We Make 15lbs Of Boost!!! Supercharged 440cc Take 2
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- เผยแพร่เมื่อ 2 ต.ค. 2024
- Today we take another crack at our supercharged 440cc Duromax project. On the last episode we tried doing this with the factory propane carb and failed. Today we remove the governer, install some 50lbs valve springs, and put on a 34mm Mikuni carb from go power sports. We ended up making 15lbs of boost so its time to fully tune out this engine. Stay tuned for the install of this engine on a go kart!!!
Parts Used On This Build -
AMR300 Supercharger - amzn.to/3WKle7f
50lbs Valve Springs - bit.ly/3cYYj0x
Duromax 439cc Dual Fuel - bit.ly/3BQVKuR
Performance Jet & Air Filter - bit.ly/3O12rQ0
34mm Mikuni Kit - bit.ly/2PeTnL1
Mikuni Adapter (used on supercharger) - bit.ly/38VQ3Li
Mikuni Adapter - bit.ly/3BMRNYv
Build Your Own Header Kit - bit.ly/2NDPdM9
Billet Flywheel - bit.ly/2VR3lEw
Billet Rod - bit.ly/2IOKQue
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Check Out Go Power Sports for all your Go kart needs! bit.ly/2viX9vP
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My son and I got the 440 duromax engine last year. Been trying to figure out how far to go with it. I don't think we'll go this far. This will be our first build, and your videos have provided a lot of info and entertainment. God bless you and your family
I got massive power gain, without going crazy, on my 200 cc clone “stock block,crank,cam no governor of coarse
I port &polished head . Note:
match your intake (inside dimension) to the size of your intake “Valve “ for max flow !
A 400cc you may have to buy two carbs but my 212 uses
22lb springs w 1.3 ratio rockers stock push rods work fine for this build !
VM 22 carb on max setting ( turned wide open )
And headers
I know I’ve doubled my power easily!
I think you will be satisfied w the increased power
Valve springs or ratio rockers make a big difference for cheap
With all the engine parts and tuneing vids out there it's time to start a mini bike drag race series 212-225 cc first class 420-460 second class and turbo /super charger unlimited class it going to be affordable and will bring more people into building these engines and have fun racing.great to see you make this 440 tune👍
212-263 there's some crazy 212 builds up to 225 sells it short some of them can compete with 420's depending on the build most likely high octane builds.
I'm surprised your comment didn't get more likes that'd be mad popular in the Midwest esp on dirt too 🤤😔
this category of cc's are more common in my island philippines on small boat racing.they cant afford boost like supercharge and turbo charge.but they can manage to pull out 120kph on a 7hp single cylinder engine.imagine if they can afford this kind of stuff.
i am gonna try my best for them to watch this video
You have to put a blow off valve or some type of air release valve between the blower and engine. When you let off the throttle its still ramming air in the motor and causing slow decel
Problem is when the blow off valve opens you will get fuel blowing out of it...
Not with a draw through set up . Blow through yes you have to have a blow off. Close the carb no boost
If the carburetor is mounted on the intake side of the blower. there will be air/fuel mixture between blower and engine...
This is a badass build man. I'm looking forward to the next video.
about this engine that using supercharger
my advice, Static Compressio Ratio, down to 7:1
boost to 0.8 BAR
make sure to recalibrate ring piston gap compression 1 and 2 for below 1 bar
and make sure, camshaft duration are not to wide, cause turbo / supercharger hate really wide camshaft duration and high overlap profile
hope it's help
Delarto carb. Something with a accelerator pump.
Random question, are you using a new mic? Or are you using adobe's speech enhancement?
I think u can get a knock off 400 ex carb for like 50 bucks it should work but I would say a fcr slide carb would work because it has rollers and push pull dual cables like say for a trx 450
Whew! That made my few hairs stand up on my head when that big block rev'ed hard with boost !
I wished you had run that propane carb as a draw-thru. I believe your results would have been a more positive result. Hope for future propane boosted small engines. God Bless ya'll !
Make sure to open up your ring gap or your going to have issues, and I would go at least one step colder spark plug, and close up the gap on your plug a few thousands as well. Do you have any access to ras gas 100+?
Sweet!! Grease or oil those gaskets. It helps them come off without ripping and they seal better I think. Just don’t it to the head gasket obviously lol.
Just make a tool that bolts to the rocker stud to remove the retainers, no need to remove the head.
(make it out of an old rocker 👍)
damn, I just commented the same thing! I guess I should go through the comments before I open my big mouth! lol..
It will produce less boost under load. Free rev at 15 psi depending on gearing could get it down to 5-7psi
Rlly ? I figured the opposite
Don't think that how it works in a draw trought setup
@@zanderx7 in turbo aplication yes, in supercharger no, i build couple years ago a GY6 150cc with supercharger, on free rev it was pushing over 28PSI, under load it was like 14PSI
@@prodzektownia oh okay. That’d make sense as I’m much more familiar with turbos lol
@@prodzektownia watched your first start video, dope 👍
Let’s see it on the dyno!
Finally supercharged another engine.
I've thought of something similar. Making a top plate with 5/8" pillow blocks on top of it. (Essentially a jackshaft with v-pulleys) And fab a bracket for the supercharger to get it closer to the intake port. I wonder if a Tilly carb would work or maybe a Dellorto or a single Webber
Dang that made 150 horsepower
Love video but don't see very many people doing it
I see your bridgeport there. Should grab a lathe. Could have pulleys and fasteners in a few hours instead of days. If you wanted to you could 3d print various sized pulleys in NYLON and experiment rather cheap with ratios for ideal boost curve. You could do quite a bit adding those tools to the arsenal. Subscribed!
Alternatively you could bleed boost off by gating the intake like you would exhaust for a turbo. Works in a pinch. Not ideal imo.
Willet Dino 50 horsepower at 10 lb of boost ❓👍
I wish you could do a draw through propane setup now… it’s the reason I ended up here
Throttle body and efi would work.
Awesome setup once it gets built, and I'm so excited! 15psi is definitely the danger zone. One question I'm wondering about is how a 300cc supercharger manages to double atmospheric pressure (14.7 nominal + 15psi = 29.7psi actual) with a 1:1 ratio on a 440cc engine. I'm thinking that you have to already be underdriven somewhat. I'm all about that party pulley life so I say build the snot out of it and be sure to super size that ring gap and add head studs and a copper gasket to the usual billet parts and run it on 110 gas with a bunch of extra timing and a cold plug. What about a giant Tillotson carb? Put it on a mini drag bike!
Its a 4 stroke so in 2 revolutions of the crank it will draw its displacement
Pressure is just a measure of restriction. It’s not 100% efficient.
I agree it does seem high and that air going in is going to be HOT. I'm surprised at 15psi that he wasn't getting detonation.
this series is INSANEEEEEEE i love it and im going to try and copy your setup to an extent how much has it run you so far? also when will the next vid on this thing drop?
I'm not sure whats going on with your mic but it sounds like you have autotune or something.
Yeah it’s software doing it. I got it fixed now.
next time doing valve springs get a pressure regulator and line with same threads as spark plug and run about 10-25 psi into the cyl should keep the valves up against the head and make the swap more efficient
Wouldn’t having a fan blow on the engine to simulate air flow while driving assist in getting a better reading?
Man, wish that was on the dyno.
Are you concerned with the added spark timing when you switch to the billet flywheel?
would like to see a fuel injected small engine using like a low end holley or haltech fuel injection setup on a v-twin setup along with boost. in my opinion it would probly make decent power, have the low end drivability, a long with data logging built in.
The microsquirt ecu was built for that
old school phazer has 34mm butterfly style mikuni.
I'm currently putting together build plans for a 418cc Diesel 4-Stroke powered, AMR 300 Supercharged mixed use trike.... wish me luck.
First off retard the timing. about 3/4's of a degree to every pound of boost. Either by offset woodruff key or different flywheel. Second use something like a FCR carb (From a Yamaha YZ250F). They have rollers on the slides. And it gives you all the adjustability in the world to tune it. Just put a blank plug with silicone on the throttle position plug to keep it clean. 3rd use a colder plug.
The carb on my Yamaha Warrior, has a flat slide,
and downstream from that, a butterfly. Don't ask
me why. Got the quad from my old boss, needed
a battery, carb, fuel petcock, and a front brake master.
Quad cost me $200.
Have no idea why the carb has both the flat slide,
AND a butterfly. No, the butterfly is not the choke.
It's on the other side of the slide. Doesn't have a
"choke." Has an enrichment circuit instead.
(Replacement was $40, on the Jungle site.)
steve
"VW carbs" might not be ideal for this application. Almost all carb setups for the flat 4 are downdraft. The last American 'production' 1bbl carburetors were designed to supply about 60hp worth of air and fuel to a 4 cylinder engine. The engines you see with carbs on each side are 2bbl Dellortos or knockoffs.
Maybe an older butterfly carb for a 1000 to 1340cc Harley engine might be a preferable option.
Can i do the same setup on a 212 with a billet flywheel and rod? i already have a 356 cam and 36lb valve springs including a 30mm PWK motorcycle carb and cast aluminum flywheel. The Flywheel is not stock.
Can we get an updated video on this build 🔥🔥🔥
i 2nf in motion😉😆
It needs a bypass, even a 1/2" ball valve will work to to bring the output to the input of the supercharger toto reduce boost at idle , then close when the throttle is opened, possibly open again to regulate boost slightly, maybe 1/2" tubing and call val it doesn't have to be open all the way, maybe 1/4- 1/2 way open at idle, then close as the throttle opens, and possibly open at full throttle to regulate boost or while cruising not needing full power! A small carburator throttle valve would work great for this, maybe a weed eater carb with a hose barb fitting nade to fit and seal both sides. Only
Using the valve. And sealing the fuel lines. Then a Arduino and servo can with throttle pedal sensors to regulate the bypass, with no throttle while going fast down a hill it will be better to have the bypass fully open! It will make it much easier to drive!
Imagine a supercharger from a 3800 Pontiac or Buick on a v-twin, (*they have bypass valves also*) it would require a gear reduction to keeping the heads on the engine, it would probably make all the boost at idle, then throttle and boom, it would be about 3000 cc too large but a 4:1-5:1 reduction should work , but one of these would be plenty for a v-twin!
Imagine one on a micro truck ppl are importing, slightly modify the engine, polish the chamber and pistons, port the heads, add a supercharger, maybe two,(three running 2 into 1 to make a compound setup, but a turbo and supercharger would be cheaper, with the supercharger working near idle, the turbo afterwards, make 25 psi, easily doubling the HP, a micro truck making 50-100 hp😮
You said your carb doesn't like mid speeds. Move carb away from the charger some and build like a surg box between the carb and charger. I'm thinking every time a lob goes by the opening it has a break pressure change.
Keep up the work. Love watching you guys.
i dont think that "blower" is actually off any kind of vehicles. its identical in every single way to the 55 gallon hand crank fluid pump i just bought at work.
Update I have a predator hemi max performance 459 cc and I bought the exact same AMR 300 ter supercharger my plan is to run somewhere in the neighborhood of 6 to 8 pounds of boost And let me correct myself by saying you need a Recycling bypass valve or at least that’s what I’m going to use you can put a blow off valve but that’s if you’re running higher boost levels mainly also I’m going to add an inner cooler probably copy you and go with the 50 pounds springs port and polish the head head into a stack kind of like Semi exhaust with flappers got to keep that rainwater out and since nobody makes any performance parts for the most part for these engines as far as billet I’m going to a machinist and going To bring him a chunk of billet for a connecting rod piston and a flywheel definitely going to have the caps made with a lot more meat but as far as a carburetor I was thinking something like a small single barrel and modify it Into a blow through carburetor with all the fixings Wideband O2 sensor boost gauge Boost referenced fuel pressure regulator fuel pump and as far as connecting it to the carburetor I’m going to fabricate a box shaped hat(Basically to simulate pressurized atmosphere) Also it’s pretty important where you put your Bypass valve I would just let it dump out into the atmosphere but figured I’d give it a little more to take stress off the supercharger I’m pretty sure with as low of boost I’m going with the stock timing should do just fine maybe throw a different spark plug along with some ARP head bolts and ARP studs for the manifold and exhaust my ultimate plans for the engine is to utilize a four speed manual transmission out of a Chevy Luv as well as the driveline and rear end get a narrow rear end and shorten the driveshaft then I have a craftsman lawnmower I’m going to rob parts off of build a cab trying to be as weight conscious as possible but I have a craftsman trailer as well I was going to use as a truck bed that’s where I’m shooting for anyway still got some kinks to work out and I realize that it’s going to be quite a long road ahead of me but I definitely think I can pull it off then as a sidenote I have a 79 Chevy Luv I’m swapping in a small block 350 with four bolt going to get some aluminum heads a good intake cam board it out possibly turbo I’d like to be in the 400-550hp range a turbo 350 transmission put a little 10 Bolt out of a S-10 but ultimately I have a 14 bolt that I’m going to narrow and use convert the rear suspension from leafspring to a 4 link suspension and ditch the front torsion bars for some coil over springs in the front should be a nice little sleeper and make a dual exhaust with a cut off valve throw a couple mufflers so that way I can trick people into thinking all I have is maybe a V6 at best open up the cutoff and blow their doors off God bless and have a good day man
Mikuni super BN they do make a 34 mm but the 38 mm flows closer to TM 34. Bullfrog makes billet adapters and velocity stacks for BN carbs.
Wow id imagine your running forged rod/piston with conservative cr ? Which not sure what these engines have stock, but this would be cool even on a small block setup like 8-9hp ghost motor, cool stuff man 😎
Why do you think the supercharger would cause a slide carb to stick?
There are plenty of engines using slide carbs with just as much pressure differential as your supercharger.
Every engine sucks( well causes pressure drop at slide causing atmospheric pressure to blow air into engine).
The IR temperature gun does not work on shiny surfaces like the intake pipe, put a piece of black tape or something on the surface you meassure.
It also is not accurate at measuring the exhaust temp from 1 meter away, the measuring area is mostly shown on the gun, the exhaust can be 700 F and the air around it 100 F, the gun will average those temperatures and show the 400 F.
Is there a reason why you never use a tillotson carb ? Competition carburetors sells some badass tillotsons for 196 clones all the way up to big bore 4 strokes crf450 to a gm500 and also you don't have to screw with jetting on a tillotson
Alcohol run this on methanol or ethanol
It should cool down intake charge temps and reduce the chance of detonation plus A MORE POWER BABY
I have a Coleman RT200... Why does your bike have the chain on the wrong side? Do you live in England?
You can't get a good reading with an IR temp gauge on polished aluminum. Just give a spot on that tube a spray with flat black paint. That will give a better reading.
Put bigger cam in it boost will drop .. boost is a measure of restriction through the engine
How do you make the pully for the engine to run the supercharger pully ?
Where do you buy those parts?
You need a plenum between head and the blower, 4x size of the engine CCM
You need to build a tool to remove the valve spring without having to take the head off. With a duel cable throttle one could control a butterfly valve.
I was just going to question why you'd have the carb downstream of the boost until you said something.
Yes but won't the fuel going into the blower start eating away the seals
I seen over 15psi bud lol more close to 18...it was def over 15 tho, that's wild....full sendddd it
Hey you need a boost relief valve. It looks like your boost spices were when you closed the throttle and the boost has no where to go. Not at wide open throttle. This is normal for boosted engines. Lol and water systems. If you close a water valve at the long end of a water line from full flow to closed to quickly it can knock the valve off by the surge of water. I think that's what you are seeing here. So try that before swapping pulleys. Easy to test to. Put on your dyno and run it at rpm without closing the throttle and see what boost is recorded thru the rpm range
I’m not sure the model but you might look into a S&S carb. Can’t wait to see this go on to something!!👍🏻
Your intake tube is to long and the fuel is falling out of suspension, the intake tube I would change and move the blower and flip it 180 degrees so the intake tube can be almost strait into the motor with the exception of the curve needed to keep the blower in line with the pulley! Shorter the better. Look at an 6-71 or 8-71 blower on a chevy small block and there is no throttle response problem there when ya mat the throttle as the blower is shoving the charge strait into the port of the motor after it draws the fuel threw the blower!
Rocky Mountain ATV get ya a Tusk Stud Removal Tool no more of that double nut stuff and twice as fast for $30
Try a harley 883 sportster carb. It's a butterfly with the secondary plunger
Put a blow off valve set it to 12psi
You should have stuck with the propane. You just boost reference the propane diaphram.
The only reason you need a carb for LPG (propane) is for the butterfly of the carbs I used to use a blow through on a Rochester carb on 305 chev
Great part 2. That supercharged engine has enough room for intercooling. Keep the boost high and intercool. Can the intercooler be chilled will the liquid propane and preheat the propane fuel at the same time?
Consider running an External Wastegate to control boost? Could bleed from right behind the sc to just behind the carb?
Idk if i trust that gauges accuracy lol its jumping like a cheap watch and i dont think that cylinder can take 15psi if it is accurate
Interesting, what about upgrading a Wildcat 460 engine !!!
The intake pipe temperature will have an erroneous reading using a IR temp gun due to emissivity of shiny metallic objects, to get a more accurate reading you can apply a black sticker or paint onto it.
Old honda 2wd race quads and the bigger cc came with butterfly/accel pump keihn carbs
That engine has a sweet sound. I bet it's real throaty under load. Also I would test under load before changing anything
Is it possible to run a vertical shaft lawnmower engine in a horizontal position and use it on a go-cart ??????????
your draw through setup is bogging because most small engine carbs dont have accelerator pumps.
150cc or larger scooter carberator could work. My 50cc had a butterfly carb so the larger one's should also be the same style but bigger
A 400 ex carb is 35 mm and it’s got an accelerator pump a butterfly and slide
Titanium nitrate would be I think would be a good coating for a small engine it supposed to reduce friction
The fact that u could of saved that side cover gasket n just decided to rip it off made my stomach turn.
Where’s the blow off valve? you know it’s hard on the blades of the supercharger when you let off the throttle as well as could bend throttle plate when yo don’t have one
If you're going to put this on a go cart and that intake pipe was really hot to the touch you should be able to put your hand on that at maximum RPM and it shouldn't have any heat in it at all you're gonna have to do in intercooler And if you're going to run it on a go cart you can use a dirt bike radiator for an intercooler
Would love to see a road to hp video on the big block. And dyno video on this engine. Could this engine be competitive in uas racing?
Cool
Boat motor carbs should work they are butterflies and get fairly big too. Mike
Would like to have seen the factory propane carb in the intake side of that supercharger with propane
shoot air in the cyl design a compression tool its easy takes 15 minutes BOOOOOOM your done !
I would look for a single barrel Ford from like the 70s 4-cylinder
E85 dont worry about intake temps.
I wonder if you could install a stiffer slide spring to force the slide down under pressure from the supercharger and find the right spring tension to return the slide but not be too stiff on the throttle
simply replacing the stock return spring with a heavier one or possibly machine a spacer and call it a day
Just need to spin the blower slower.. Yamaha big bear style carb.
I blow through turbocharged a 454 on propane. It worked great. You could do it with this too
What do you do in regards to the ignition as far as retarding the timing also why are there so many haters out there that think that a single cylinder can’t be supercharged or turbo charged
Friendly heads up laser thermometers do not work on polished or reflective materials. Typically the emissivity needs to be around .99 (nearly black). A thought is to add a piece of black duct tape on the intake for laser to monitor readings
My pressure canner now has black tape on it,so I can get temps.
steve
run methanol. Cooling problem solved, detonation from no ignition retard under boost solved too.
A yamaha 440 ss had a butterfly carbie i think it was a 34 could work for ya
Consider a Mikuni Super BN. It was used in Kawasaki and Yamaha PWCs back when they were twin 2-strokes. They have no float, kind of a cool setup.
man you need to dyno this thing. I wanna see how many horses this puppy makes but its probablly a lot
Maybe it needs a relief valve being a positive displacement blower?
Hey beard that spacer does no good now that the carb is in front of the supercharger, just throwing that out there
I really need you to say “propane and propane accessories”
Just wanted to know if you was hiring anyone would love to come work with you