carburetor is a mechanical fluid dynamics computer that can solve third order partial differential equations with very few moving parts. All the atmospheric variables are condensed into air pressure, which changes the velocity of the air passing through the venturi. This air velocity acts as a pressure differential measurement, and the pressure differential is what meters the fuel. It is a pseudo-closed loop control system, as the fuel metering changes based on intake plenum pressure, which changes based on RPM and throttle position. I love carburetors. I have a couple of spare carbs and distributors just in case SHTF. The addition of the controlled vacuum leak modulated by wideband O2 is absolutely genius. The elegant solution is almost always the right one, and your O2 system proves this.
Great idea. I think that motor just loved the carb/design combo you made. 41 mpg especially these days is well worth it, and doing it in 50 year old car
@@TheComingCurse999 Its affecting it a lot, otherwise he'd be burning way too rich running down the road. At least he can modulate the AFR on it to optimize the most fuel economic scenario on the highway. Without it I'm sure we'd all see very poor fuel economy since it would be burning more fuel
The original VW Beetle (from the 1930's) got 38 mpg. Between that and this you can't convince me that the automotive & oil industries aren't deliberately screwing us.
They are screwing us. Oil doesnt come from dinosaurs. Its natirally created in the earth and theres endless supplies of it. There was a guy in the 70s that figured this out and the government wanted the patent but he wouldnt sell it so they murdered him. Big oil is the same as big pharma.
Reminds me of a Ford Fairmont my dad had years ago with the 2.3 L carbureted four-cylinder with a five speed manual. It also got around 40 miles per gallon. That was all while meeting emissions standards and delivering power that was adequate for the time in a midsize car. Still, a great project with clever use of modern close looped devices. Would be a good project for someone on the flats such as yourself who wants to turn an old piece of American iron into a fuel economy champ
This was an awesome and well-executed experiment, and proof of concept. As with any good experiment, let's examine the liabilities. Lack of power (to what degree, I guess we don't really know yet), and... what? A natural tendency to self-enrich as your foot gets further in. Is there a point where the control circuitry can no longer sufficiently compensate? It kinda feels like this is the beginnings of the spread-bore carburetor- small primaries for cruise efficiency, and big secondaries for when you encounter a tunnel... lol
lets go best of both ideas here. Briggs and strattion makes a duel venturie carburator for their vanguard series V-twins. its about double the size of what is currently installed on this 302. So even lets say you cut the milage in half thats 20+ Mpg MINIMUM. and probably double the HP. I have a 83 deville i dropped a 305 chevy engine in... time for some more experiments of my own.
I love projects like this. Im a tinker with everything type of guy and I think you hit the nail on the head when you did the white board presentation. I was thinking the exact same thing before you even said it. Good job!
Would be really interesting to get airflow measurements at the same speed with the four barrel vs the lawn mower carb. It would give a nice comparison on the actual airflow through the engine.
Many years ago I put a very small carb on a YamahaYZ490. It got very good mileage and made really good, useable power on the trail. My friends couldn’t believe it. Just shows that bigger isn’t always better.
Great idea and follow thru! I've always like the air leak tuning idea, just never tried it. Use it on a 4 barrel next, just to get stoic. 3d print a 4 barrel intake with a side lawn mower carb for the highway.
@@markm0000 lol you can do the same thing with a efi and no need for all these stupid contraption You could run as lean as you want with efi and a xouple of key stoke on a keyboard bjt it atil the dumbest idea evwn you cgonna end up with a blown engine
@@hojnikb Not exact. The real secret of such economy is that carb passing to engine much less air then it able to use and so need much less fuel. So it's a virtually 1.0-1.5 litre engine by air consumption with the same power - less then 100bhp. Pumping loses is not such big because it compensating on compression stroke (the only 1/4 or so of cyl volume is used - all other is constant vacuum).
My daily ride is an old 2007 Toyota Corolla , small 4 cylinders 1.8 liters engine . 4 speed automatic transmission. I can’t get more than 33 miles per gallon in the highway and much much less city only . You’re doing miracles there man, carry on
Great video and good explanations. Im an old-school carb guy. I rebuild them and adjust them all the time. The real magic is that its limited cfm limited your acceleration and the faster airflow did atomize better. Great job and very well done with the 3d printed. Genius using a controlled vacuum leak to maintain stoicometric.
Already very reasonably good! Imagine the driveability with a 6 speed trans and a better rear ratio, maybe a 3:23 to 1 instead of the 2:79's! I know, I know, you did this really inexpensively. Just thinking about the possibilities. Good job tuning this and making it work like a regular everyday car!
Hahahahahhaaaaaa. You try to justify lugging that monster cast iron block around, choked with a twine string, with fantasies of adding MORE weight and a LOWER gear? I want you on the first mission to Mars. The ONLY two LOGICAL choices are to place an engine in the car SIZED to the carb OR place two more on that intake and be ABLE to use the POTENTIAL of the engine when NEEDED. I think you should refrain from being so EXCITED until you have a BASIC knowledge of physics and how they relate to the automobile. No more this! or that! until you ask the right ???
@@CreeperOnYourHouse depends on the TQ curve, its most efficient to drive a peak TQ, having a long overdrive cant drop you under that peak and out of the most efficient zone, he already only doing 2500 at 75. Diesels can do 1800 at 70/75 but there peak TQ is lower in the rev range,
This is pretty crazy. Maybe you could hit 50 by making some additional changes. A little upsetting when you are outdoing most 4 cylinders out there on mileage, although I'm not guessing the 0-60 is too hot. Although this project was kinda done out of spite, it's been pretty fascinating to see how well it's turned out. Goes to show that no idea is necessarily too ridiculous to try >>;=)
Why would he do this to prove that he is full of shit and this contraptions doesn't work in reality All a see is a bunch of gullible people in the comment
@@wildone1312 lol you are the reason why lol People really do believe anything that on the internet lol If your so confident this work try it for yourself and make a video on how awesome this work
This, this is mind blowing. I'm wondering how well it would do in city driving. Considering how efficiently your setup works I'd think that number would be equally mind blowing. Talk to a patent attorney, today. Seriously. You are in the realm of GDI destroying tech for MPG.
Yah patent it and no one will get it after Mr. Elite buys you out after threating your life. Give it away and finally everyone will be free. Open source it the way to go. Vaporization has been around and their patented, and no one has one. Why?
By itself, this video is out of context -
This video answers all of your lawn mower carb questions: th-cam.com/video/gmPtCmL-Ldw/w-d-xo.htmlsi=ZXmfEXXmKuxU79Lr
there was a guy who did this in the past and it didn't end well for him... he added some electric part to atomize the fuel as well and claimed to get even more MPG, be careful
@@VenturaITfunny you posted this just now and my buddy was just talking about this the other day. As well as this guy's last post appears to be from over a year ago... 😮
Wow, I been working on getting a 66 to 69 Ford Bronco, Would you be will to convert for me if I come to you? I am in East Texas.
No ,Stay Safe
Similar to the Usher vaccum chamber.
This simply proves the technology for great fuel milage has always been there...no money in it for oil companies/ politicians.
Yes, they have created Fuel injection as a gimmick to sell more cars and to waste more fuel to sell more fuel. In the USA you simply can not import some high MPG European cars.
Let that sink in.
Like the Mercedes Smart car Diesel, that is getting 70 MPG, can not be imported in to the USA.
@Bass N Brass and once you have that a new flavor of the month will be there to keep you divesting your money. cant have the plebs building wealth by inesting in things that increase in value over time afterall.
@Bass N Brass Yep some dude made something similar back in the 70's super efficient carb but suddenly he went missing. Those big oil tycoons & governments don't like the common people messing with their profits that's for sure. The world out there is a nasty place you have to be careful who you step on, but I don't think it's too much of a risk now days the criminals are moving over to EV's you're right there Bass N Brass.
you'd be surprised how much gas you'd save if you let your car naturally (and obviously reasonably) slow down to your stop. On my Corolla iM I get like 35-40mpg on the street daily. It's not the acceleration so much that messes with your mpg as the sudden stops... just wasting all that momentum.
@@KOSAMAGAMES underrated comment. Hate the ppl who honk at you when you're doing that when the light is RED!
The carb cheater ties this all together nicely where the static carb becomes fairly dynamic. Should I do more with it, or is everyone pretty tired of the engineering stuff?
MORE!!!! :)
More - I love the engineering and would love to better understand the cheater better!
Uhh, more of course? Carbs are incredibly more interesting than any form of fuel injection will ever be. Just how much MPG can you grind out of this old rod, and do you think it's possible to do so well on other carbureted engines?
Definitely more
if you can reproduce this result consistently you should try to get a patent on the system and get with a company to start making kits. in this economy you might have a gold mine brother.
I am a mechanic for over fifty year, mostly Ford, and am very impressed by your results with this 302 lawn mower carb results. Wish you were my close neighbor, love to trade information. You've got it together!
You actually believe this bull $hit? I'm surprised a man of your experience would believe this bull $hit. 31 years in the industry myself. What about A/F ratio? Is it stokometric or even close? If it's too lean the N0X emotions would be through the roof! How's the power, driveability? I call BULL $HIT!!!
Well said!
my dad always said there was a 40mpg carb that the oil companies purchased and put on the shelf to protect their businesses. Imagine if cars in the 70s put this on non-performance models. 40MPG on v8s
Ya I’d like more information as well
@@superchuck3259 oh there 100% was a carb built a long time ago that got insane MPG but got silenced pretty much.
The best thing about owning a car like this is that you can say “oh I just hit a board with a nail in it” with a positive tone in your voice.
Tires still cost the same no matter what year the car is. But plugs are cheap and sure this dude can plug a tire...
What's the joke
@@sgasI didn’t know either
@@sgas because if you hit a board with nail in it while driving your brand new gmc Denali you would probably be pretty fuckin mad
@@BlackElephantProject I wouldnt..
I was an engine machinist/builder for JMS Racing Engines...we were in all the magazines. We built engines for the top Sportsman class at Willow Springs and everyone with our engines finished in the top 5 every race. This class was limited to 350 c.i and a holley 390 cfm 2 barrel. We got over 430hp out of these engines on our dyno. We did cheat a little on the c.i. but the point is that you dont need a big carb to make power.
High quality fuel + tuning. Seen what an experienced port-n-polisher can do with a stock block. Shows even tried and true designs always had more room for improvement
@renosimpson9611Nah dude you can totally inhale way more chronic with those huge bongs! LOL kidding obviously, but great point/analogy.
It has been proven that a bigger carb always means bigger power. I guess if you are using a small cubic inch motor that doesn’t physically need more airflow it wouldn’t matter. But if that 350ci motor with a 2barrel 390cfm makes 430hp you could easily make 550hp with a 600cfm. Richard done this test on a 292ci 4.8L and 326ci 5.3L and a 364ci 6.0L and a 408ci he done test with a Holley 500cfm -650cfm-850cfm and 1150cfm. Every motors made more power down low with the smaller carbs. But they always made more peak power with the biggest carb. Unless it was cubic inch limited. Say the 4.8L the 4.8L stopped making power when the 850cfm was installed. It made les power initial throttle hit after 1150 was installed. It flat lined around the same as the 850cfm . The motor couldn’t physically pull anymore air in.. now the 408ci gained power everywhere with the 1150cfm over the 850cfm other than first initial throttle hit. It was the same or slightly less. Only reason why is because the smaller carb had more velocity at lower rpms vs the bigger carb. So it recived more airflow on throttle wack. But once the rpms got up the 1150 velocity woke up.
@@AtfSucks-gov That's not always the case. You can do all kinds of things on a Dyno, but the difference in the real world between a 600 and a 750 was a couple tenths in the 1/4 with all my cars
Maybe you just bad at driving?..@@sadmachines6991
This is totally mind boggling man!! Please take this on a 200 to 300 mile trip and report back to us.....PLEASE!! You have definitely hit on something big here!!! Also, would love to see a dyno pull just to see what it's producing.
I absolutely agree
1/2 the power for x2 fuel economy ta daaaa mystery solved
@@myusername111yup lol and unless he's got his AFR all set up properly wouldn't be surprised if it's running lean
@@MARIOMAKER-wk8vyIt wouldn't be lean because the carb is a major choke and only lets in enough air for the amount of fuel
And at the Dyno it all becomes clear he has half the power.
There is no magic carb that saves 50% if your mileage. Only on TH-cam...
And after 3000 miles nice wholes burned in his pistons...
I'd love to see a longer test drive with this system, like 200 miles of highway to get a better figure on MPG.
This is amazing, keep up the great work!
My thoughts too... Why not take a 200~400 mile road trip for science.
With tools, of course.
Agreed. Do a round trip back to the same exact pump same position at least 5 gallons worth of fuel. You’ll get a close to scientific measurement of fuel economy. Both ways exclude air/wind mostly.
Drive it around town in busy traffic for a couple weeks. See how it stacks up for the life most drivers endure.
@@barbmelle3136 👍👍👍👍
he did he said he drove it for a week
Holy shit batman! My uncle did this back in the early 1960's and got almost 50 mpg on his V8 Chevy Impala. No one believed it. No one cared because fuel prices were so low back then. When he attempted to obtain a patent GM bought him out with a deal that he "could not refuse". He was paid cash and they provided him with a new car every two years for the rest of his life. Just goes to prove that if our government was really serious about saving the planet we would be driving with some of these modifications today.
Of course that happened. We REALLY believe you.
@@alexandria6063 I have to fix my 95 f150 computer because I keep stalling out. A new one is like $300. But I can refurbish it myself for $10 worth of capacitors that I can solder on myself. There's a place for computers, but "modern" cars have gone too far toward becoming tech devices instead of transportation.
Frankly I have a hard time believing that
That’s just detuning.
@@jamiel9902 Carbs have a sweet spot of perfect mixture but only for a certain level of the air flow. So a big carb will have its sweet spot on certain airflow while the small one will have it at low airflows.
Since the best mix is 16part of air to 1 of petrol ... this is the target ... but very difficult to obtain for all the real engine loads situations in daily use.
For a track car engine things become much more simple...
But since the engine displacement= volume is always attempting to pull the same amount of air despite the engine load required ... it becomes difficult to find the perfect balance in sizing the carbs and obtaining the mix required.
I love your unpretentious and humble attitude about this experiment.
And it's actually a brilliant experiment.
I concur, Sir! You have a new Subscriber, and All notifications from me. If I could give you two thumbs up, I would! Fellow Motorhead, with veins coursing with Royal Purple XPR!
The engineers that build your current vehicles have known about this for many years, but giving you that kind of fuel economy isn't in the best interests of the oil companies, politicians who are lobbied by the oil companies and the vehicle manufacturing companies. Along with planned obsolescence and cheaper materials, heavier vehicles and more expensive fuel we are screwed. It's all about the almighty $$$ and how much of our paycheck they can take!
My 79 year old boss, who I worked for 6 years ago, he told me a story of how the original Ford Falcon had a backfire "screen" on the intake manifold, under the carburetor body, so prevent the engine from backfiring and killing someone.
Apparently it was a common thing, when early day mechanics would work on carbureted cars, when they would do a tune-up, they would have the ignition timing off, and the engine would load up, then backfire through the carburetor, blowing a huge fireball into the person's face, and the problem is, the mechanic would "inhale" violently as a scared reaction to the backfire, sucking the fire into their lungs and dying.
This problem required a "screen" mesh to be put on the carburetor. My coworker said that the first Falcon's with this "screen" on the intake manifold, made something like 30 mpg, and so Ford immediately removed the screen, and mileage went down by about 50% - back to normal. The screen apparently caused super fine atomization, which made it burn twice as well.
The engineers that build your current vehicles have known about this for many years, but giving you that kind of fuel economy isn't in the best interests of the oil companies, politicians who are lobbied by the oil companies and the vehicle manufacturing companies. Along with planned obsolescence and cheaper materials, heavier vehicles and more expensive fuel we are screwed. It's all about the almighty $$$ and how much of our paycheck they can take!
I call bullshit
What if it caused knock or other bad thing?
I mean could it just have made the car unreliable.
@@puebespuebes8589A lean fuel mixture can ruin the engine. That is true. I'm not exactly sure how to tune an engine with a super lean fuel mixture.
What's astonishing is that nobody is experimenting with fuel saving carburetors or any other techniques. The mechanics in the 1970's understood the fundamentals of engines in a way that has been lost. Many people figured out how to double their gas mileage back in the 1970's.
You’ve created a Hot Rod Power Tour holy grail!!! Just in time too! Those of us getting 9mpg will be thrilled when production starts! Very awesome video series man.
Dude I was just thinking this
He should absolutely manufacture and market this. This seems like a great, relatively affordable way to at least stave off (if not prevent) the death of the V8.
Just when I'm in the market looking for a 92-94 blazer k1500.
@@elrojo4379 Those are TBI amigo.
@@Kstang09 oh , ok, see I know how to replace parts but lack knowledge on engine, transmission and wiring. I just remember it have a carburator.
I am old mechanic. I worked on cars that had wooden wheels. Young man, you are the kind of person that makes America great. We have had the tec to make 200MPG since 1938. but gas companies make money selling gas. So, NO 200 MPG allowed. Check out Charles Nelson Pogue, The Pogue dry vapor carburetor.
A friend and I did something simular,, we did it with an 88 Ford escort station wagon. The car got 66 mpg. Lawn mower jet and increases fual pressure. It atomizes the spray. Also we preheated the fual at the carb, so the temp change shocked the partials. It's really good to see someone do what we did as every one says it was bs. Thank you.
Nice
My Boy Scout leader was into pure engine oil. He had special filters so that once the oil went thru the engine it was impossible to have wear. Something about micron sizes etc. He also had a vacuums meter and would try to keep things in check to save fuel. But there were some huge hills and he did floor it, that was fun. 8 cylinders roared!
1 how did you heat the fuel?
2 what size carb? what size jet
3 if you remember what was fuel pressure. thanks.
@@superchuck3259 iirc its called a "bypass oil filter" its an oil filtering system used in conjunction with the standard filter system but utilizes much smaller micron filters. Basically it adds an extra step in the filtering system basically a scrubber, without forcing all oil to go through the bypass filter (the low micron filter size causes reduction in flow which is why it cant be used as the primary filtering system)
@@User-sw8gb
1 We wrapped the fuel line around a glow plug to heat it up.
2 It was the original carberator but with a 6 inch neck on it, giving a little more time for mixing and to brake down, The fuel jet was from a lawn mower, the smallest we could find.
3 I don't know the actual fuel pressure but we replaced the original with a high pressure rated pump from a truck.
Forgot to mention that we installed an air pump that worked right off the surpetine belt. I think it was a turbo jet.
We had an O2 rich mix which we thought would be good if we wanted to add a second fuel jet as a "turbo boost", The car though could get up to 105, But the acceleration was nothing to talk about.
The MPG testing we did was from Savanna GA to Knocks TN. We averaged 85 on the high way. That was the only time we really did a MPG measurement, From the Ride up and back.
The car got totaled when my friend got T-Boned as some idiot ran a red light.
This proves the point of the comment I made on the 1st video of this series about people here on Mexico swapping big carbs on their V8's to the smaller ones that came in sedans or light duty vehicles that had the same engine, (or even from 6-cyl engines I might add).
As I said in that comment, the smaller carb probably kills a few horses, but they do save up some fuel.
The way he was smokin those tires I don't think he's losing h.p. definitely not torque. You do know the definition of torque don't you?
@@rexandexler575 he is def losing hp
@@rexandexler575 I think he lost horses, after all top end will suffer more than low end. He also mentioned in the video a "controlled vacuum leak" which is just a fancy way of adding a carburator bypass. The extra air and a small carb that runs rich most of the time makes this a very efficient way of reducing horsepower in the low end, and keeping plenty of power for the top end.(maybe less than the large carb would have)
And you don't just lose hp when you run a engine lean you eventually blow it up
This is a scam people don't try this
@@DNANDROID lol do some research
Hp= torque × rpm /5252
And by the way torque and hp will alway meet at 5252rpm on a dyno graph
When others say add "X" to your engine and get double the mileage you know it's bs. But uncle Luke is a sceptic from the start and took what started as a joke into something practical. And explained the engineering in a way most people can understand, as always.
Hats off to you sir! Thank you for the quality content and yes I'd love to see you try the carb cheater with the bigger carb as well.
Keep your head on a swivel for the big oil guys though lol.
Skeptic
Big oil has a new enemy, electric. If fuel economy preserves internal combustion, then they should be on board. Car guys, on the other hand...
@@nathanbopp6163 It's not big oil that has a problem with EV's its the government tax systems that hate thme because they don't know how to squeeze all the same tax revenue off them yet.
Reality is big oil would love to see us all drive vehicles that use half the fuel while charging us twice as much per gallon so they could sell us half the fuel they do now for twice as long into the future.
The problem is the big government would lose badly on the taxes and all the other related 'fees' they skim off the system from oil well to gas station.
Big oil only makes about 10 - 20 cents per gallon off things while big government gets 2 - 3x and in some states like california 5+X that off that gallon from end to end.
@@nathanbopp6163 big oil makes money off of electric. What do you think powers the mining equipment for battery metals. As well as powers the ships that traverse the oceans taking those metals to manufacturers. Big oil ain't scared at all.
@@handsonlatham7802 Yep, Big oil powers much of the generating systems they need to make EV's work. Zero problems for them on that part given how little work big oil has to do to supply fuel to those systems.
I rebuilt carburetors for a lot of years. (yeah, I'm olde) I also "RUN TESTED" my carburetors on a test engine. A mostly STOCK GM 5.7L with a performance cam, but GOOD vacuum at idle. I ran a 4 bbl manifold and built flat plate adapters for various carburetors as needed. It became a source of entertainment to run the 350 on a 4 cylinder carburetor. BUT - it DID run. I do miss those days ... We did have FUN with this stuff !
maybe u guys need to get together....and a manufacturer . We need not 24/7 crap. This can heal. People could sleep at night and be healthy. There is SOO much more here ....Think a vulcher losing grip on its' prey... wars. Destiny of humanity, still on Earth...and Earth itself! Education revisited . Yes shaking hands, our cells know when it is right........Once you take transportation obstacle out, next is new shelter., healthy food, education for all with great debates for betterment........we are talking the POWER OF TRUTH HERE!!!!!!!!!! The KEY TO RID EARTHS EVIL IS TRUTH!!!!
god bless you.
I saw one on TH-cam who ran a 350 chevy pickup on a home made intake box branched out to several chainsaw carbs. It idled well and would go well enough to get on the freeway, as it basically ran on vaporized fuel.
The engineers that build your current vehicles have known about this for many years, but giving you that kind of fuel economy isn't in the best interests of the oil companies, politicians who are lobbied by the oil companies and the vehicle manufacturing companies. Along with planned obsolescence and cheaper materials, heavier vehicles and more expensive fuel we are screwed. It's all about the almighty $$$ and how much of our paycheck they can take!
@@stevet5379 100%
I just have to say, this man is like the Moses of automotive tinkering. Someone on facebook said "You can't" and this man went full rocket science, made it work like a dream, and then pulled out receipts.
nay sayers are actually people who never do anything themselves
@@omegarugal9283 Or people that understand the basic principles of physics.... and no better fuel atomization doesnt quadruple your fuel economy... the tiniest, carb, with all the bends you'd ever imagine won't give better atomization than direct fuel injection.... and this motor with that still wouldn't see a 4x increase in fuel economy.
@@dustinleavitt7770 you say, but i have done a lot of mods like this and got my own results
@@omegarugal9283 your getting 40+ mpg out of a 3500 pound car with the aerodynamics of a brick .... Then you should clearly go make millions as the head engineer for a car company! Your clearly the smartest of them all.
@@dustinleavitt7770 so you dont believe the video you just watched? Sheep
I've been a Ford dealer tech for almost 30 years. I've heard stories that a properly set up VV carb is the closest thing to fuel injection, without actually having it. VV carbs are somewhat dynamic in their operation, but work differently from your set up. I also don't think you'd get anywhere near the fuel economy that you're getting. It is impressive.
His is more akin to port injection with an idle air control valve. He may not know it but his tuning is very well done for mpg efficiency. He is essentially running on gas fumes but can dynamically rev it high for more power(and lost of gas). I doubt he will get much for speed but noone needs a fast af car. His system is very seamless when it switches from fuel efficiency and more power. 40 mpg is very possible on most V8s.
Ford-Europe actuallly used VV-carbs on the Taunus/Cortina 1.6L OHC Pinto engine. (my 1980-1982) If you ran the car gently it would get pretty good mileage. Better then with the older conventional carb.
Ain't those VV carbs just worse Su carbs? Or motorcycle CV carbs?
@@acters124 it’s running rich until he opens a secondary fresh air valve to get the proper ratio mixture (controlled vacuum leak). Watch the series on this build and he explains.
@@jfv65 Ford used a VV on the 302 engines around 1978-1979. My father had a 1979 Crown Victoria with an original VV carburetor.
Great job!! In the 1980s, before EFI became commonplace… Most major manufacturers had electronic carburetors of some type or another, that used a pulse-width modulated fuel mixture control needle, versus your PWM air bleed concept.
This has been fantastic to follow along with!
That’s kinda how my Stihl chainsaw with m tronic works. It controls the fuel with some electronic fuel valves.
They also sell those for carb motorcycles made today. they are normally drop in replacements to help with starting and power
@@pleasedontwatchthese9593 Sounds like the electronic motorcycle carbs would be a good pre packaged option
They always had issues with electronic feedback carbs back then too. Everything in the carb and on the engine with it's mounds of vacuum operated emissions system had to be working correctly for the MC solenoid to function correctly. There was always issues when they came into the dealership to get worked on. Fuel injection came out and made things simpler and easier to work on.
@@FishFind3000 I know a guy with a 1970s Volvo with k-jetronic analog fuel injection! It's very cool, and works very well!
This is one of the most informing, entertaining, and innovative car videos I’ve seen in years!!! You are great on camera, I love your humor, and you are thorough in your explanations! Good to see another Iowa guy pushing the limits and stepping outside of the boundaries!
-JR Kingsley IA
This is actually just the end of the 3 part series 🙂
@@ThunderHead289 I’ve recently watched a bunch of your content, and not only am I very impressed with your lawn mower carb testing, but also your electronic monitoring system overall! It’s super rad! Love your old ford farm truck as well. Wish the prices were what they were when you got it. Finding one worth buying for what they’re asking in NW Iowa is tragically overpriced. Thanks for all the content you put out it really is great stuff!
@@ThunderHead289 You still with us after 7 months buddy?
The G0v isn’t crazy about smart ingenuity in a young man like yourself or anyone else.
I would love to see a long term mpg test. At least 200 miles. Taking it on power tour would be epic. I would love seeing a few more videos on this setup.
A livestream of power tour with a camera angle on the fuel tank would shut all the naysayers.
Agreed. Bet much less than 41 mpg with a real test.
I like to see a 1500 mile all hwy test
One needs to install a dedicated odometer. The Maverick's is found on road dead.
We would have to have a controlled experiment with multiple participant vehicles to see if we can eliminate variables and figure out if this really works. THAT WOULD BE COOL!!!
This is just the type of work that actually makes TH-cam suck less. Wonderful work and insight into the issue at hand. Your controlled vacuum leak observation is a great fundamental solution to the problem. Is it just as simple as the atomization? It may be.
Sure it is.If you sucked liquid in nose you would not work good. Think of how refined oxygen is. We spray feul almost puts fire out that way.
Homey smart meh!
They could run it just on vapors
Carburetors engines are most efficient at wide open throttle. The economy gain is largely from eliminating intake runner vacuum caused by the throttle butterfly blocking airflow. In small aircraft we often cruise using wide open throttle and control engine rpm with engine load by adjusting the propeller pitch.
Selecting a carb that is going to operate at near max throttle during normal operation was one half of the success. The carb cheater is the genius second half of the equation. You will see less gains when you use a carb that isn't so close to max flow during normal use.
Wide open throttle on the carb does not mean zero manifold vacuum. The venturi on this carb is so small, that even WOT will be in a vacuum at anything above idle.
@AmericanLocomotive1 I guess you didn't brain the part where he's talking about sizing the carb for application not saying it applies to any sized carb on any sized motor.
@@chubleza large carb at half open is the same restriction as a half sized carb at wide open. Its simple math.
Holy moly 😲 this is incredible! I recently got an 1989 Ford F-150 300 straight 6 and 40 mpg sounds like a dream! I might have to learn some engineering/mechanics... just wow! Awesome stuff.
I'd love to see how this does on a dyno. Also, try that setup on a 4 banger and see if you can get 50-60 mpg.
It is a four speed manual.
I was going to say that. Put the same set up on a old carb 4 cylinder engine.
@@blipco5 He meant 4 cylinder engine, not 4 spd transmission. Needs to find something like a SVO Mustang engine and do a full build on it with all the cool parts.
Some late 70s Hondas can already hit that
@@blipco5 A four-banger is a 4-cylinder engine.
You need to burn more gas to get an accurate mpg reading. Drive highway until you're less than 1/4 tank and calculate based on the odometer/trip meter and gas to refill. Repeat in city driving conditions (if such a situation even exists in Iowa lol). I would also be interested to see dyno numbers compares to the 4 barrel, just out of curiosity. Great video series, very interesting!
Agree!
yes please do more testing. these are amazing 1st results/.
I’d be surprised if it makes more than 50 horsepower to the wheels and 100 foot pounds
Just drive it around for a couple weeks.keep track of your numbers. It would be realistic mpg.
Most of us don't ever see true mpg.. because of our foot and driving habbits.
do like mythbusters, put in a fuel cell, measure out the fuel before and after under different driving conditions, will give more accurate results. Looks good so far though!
Thanks for sharing your creation. Yes, you are correct in your hypothesis why it's getting better mileage. The greater the vacuum, the more the fuel will evaporate or atomize, and the better it will burn, giving the same power with less waste. Well done!
That's like saying a car will get better gas mileage with a dirty air filter -- lots of vacuum then; so why does it get less mileage with a dirty air cleaner?
@@TimK-1971 I wouldn't believe everything I see on TH-cam. Especially claims where someone more than doubles the gas mileage of a motor vehicle. Isn't it strange that auto makers never figured it out to use lawn mower carbs on their engines.
What really stands out to me is the chain motor mount assist. Is a marvel of engineering. I totally love it.🤙✌️🖖
Saves on motor mounts lol
That torque strap chain brings back fond memories of drag racing when I was in high school in the mid 1970s. It took me several cracked windshields and a couple of transmission cases before I figured out how to control some of the chassis twist.
That's amazing! In all honesty I didn't think the gas mileage would be so good I figured MAYBE 25, 30 but definitely not 41mpg congrats, you honestly deserve a the proper recognition for what you have accomplished, my hats off to you!!
ok lolol
32 in a 4.3 v8 caprice is common and 26 in a V8 80s diesel chevy truck
Cool. Brings me back to my 4door 302 Comet. Was "Grandma's Car" and her grandson didn't want a 4 door. What a fun ride for $300. It had 34k on it.
My ex took it to college and I never saw it again. At least one of us got a deer that season.😊
Womp womp.
Don’t be surprised. Your right about the vaporization of the carburetor but a big difference is the leaner mixture due to your controller. In my twenties I took a Fiero Gt 2.8. bored and stroked to a 3.2 with some performance enhancements and balancing. 30 mpg then added a potentiometer to the O2 sensor to fool the ECM, giving me control to lean the mixture. bumped mileage up to 38 mpg without any precision monitoring system. Didn’t lean up too much because that would burn out the catalytic converter and over heat the engine. So in hindsight I learned from my advanced engineer dad , who created the PCV valve , that Catalytic converters require unburnt full to operate. That means our modern cars with multiple CATs waste fuel so the Cats can absorb non combusted fumes so they too can burn and glow at the right temp for the catalytic process to occur .
This is great! My dad used to fit smaller carbs to bigger engines as well, but he's theory was that it would restrict the fuel supply, I think your theory on atomization is more plausible.
The most common mistake that was made on kids cars when I was a teen is using too large a carburetor. Most contests we had were light to light and torque won out every time. Sure, you could build a 301(3" stroke 4" bore), spin it to 8000rpm, if you balanced it well and used white pump gas, but even a 625 CFM carb was a little much. Any time you are blowing out black smoke, that is unburned fuel.
@@route66paul That's a good one I'll be back tomorrow afternoon and I'll have to check out the set up.
It would be interesting to see how much power the mower carb could put down. If it's anything decent you better watch out. The oil and industry hit men are coming for ya!
@LabRat Knatz can you imagine? "We solved the chip shortage". LOL
At this point they might welcome this actually. They got much bigger problems coming up with electric cars, not to mention the government wanting to ban gas cars all together and force everyone on electric, hell they announced in CA that no more gas cars can be sold there after 2035 I believe. My suspicion is that this also substantially cuts down on emissions as well which would please our commie government. Ironically the one thing they were against, suppressed and silenced at one point may now be the only thing that can save them.
@@johnmurraycompton569 The chip shortage isn't really for EFI but like everything else around it. Motorcycles with EFI have returned back to normal prices because the tech needed to run just a engine is really basic
That’s not a joke, it’s happened.
Politicians talk a good game, but they don’t actually want people getting good mileage.
The geo metro got 50 mpg in town, I had one I know. Why couldn’t they have improved upon that instead of burying it?
I had a 74 Ford Maverick with a 302 automatic back in the early 80's. Loved that 302. My Dad and I were always working on cars in the yard. This carb trick would've been something I would've tried back then if I thought of it. I enjoyed this series of vids. Thanks!
When I was growing up (60’s & 70’s) a Plymouth/Dodge dealer I knew REALLY well, friend, and he worked on our cars. He had a new vehicle come in that a customer ordered. Back then you needed tune ups and when he came in for a tune, he asked customer how was his gas mileage. Customer said it’s the best car he ever had for MPG averaging about 30-31 mpg. It had a 318 ci motor in it. When our friend opened the hood to look over he said he NEVER seen a carburetor like it. (Also back in the day, mechanics had tests or shows for competition, our friend placed 1st in state), anyway, our friend did a tune on it and customer averaged about 32-33 mpg. He called Plymouth technical department about it. Longer story short, Plymouth wanted that carb back which he removed and put shell we say ‘correct’ carb on. Customers mpg dropped back to about normal for the day, about 20-21. He wished till the day he died he would have never called tech department and just kept the carb, figured it out, then start producing them. I will till the day I pass believe government, large manufacturing etc etc are in bed together. Sorry for long story and side track, but I believe we, people, us, will NEVER SEE A CURE for cancer!!!!! WHY??? Think deeply, VERY DEEPLY, on the economic side if they did find cure!!!!!! Hospitals, treatment centers, drugs, special doctors, etc etc etc etc, anything that has to do with treatment, would not be needed!!!! Don’t believe ME??? Just think of the last four years about Covid and how the government and drug companies shoved it down our throats!!!!!! Yes, my best friend died of it, but, it was NEVER EVER EVER as bad as they said it could & would be!! Sorry for side track, I vented for the day, have a great day everyone!!!
ya right
Vitamin B-17 will cure cancer , that's y they don't make it.
@@sawmillguy9706🐑
"Yes, my best friend died of it, but, it was NEVER EVER EVER as bad as they said it could & would be!! "
See also: Cognitive dissonance. Still, it really wasn't as bad as they initially thought - mainly because they didn't realize how many asymptomatic cases there were to bring down the death average. That said, it still racked up ~10x the death tool of the worst flu year of the last 20 years in the USA.
Anyway, about the carb:
Funny how many people all seem to know someone that had some special prototype carb that was secreted away back to the manufacturer. Funnier still that they all mirror the same urban legend that ended up so popular it has its own entry on Snopes.
Common story told millions of times.
I’d love to see this on a slant 6! With gas prices what they are, you should market this!
bad idea, guys that have promoted their amazing fuel saves tend to disappear or die randomly
That or most of the fuel saver gizmos are snake oil
@@grahambain3762 true that happened awhile ago someone built an engine to run off water. Next thing you know he died out of no where.
Everyone that has tried to sell things like this get killed off
@@BigTony_Garage engines that run on water...
Steam engines come to mind. Very efficient. Check some out on Jay Leno's garage on TH-cam. He drives them through town and on the freeway.
I know that's not what you were talking about. You were thinking of a hydrogen powered engine.
More of this please! I’d love making a V8 land yacht from the 70’s/80’s have ridiculous fuel economy like this. Dad was a mechanic, I know very little of that stuff. He drank way too much
Makes me wonder, how would it work on a real yacht or I/O cabin cruiser ?
He probably drank because of his life he had.
Yeah, being a mechanic can be frustrating and drive one to drinking. 😵💫😜
My dad was a mechanic that also drank a lot .having 5 kids and a tuff upbringing didn’t help matters.I have a 1963 buick electra sports coupe and a 99 suburban I could use this set up on both of them
@@hidel308 Yes especially with a bunch of brats at home.
I recently bought a 1976 F350 with a 302 Cleveland. Now, I knew what I was getting myself into, but I always had the overarching feeling of "yeah, this ain't ever gonna be a daily driver, more like once in a fortnight. The fuel price is gonna be crazy".
Now, after watching this series and actually seeing that options are available, adjustments that are not excessive can actually be made, and making it a somewhat reasonable vehicle to drive isn't nearly as impossible as it once seemed; its just about working using logic and information that is readily, and adjusting to what the conditions allow. This video was an eye-opener for me, so thanks a bunch, and I can't wait for the continuation of the series!
It's really good stuff. I've been into vapor carbs for years now. I'm finally trying to make some.
No you didnt
No such thing as a 302 Cleveland. Unless you live in Australia.
302 was a Windsor and the closest to a 302 Cleveland they made in the USA was the Boss 302 which was a 302 Windsor with Cleveland heads on it but they are rare.
@@todddenio3200 The 302 was made in Windsor, but technically only the 351 W was called a Windsor. The 302 and 289 were just small blocks.
I was born in 67. My first car was a two door 72 Maverick. I miss that car more than any other vehicle I have ever owned.
Fascinating stuff, never thought of doing mixture management with a closed loop air bleed but now that you've done it it seems so obvious.
Hey Luke. The next major question would logically be what is the cost for the little electronic unit and metering box setup? If it will take a vehicle doing an average of 25mpg to over 40mpg, that is an extra 150 miles in a 10 gallon tank, mate. That's nothing to sneeze at - and certainly a veritable Hail Mary for all the blokes out there with V8s that just want to use them as everyday runners.
I'd be interested to see the results of you running the Maverick to work and back for a week - you know, including the typical daily running stuff, trips to the store etc - and see how it does. Sure, getting the electronics to work with a Holley 390 is one thing, but when she's doing so well on the lawnmower carb, why not keep going and see what happens? Then maybe run it for a couple of hundred miles WITHOUT the electronic metering unit and see whether there is still some form of savings for running a lawnmower carb on a V8....or if it definitely needs that electronic wizardry to make it do its thing.
Another thought - how well did it accelerate? Was it notably down on power from the usual carb you run on it when using the lawnmower carb?
I would definitely like to see a dyno test to see how much power it lost
Why would it lose power, most gas doesn't burn up or used to push, so why would he lose power, 100% burn Efficiency means power loss??
@@colesoucey5511 because it's choked off it doesn't have the flow of the stock carb. Better fuel economy = less fuel. More power = more fuel.
@@FroztiProductions Efficiency is a measure of how well that power would be employed in the first place, My concern would be potentially high RPM flow efficiency, but at lower speed it wouldn't really matter about power. More important to V8's is the low-mid torque curve, if that engine still maintains most of it's low end torque, then higher economy doesn't mean slower per say. You both have valid points, but only long term testing of application would quantify the answer, most likely this is not the final iteration of this setup.
@@colesoucey5511 No gas conventional engine will be close to 100% fuel burn But this is pretty cool how he is using some homemade electronics to regulate the the vacuum to adjust fuel mix.
@@gitfindasettahpanzy9892 The term "fuel efficiency" is open ended. Efficiently consuming fuel to do what? Travel further or faster? Drive slow, use less fuel. Make less power, use less fuel. Of course a poorly designed engine can use excessive fuel AND make little power which is what I expected this experiment to result in honestly. I'd like to see an AFR reading.
My God. If someone would have told me that having a screwdriver keeping your glovebox closed looks cool I’d think they’re crazy. On this car it just looks part of it! Awesome
I love the engine hold down chain for a broken engine mount!
When I bought a used 1971 duster in the eighties upon lifting the hood I discovered that unaware of the chain repair they had trimmed half of the fan blades off to avoid contact with the hood due to a broken motor mount so after I fixed it temporarily with a chain I still had to get a fan .this was to be only the beginning of the trauma as I went about restoring this car .only to have a truck total it as it neared completion probably a good thing as I would have probably drove to fast and wrecked it eventually anyway!
@@danielcline7413 I had a little dent in the hood of my 66 fury from when an engine mount broke!
@@grayharker6271 thanks for the reply I'm not that old early 60s but you know what I miss about old american steel you could buy a car like the duster I mentioned over 100000 miles on it for a hundred dollars and drive it off it might not run or handle great but between your friends and such you could diagnose repair and drive it no computer hassles easy to get parts I miss the good old days
I did the same thing on my '76 F250 inline 6. It rotated too far once and broke the fuel line spraying gas all over the engine which of course burst into flames. I was two blocks from home so I ran, got an extinguisher and ran back thinking it would be a total loss. Put out the fire and after it cooled down I inspected the damage.....one burnt sparkplug wire! After that I chained her down.
@@charleshultquist9233 I've had so many similar incidents that heres a confession my nieghbor was working on an amx distributor the point variety very low hood and somthing told me to tell him to make sure the ignition was off but I didnt.and as expected he started messing around with the feeler gauge I'm watching out my window and then as I knew what was next the double whammy first the shock and then the withdrawal impact with the hood .at the time I guess I got somthing out of it watching it happen to someone else now I'm kind of maybe a little bit sorry anyways sorry to dump my confession on you thanks for the chat anyways
I love this content. I always thought there wasn't much engineering you could do to improve an old carburated engine but clearly I was wrong. You are awesome!
it would be great to see a comparison video for the max fuel range from 1 tank of gas from completely full to empty between the lawn mower carb and the 390 carb.
I've got a dodge 440 engine I would love to try this on
hilariously awesome stuff and the numbers blew me away
If that maverick was mine....I would NOT touch that set up....leave it as is and get a new tinkerer car. Some folks might want to look at it....or buy it. Again, run that thing 100 or 150 miles(with tools:)) and verify performance. Prolly having a manual helps too...less loss than an auto.
I just found your channel in March 2024. The V8 is a good candidate as it has sufficient torque along with the steep 2.79 gears to shuffle the car along with the swirl and vaporization you speculate on.
Now, add a second mower carb with a progressive linkage system that won't allow it to open until the first carb is wide open, along with your mixture leaning device adding more air only when needed you may hit the sweet spot of cruising range and the ability to have power for long grades or mountainous driving.
Best regards.
Maybe for another episode you could drive it for a week and then calculate your fuel mileage from average driving scenarios after it has used more fuel. Or take a longer trip, maybe 100 miles round-trip.
Yeah the smallest error really changes the MPH. This is NOT accurate!
He isn’t going to do any longer trips with this to show any different gas mileage because it’s all BS
This is amazing Luke. I bet you could patent your intake plenum and there would be a substantial market demand to put this in production. This is the first time I've seen a legitimate system for getting significantly better mileage as well as drivability. Well done, it's good to see someone who can work with their hands and use their brain. 👌
According to Joerge Sprave from the Slingshot Channel, it's considered "prior art" legally once you post it up online like here on TH-cam or other social media, so not likely he can patent it at this point. Also according to Joerge, who happens to be a retired patent attorney, this is often better for a small time manufacturer, because having the design in the public domain protects you from having to litigate patent issues in the future. It does open you up to have your design stolen, but it basically protects a patent troll from swooping in and suing you for a design that they later patent. This came up in regards to videos on Joerge's repeating bow design, which I would highly recommend checking that video series out. Really cool tech he came up with and I learned a lot about IP law in the process.
I am not a lawyer, but the info from Mr. Sprave that you quote really needs to be verified. I would strongly recommend that Luke look into patenting this, if only to prevent trouble later from patent trolls as you mention. Also, this would make a great article in a DIY magazine such as Popular Mechanics. I hope they consider it.
@@greatwatermeloninthesky7642 I agree, Luke needs to patent this yesterday. This WILL get stolen and someone WILL profit from his marvelous ideas and engineering.
@@greatwatermeloninthesky7642 Joerge is a lawyer. I don't need to verify it. He's the expert.
I would like to see a more scientific test done by using an exact 1 gallon of gas and run it till it stalls.
ProjectFarm needs to get his hands in this project.
I came here to say this, or at least suggest that you go a much longer distance, and use the same pump at the same station to lower the error.
Do more. Like 5. It will give a more accurate number.
Then do 5 gallons in city driving.
An easy way is to put full tank t
Drive 100 miles the full tank again.
@@samus40glock a colaberation between them.
What a great channel. Our best man back in the 70's owned a blue '73 Maverick (aka Blue Devil) with the inline 6. He added headers and high flow exhaust - made that car run like a scalded dog.
41 mog while rounding up and spilling out a little bit. Honestly I wouldn't be surprised if you truly got 50+mpg. I would love if you could find some time to have it dyno tested. Also, you should start printing out hundreds if not thousands of those carb adapters. I want one.
Agreed Id even donate to cover the dyno bill
Yes! My dad and I have said for years that the oil companies have had their hand in the pot when it comes to engineering and people don't want to believe it. Here's a really easy simple proven example. A V8 that gets 41 mpg...🤔🤯
Me too, id love to see these on v8's everywhere.
Yes u could mass produce these. Do the adapter with the carb pre set up n it could make you some big money. I would do it. N I know many others who would too. Especially w the current gas prices
@@mrfordman9999 a super old v8 at that
Wow!I believe you're correct about the atomizing of the mix,it surely does more than my expectations, as far as the overall drivability. I've never had the financial ability to do many of my ideas, and I'm glad to see someone with likewise understanding to finally accomplish a very worthwhile endeaver.MY HATS OFF TO YOU BUDDY!
You don't have to pull off the road to show us under the hood. You seem like a honest guy.
Well his viewers that have watched many videos know he isn't "pulling our leg" some random person could happen across and be like "this is fake, I'm reporting this"
You'd be surprised in today's environment. You can show absolute facts and truth in something and a bunch of these window lickers out there will still dismiss it as flat out lies.
I bought a Ford Focus the first model year. One of my learnings from this mistake was that when a small hose at the back of the motor developed a leak fuel economy went from close to 31 to about 49. Acceleration was non-existent. It actually lost power if you stood on the gas. I planned to install a manual valve in this line but after the 5th potentially lethal recall I ditched the lemon instead.
It's stuff like this is why I am a fan of yours, Sir! Had a quirky idea and ran with it... Wow! Look at those results👍
I personally love this sort of content. Keep the engineering stuff up. Making new solutions for old problems is very interesting.
I think you questioned how this would do with the 390 Carb. That's exactly what I wondered. Seems like you would need to limit the amount of air allowed through the IAC Valve so the secondaries would still work, assuming it's a 4160, or integrate a throttle position sensor. I would imagine you could get some great results while the car is running on the primaries. Creates some interesting problems to solve. You have me very intrigued by this whole experiment.
Guess we're getting close to the feedback carburetors of the 80's when taking it to this next step. It's been fun to follow these videos.
Great job man I thoroughly enjoyed this and who knows about telling people bout it we all know the whole MPG dealio like pretty much a lot of things in this world are not to their full potential and kept there for a reason.
We love it here man
This is just insane to watch. Youre onto something groundbreaking, please continue for everyones benefits. Innovative and inspirational. Great job, cant wait to see more
He’ll get suicided by big oil before he’s able to help anyone.
It’s happened to 70+ people in this industry
@@blackfacegaming191 source; your ass/ conspiracy theory Facebook group
He's gonna mysteriously disappear bruh
Wow, this incredible. I envy what you got going there. I would to see in more detail the lawn mower carb and how it is mated to the intake.
When you think about it, it makes perfect sense. Back in the late '40s and early '50s, there were plenty of v8s running around in the high 200 cubic inch range which had one barrel carburetors on them. These engines in big land yacht cars and pickup trucks with no overdrive and low gears where getting 20+MPG or somewhere in that neighborhood, with no dynamic tuning.
absolutely!!! my 53 Dodge 241 HEMI V8 touted 25MPG off the showroom floor!
My '69 Catalina with the 400 V8 2BBL, 2.73 rear & 3-speed auto got near 15...with the carb way out of tune! After getting that Rochester 2 Jet back up to spec, it's getting at least 19 now. That's not bad at all considering it's a tad over 4,000 lbs. Pre-Malaise era cars weren't the horrible gas hogs people nowadays make them out to be (when they're tuned right)
Old motor head here. Just found ur channel...GREAT STUFF!!! Screw the haters. Back when I was building and racing late models I did modes that guys in the pits would whisper "he's a wack-o thinking it'll make a difference." But I only ran motors that came out of the junkyards...small block 4-bolts out of junked pickups. With the tweeks I did, e.g. jetting the carb differently on the left v right because of a slight difference in centrifugal force ( running oval track, as they joke, go fast...turn left ).
Haters will hate...it seems to be their call in life: don't ever do anything, just hate on anything that anyone else does.
Best to u my friend...I'll be watching.
the average beer-head is run down they want to reduce everyone to their level. come to think of it - actually it is the average person. " when a pick-pocket meets a saint
, all he sees is his pockets. "
Haters might just hate, but gullible people will swallow an unbelievable level of bullshit and believe it's true. If you raced, then you know you can either use gas and make power or not use gas and not make power. The carb doesn't have anything to do with the energy content of the gasoline.
All racers are whack-o's. That doesn't really matter. Did you win races? Then we find out if you're whack-o, but clever.
This is about fuel economy not speed. You won't be winning any race when you are trying to save fuel. Most people say bull haven't even tried it first to prove their point so the bull people are full of it . I want the see it don't work I seen many that do work. Right now does work won. 73
The engineers that build your current vehicles have known about this for many years, but giving you that kind of fuel economy isn't in the best interests of the oil companies, politicians who are lobbied by the oil companies and the vehicle manufacturing companies. Along with planned obsolescence and cheaper materials, heavier vehicles and more expensive fuel we are screwed. It's all about the almighty $$$ and how much of our paycheck they can take!
Humans are like crabs in a bucket.
Your channel is now one of my top automotive favorites. I enjoyed your methodical and science based approach in this series, very impressive.
I’m keen to see your spark plug colour after an economy run like that. That would tell you if you’re doing any damage to the engine.
I’ve checked cyl 1 periodically since it’s easy to pull. No discernible difference - as would be expected with proper afr
He's running 14.5:1, just like any EFI car.
@@ThunderHead289 You gave several valid reasons for good mileage and I have another, remember that you advanced the timing "all around." That should help mileage and at least some of that advance should be possible with a larger carb, tuned to coordinate. BUT I don't believe you got 41 mpgs for a second!! 35 miles was nowhere near enough to compensate for possible changes in the angle of the car while filling or fuel tank venting issues that might leave an air bubble in the tank (I have had several mud daubers in fuel tank vents).
I think you can see why I am a big fan of spread bore and 3 barrel carburetors, though the only 3 barrel I ever saw, on UTG, had a huge, combined secondary rather than a single little primary and 2 big secondaries as I would like. I am looking forward to see if you can find a way to bring back some performance without losing the mileage, hopefully in a way that I can use to up my mileage on my Lean Burn W150 with 225 slant 6 and 1 barrel, or use when I restore my 318, 2 barrel, 1978 surfer van. In both cases I would love to reach 20 mpgs while pulling a trailer at 55.
@@ThunderHead289 Also, considering the time period, Maverick aerodynamics were far better than bricks, and substantially better than W150s.
@@rcdieselrc Modern street cars do not run at stoichometric AFR. They run rich on purpose to make the catalytic converters work.
This is amazing, I love it! You're 100% correct about the fuel atomization too. The smaller carb is greatly increasing the air velocity which in turn increases the turbulence, which atomizes the fuel better. The only downside I can see is your horsepower cap based on the intake restriction from the small carb, but I'm sure you knew this would be the case.
Personally I'd like to see you try this on a late 90's 4 cyl car, like a Civic or a Cavalier. Cheap to buy used with light, more aerodynamic bodies. Ditch the FI, swap in a small carb, and test/tune. Wanna bet you'd pass a Prius for MPG's?
THEY made sure carbs were taken out of the equation for more than one nefarious agenda one of which was making sure there is an ecu on everything we have. Carbs have a lot going for them where here in Japan we still have 1996 carbed daihatsu Kei mini van that gets 56mpg vs the latest high tech daihatsu, suzuki and honda mini vans which only get 40mpg and match 56mpg with latest stop start no idle technology.
@@altruismfirst6489 I'm not entirely sure about this statement. "THEY had a nefarious agenda to make sure all cars have ECUs"... So, is there something wrong with EFI? I mean, there's also mechanical injection as well completely without any digital modulation, and even mechanical injection ports have proven to provide a noticable increase in thermal efficiency.
I do admire something about the carb communities: It's dirt simple, cheap and easy. Just very far from efficient.
@@bluspectre2042 it's like 15% or less efficient, if you dyno tune a carb it can be brought into the single digits.
what can go wrong with efi? 8+ sensors, high pressure pump (in the freakin gas tank), plugged injectors, ecu, fuel filter (under the freakin car on most) catalytic converters.
what can go wrong with carburation? fuel pump (front of engine 20 min fix) fuel filter (next to carb 10 min fix). not to mention the price to replace those parts.....So yeah there's a very good reason to be pro carb.
Tiny Turbo! Tiny Turbo!
Would you sell me your maveric? For 7,000.00?
I used a Gm Carb on a Dodge 360 avg 26 Mpg. Getting 6 to 7 Mpg better then factory back in 1990.My theory was less CFM,s and smoother idle and better vacuum .Didn,t have as much power and didn,t care.Great Job never thought i,d see the day when a Ford 302 would sound so good.Thanks for sharing.
Awesome Luke! Beware of "big brother" contacting you wanting to purchase your design to supposedly "market" it when their intentions would be to shelve it to prevent the public from getting hold of this. I have heard of this happening decades ago! Great job!!
Exactly. Theres no way big oil would allow these innovations to reach market. Theyve been suppressing automotive inventions for decades. Sadly, the O.p. should be careful of how much attention this gets.
lol that's not gonna happen considering gas engines are on the verge of becoming illegal to sell
@@GabeHelma I don't know which rock you two have been living under, but fuel injection has been industry standard for nearly three decades.
Furthermore oil companies have been throwing billions behind wind, solar, and electric vehicles since 2013 first as a tax break and now as an investment.
@@Jixijenga yeah because we all know the "modern" computerized v8... or even 4 cylinder... engines on cars today that are half the weight of this one, are all getting 40 mpg *minimum*. They have to be right? Since an old 40 year old car with an obsolete design carb engine can do 40 mpg, these new latest and greatest advanced technology wonders on wheels with their electronically controlled fully computerized engines and every "pollution control" in existence. Plus adding ethanol to the fuel which must give a better mpg since its made from corn that could have been farmland used to produce corn or other crops for food instead of ethanol, especially being that ethanol takes more energy to make than it produces. So 40mpg surely must be their bare minimum efficiency for todays vehicles. None of that stuff is to keep people relying on, and tied to, energy sources that only the gov and their companies have complete and total control over.... just like the food supply and everything else today.
@@Yhrim70 I'll be honest, I don't know what the hell you're talking about because I didn't read past the first eleven words. That's all I needed to know that it had jack shit to do with what *I* was talking about.
Nobody is going to come after this guy for tinkering with an old 302 and a lawnmower carburetor because the world has moved on once already and is in the process, right now, of doing it again.
You may have made history here my friend, massive hats off and props to you on this!! Keep going with this!
This is some old-school stuff he's doing. People started playing with this same principle back in the 70's and 80's, using motorcycle and small industrial engine carbs that could be easily tuned with simple screw adjustments and jet swaps, when emission compliance came out and vehicle fuel milage and power tanked for it.
Sounds like you should offer kits for others to try. It would be a fun test for sure.
I'm sure this has crossed his mind.
Yeah, I wanna see how this setup would work on a big block, big car, cruiser - something where you're not really worried about HP, torque, or speed. I think that's where this would prove the _most_ practical.
Imagine something like an old Continental getting something like...30 MPG. That would be insane, especially with their normal capacity.
Did you see how much work went into making the elbow alone? He'd have to charge like $500 to make it worth his time.
This simply proves if you put less fuel in your car you can sacrifice all your power for mileage.
Dude, your project made you the coolest person on the internet this week.
Love the concept-could solve a lot of problems in low cost engines like generators, lawnmowers etc because no high pressure pump is needed etc. You likely wouldn't need a battery on these small motors - motocross bikes use EFI powered by Capacitors now that fire on the second kick so running a few PICs to control an air valve should be a piece of cake.
I'm sure that it would take some refinement to become commercially viable, but I think there is a place for this.
I’ve been called a lot of things, but never “the coolest person on the internet” before 🤓
It's not just controlling an air valve though, you need the oxygen sensor and all the signal processing that it needs to tie everything together for really accurate mixture control, though it could run open loop with less accuracy. It's not a new concept, there was a fair bit of interest in controlled air bleed carb designs back in the early days of EFI e.g. look at US patent 4320731 from Ford.
Well, if you’d have had Koolaid colored hair and a gender pronoun things might have gone differently, lol!
Definitely keep going. Nothing ventured nothing gained.
😎
Man, watchin this whole thing evolve throughout this series has been pretty kool. I know you said this was intended to be a joke. But it seems to me that there are a ton of practical applications for this tech. and possibly a huge market for it. Great content man.
If he makes it to where everyone can get it, it will literally put old cars back on the road if all done properly!
@@masonthompson4363 ...There have been plenty of fuel injection kits for older cars.
They just had max performance as their design objective.
If they incorporated a small throttle valve with a larger secondary, they could maintain air velocity similar to this, but with reserve power (V8 power)
This carb simply removes the users choice to use the V8's potential.
That sounds a lot like wearing running shoes while wading in three feet of water.
You won't be running.
It would make for a nice addition to my gen-set, a riding mower, snow blower, etc.
Those machines have the politicians eye atm, so I don't expect that gas versions will be available much longer, or cheap fuel for them for that matter.
Maybe it was a good idea twenty years ago.
Truly amazing, Luke. Thank you for sharing.
Now, get those carb adaptors and the electronics into production!
Those string alignments are sometimes far more accurate than the laser alignments from shops. I have had a shop give me my car back with one rear wheel being at +1* Camber and the other at -1.4* lmao.
Safe to say I never went back to that shop, and shortly thereafter, they went out of business!
You want something done right, sometimes you gotta do it yourself!
This reminds me of my truck, it's a 1981 Chevy K10 stepside. It was my stepfathers truck then he passed and I inherited it. It was the first vehicle that I drove on the day I got my license at 16. It had an inline 6 with an Edelbrock intake, split headers and a 1 barrel carb. I could put $5 in the tank (gas was $.99/gal then) and drive around all day. I never checked the mileage though. Now it has a 350 with a 650 DP on 35's and get's terrible mileage. It runs great though! It does make you wonder with all of the tech on vehicles these days that we're not getting 50+ mpg now. Most, if not all, engines are direct injected with variable intake and exhaust cams as well as computer controlled timing. Most also have variable controlled intake runners. Many vehicles have had this tech for a couple of decades now. Kind of leads one down a conspiracy type of road!
$$$..........
Cars are significantly heavier than they were “back in the day”. Pretty much every advancement in engine efficiency and aero gets eaten up by the extra weight for safety systems, power draw for the accessories, but the biggest factor is engines being tuned for power versus efficiency.
If required by regulators, the manufacturers could absolutely retune their engines and trade some power for better economy, but most people would rather have a higher horsepower number they never use than a higher MPG number they use every day.
@@mrb692 Yep, if people still knew how to drive we could do away with a lot of the added safety features. These days we need devices to help keep us in our own lane and hit the brakes for us, because we are too preoccupied to actually pay attention to the road. I miss the old days.
But yes, cars are much heavier these days. Gov't tells auto makers to add a dozen airbags, tpms systems, backup cameras etc. Also Gov't - your car has to get better mph also.
@@mrb692 thisss. I can totally tell by how semi trucks drink. We have at work some volvo trucks. A "21 460, "21 500, and "22 500. Now from 21 to 22 they added more power down low but it has the same peak. The engine underneath is the same, its the turbo and the max boost that differs. Now the 460 drinks 26L/100k, the older 500 drinks 29L/100k and the newer 500 with more down low power drinks 31L/100k. Also we had some rented dafs. A 440 2 axle that drink 18L/100k, a 470 3 axle that drink 26L/100km and a 530 that drink 30L/100km. Now as you said weight went up, size went up, tyre size also went up and we seem to be ignoring that. But just because we're making that power more efficiently we're making loads more of it and we're using a lot more power to drive. Back in the early 2000 you had Opel corsa with 50hp, now you have Ford fiesta with 200 and golf with 300.
Research "high mileage carburetors" , designs have existed for decades, usually the patent gets purchased by a big gas or oil company, then it gets put on a shelf and is never discussed publicly.
Wow, that is amazing and Soooo believable. I've heard to many stories of carbs that gave cars wicked gas mileage. It's possible that the velocity of the air coming through that small intake is so violent from the 8 cylinders sucking it through that it's atomizing the gas so well that it is burning more completely. VERY AWESOME. Oh, and you ROCK at this. :)
thats an interesting theory. you're talking alot of negative pressure due the volume of air that the engine is trying to pull through the carb, combined with alot of velocity. boiling points get LOWER with decreases in pressure.
Still gotta remember that the air is not being 'sucked' or pulled thru, but rather it's being *pushed* thru by atmospheric pressure limited to around 14 psi.
Thats exactly how the old "dresserator" AKA the sonic carburetor worked.
It all depends on how it is tuned, some want max power, others want drivability... some want a mix of both.
For highway driving, you don't need max power, once at speed you only use a small portion of the available.
If atomizing brings such big benefits then why isn't car engineering focused on that more
Damn Luke, you're getting 4 cylinder hybrid fuel economy, lol. I'm just floored at how well it works.
The carburetor is a mechanical fluid dynamics computer that can solve third order partial differential equations with very few moving parts. All the atmospheric variables are condensed into air pressure, which changes the velocity of the air passing through the venturi. This air velocity acts as a pressure differential measurement, and the pressure differential is what meters the fuel. It is a pseudo-closed loop control system, as the fuel metering changes based on intake plenum pressure, which changes based on RPM and throttle position.
I love carburetors. I have a couple of spare carbs and distributors just in case SHTF.
The addition of the controlled vacuum leak modulated by wideband O2 is absolutely genius. The elegant solution is almost always the right one, and your O2 system proves this.
Great job Luke, very simple yet clever. That mpg from a V8. Wow
Great idea. I think that motor just loved the carb/design combo you made. 41 mpg especially these days is well worth it, and doing it in 50 year old car
No doubt. 50 year old doing what a new car can’t. Lol
You hurdled federal mpg standards for current model year with disco era stuff. Nice.
Well, other than the arduino and the cellphone app. I'm wondering how much that part is affecting fuel milage.
@@TheComingCurse999 Its affecting it a lot, otherwise he'd be burning way too rich running down the road. At least he can modulate the AFR on it to optimize the most fuel economic scenario on the highway. Without it I'm sure we'd all see very poor fuel economy since it would be burning more fuel
The original VW Beetle (from the 1930's) got 38 mpg. Between that and this you can't convince me that the automotive & oil industries aren't deliberately screwing us.
They are screwing us. Oil doesnt come from dinosaurs. Its natirally created in the earth and theres endless supplies of it. There was a guy in the 70s that figured this out and the government wanted the patent but he wouldnt sell it so they murdered him. Big oil is the same as big pharma.
@@carfvallrightsreservedwith6649 A lot of people who came up with high mpg alternatives have been suicided.
Reminds me of a Ford Fairmont my dad had years ago with the 2.3 L carbureted four-cylinder with a five speed manual. It also got around 40 miles per gallon. That was all while meeting emissions standards and delivering power that was adequate for the time in a midsize car.
Still, a great project with clever use of modern close looped devices. Would be a good project for someone on the flats such as yourself who wants to turn an old piece of American iron into a fuel economy champ
This was an awesome and well-executed experiment, and proof of concept. As with any good experiment, let's examine the liabilities. Lack of power (to what degree, I guess we don't really know yet), and... what? A natural tendency to self-enrich as your foot gets further in. Is there a point where the control circuitry can no longer sufficiently compensate?
It kinda feels like this is the beginnings of the spread-bore carburetor- small primaries for cruise efficiency, and big secondaries for when you encounter a tunnel... lol
Exactly what I wast thinking.
lets go best of both ideas here. Briggs and strattion makes a duel venturie carburator for their vanguard series V-twins. its about double the size of what is currently installed on this 302. So even lets say you cut the milage in half thats 20+ Mpg MINIMUM. and probably double the HP. I have a 83 deville i dropped a 305 chevy engine in... time for some more experiments of my own.
A properly sized 4bbl with the dynamic ratio control would be the cat's meow. 45mpg when you want, 10 when you want.
I love projects like this. Im a tinker with everything type of guy and I think you hit the nail on the head when you did the white board presentation. I was thinking the exact same thing before you even said it. Good job!
Would be really interesting to get airflow measurements at the same speed with the four barrel vs the lawn mower carb. It would give a nice comparison on the actual airflow through the engine.
Many years ago I put a very small carb on a YamahaYZ490. It got very good mileage and made really good, useable power on the trail. My friends couldn’t believe it. Just shows that bigger isn’t always better.
Great idea and follow thru! I've always like the air leak tuning idea, just never tried it. Use it on a 4 barrel next, just to get stoic. 3d print a 4 barrel intake with a side lawn mower carb for the highway.
Dude, this has been such a cool series! I would almost convert my efi 302 back to carb if you were selling this as a kit. Awesome video.
Totally worth a check engine light.
@@fairlaneboy66 “check engine light” yup engine is still there and getting better fuel economy. EFI can take a hike.
Totally worth a blown engine because you run it too lean this is a really bad idea
@@markm0000 lol you can do the same thing with a efi and no need for all these stupid contraption
You could run as lean as you want with efi and a xouple of key stoke on a keyboard bjt it atil the dumbest idea evwn you cgonna end up with a blown engine
@@legros731 until you run 2 brand new engines on a dyno to compare this contraption to EFI engine wear you have no ground to stand on.
Higher velocity through the small carb should give incredible fuel atomization
but decreases engine efficiency since you're introducing MORE pumping losses.
@@hojnikb you are partially correct pumping loss is a real thing but it has much less effect than clean burn and a homogeneous air fuel mixture.
Smaller carb also means less air flow....... turbocharger next
@@Tooomasbiwden He's getting 40mpg out of an old 302
@@hojnikb Not exact. The real secret of such economy is that carb passing to engine much less air then it able to use and so need much less fuel. So it's a virtually 1.0-1.5 litre engine by air consumption with the same power - less then 100bhp. Pumping loses is not such big because it compensating on compression stroke (the only 1/4 or so of cyl volume is used - all other is constant vacuum).
My daily ride is an old 2007 Toyota Corolla , small 4 cylinders 1.8 liters engine . 4 speed automatic transmission. I can’t get more than 33 miles per gallon in the highway and much much less city only . You’re doing miracles there man, carry on
Great video and good explanations. Im an old-school carb guy. I rebuild them and adjust them all the time. The real magic is that its limited cfm limited your acceleration and the faster airflow did atomize better. Great job and very well done with the 3d printed. Genius using a controlled vacuum leak to maintain stoicometric.
Already very reasonably good! Imagine the driveability with a 6 speed trans and a better rear ratio, maybe a 3:23 to 1 instead of the 2:79's! I know, I know, you did this really inexpensively. Just thinking about the possibilities. Good job tuning this and making it work like a regular everyday car!
The 3.23 would reduce fuel economy.
Hahahahahhaaaaaa.
You try to justify lugging that monster cast iron block around, choked with a twine string, with fantasies of adding MORE weight and a LOWER gear?
I want you on the first mission to Mars.
The ONLY two LOGICAL choices are to place an engine in the car SIZED to the carb OR place two more on that intake and be ABLE to use the POTENTIAL of the engine when NEEDED.
I think you should refrain from being so EXCITED until you have a BASIC knowledge of physics and how they relate to the automobile.
No more this! or that! until you ask the right ???
@@CreeperOnYourHouse but 6 speed would help
@@Cody1526 Absolutely. The T4 toploader 4th speed is only 1:1. An overdrive would do wonders.
@@CreeperOnYourHouse depends on the TQ curve, its most efficient to drive a peak TQ, having a long overdrive cant drop you under that peak and out of the most efficient zone, he already only doing 2500 at 75. Diesels can do 1800 at 70/75 but there peak TQ is lower in the rev range,
This is pretty crazy. Maybe you could hit 50 by making some additional changes. A little upsetting when you are outdoing most 4 cylinders out there on mileage, although I'm not guessing the 0-60 is too hot. Although this project was kinda done out of spite, it's been pretty fascinating to see how well it's turned out. Goes to show that no idea is necessarily too ridiculous to try >>;=)
Not really when you consider you could do this to a Carbureted 4 cylinder!!
Very cool my man, neat to see you were so excited you were shaking. That's what the good parts of life are made of right there.
Maybe install an accurate digital fuel flow meter and speedometer and show us a real time MPG graph? Would be interesting. Thanks for the vids! 😎
Why would he do this to prove that he is full of shit and this contraptions doesn't work in reality
All a see is a bunch of gullible people in the comment
@@legros731 you mad? How would this not work? He’s made it pretty obvious he’s not screwing with us. He has no reason to lie about it
@@legros731 This channel doesn't have any content
@@charlesangell_bulmtl certainly 577 video is absolutely no content 🤡
@@wildone1312 lol you are the reason why lol
People really do believe anything that on the internet lol
If your so confident this work try it for yourself and make a video on how awesome this work
This, this is mind blowing. I'm wondering how well it would do in city driving. Considering how efficiently your setup works I'd think that number would be equally mind blowing. Talk to a patent attorney, today. Seriously. You are in the realm of GDI destroying tech for MPG.
Yah patent it and no one will get it after Mr. Elite buys you out after threating your life. Give it away and finally everyone will be free. Open source it the way to go. Vaporization has been around and their patented, and no one has one. Why?
Fast. Like yesterday before china copies it. Even though theyll still steal it even if he has a patent on it hahah
Please destroy GDI! As a tech and a customer I hate them, I try to buy 80-00's for the mix of simple and safe. The potential is inspiring!
Exactly a commuter V8 maverick making 22 MPG "city driving" would be impressive.🤔😳
@@kamiraanddie12394 Ten percent for The Big Guy
I'd love to see you use a metered one gallon tank to get actual mpg, but this is definitely an amazing experiment!
Yes I second this, I would love to see this