I wonder if the Briggs company will see this and use it for their commercials to show just how strong their little engines are! Hey it's all about reliability!
+The Mechanical Koopa I am currently kinda sponsored by them kind of in a way, starting with the larger model which is going to appear as soon as this thing blows up, at this point who the hell knows when that's going to be. But I have made some very promising developments with transparent materials. I have some really really cool stuff in store for the near future.
Cool video, but I️ have to disagree. Briggs L heads have always been plagued with problems. A sample size of one can’t prove much. Where did the oil come from on the ground? Closure plate gasket failure?
i essentially had this shop teacher (Not him, but the guy did crazy and fun shit in class, only class i learned anything from, and the only class that tried to teach me anything of use) and i can confirm, it was amazing.
Does shop exist any more? When I was in high school we actually had auto class with a big garage that had 4 lifts and a tool room full of every snap-on tool you could imagine, it was easily the largest chunk of the school's budget and certainly the first thing to get cut.
@THE FRENCH BAGUETTE nitromethane is racing fuel it's similar to Dynamite like nitroglycerin it carries its own oxygen molecules simply put it makes about 2.3 x more horsepower than gasoline but with nitromethane you can pump eight times the amount of fuel into a cylinder than you can with gasoline simply badass stuff
You're highly elevated crankcase pressure is blowing the oil past the seals. But watching this thing run Full Tilt Boogie I can't believe what I'm looking at it defies everything that I thought I knew
Methanol is thinner than gasoline from a molecular standpoint. It leaks past the rings and milks the oil. That's why you change the oil after every time at the track on a methanol car. Essentially that oil was mixed with methanol/nitro which thinned it out.
9k with load on strait meth can lift the cylinder off the block , just below the head bolt bosses, got a friend that has one as a trophy in his garage . Built not bought . They reached the blocks maximum hp with raicing block/head girdle ( also stretched when the cylinder failed).
Man, you put so much effort into these videos and they turn out amazing, you could've stopped the video after the engine stopped working but you still went out and did it. Amazing job.
I love it..Im sitting there thinking "turbo charge it if you want to hurt it" and you literally said "the next step, im going to turbo charge it"..cant wait!
My family owns a hardware store in small engine shop my dad who just turned 76 yesterday is hooked on watching this channel he asked me every day about it we're certified Briggs & Stratton dealers flatheads forever baby!
I can only assume the oil came out of the breather, the extreme rpms you were hitting were probably building up crankcase pressure forcing the oil out he breather tube
That is what I thought, too. That rectangular piece the hose comes out of is directly behind the valve stems and all there is, is a porous metal mesh in there, if I remember correctly. (Been decades since I have seen the inside of one).
I ran a 5 hp Briggs motor on nitro that was on a go-kart when I was 12 years old. I ran into the issue of fuel mixture problems. Had to make a custom intake runner & carb. Also made a custom bracket to advance the timing. it worked and didn't destroy the engine until I revved it a lot and starved it of fuel. Basically never finished it but I bet if you could keep fuel in it and keep it cool it would run ok for a while. Also, need a billet head as it blew the head gasket a few times and a way to vent the crankcase as the nitro is causing a ton of blow by the rings and is why the oil is being literally blown out. Super cool project and makes me want to try it again.
marko Helenin Unless the explosion pressure wave is super sonic it is deflagration. Detonation is super sonic deflagration is sub sonic. All combustion in engines like this or your car or whatever is deflagration. Tnt c4 missiles ect make detonation. Kinetic energy impacts are always detonation because everything is already super sonic Buy a dictionary or look it up on google.
Yes I know all this, I have read 12 courses of chemistry and physics. Thats why I wrote deflagration but it was almost as fast burning as fuel in some (FAE's) fuel air explosive mixtures containing isopropyl nitrite.
Props for all the effort you put into this video. Even though it didn't blow up, you got some insanely good footage which made all the hard work you did worthwhile.
I just can't believe how fast the briggs engine ran! You must hook up a rev-counter when you do the turbo run, just to see how fast it will go before the conrod snaps!
Diesels require a much higher compression ratio and I have a feeling that those little acrylic heads wont be able to hold the compression. Besides, they aren't really that interesting compared to normal gas engines. They would look the same, but diesel doesnt require the spark to be firing every power stroke. Diesels only need a spark when they initially start.
Nitro is a highly compression sensitive fuel so if you have enough compression like at full speed and enough heat in the engine it could run without spark. Or at low speed with enough heat same applies. They also don't always have 50 degrees of timing in it. I can send you to runs I have found in my travels that are pretty cool. It shows fuel curve and timing. Really cool stuff. It also has its own oxygen so you can burn way more of it. I'm amazed at how well it ran. This is my new favorite video on TH-cam
Nitromethane isn't as dangerous as it might seem. The reason thouse Top Fuel engines occasionally explode has more to do with HOW MUCH nitro they try to burn at once rather than the fact that it's nitro. An ordinary engine can run it but it has to be tuned property and the additional stress on parts needs to be factored in.
177SCmaro It could also be that additional oxygen atom added on to the petro chemical string. Education is priceless but a new motor for your car will cost you a few thousand bucks.
Its about time someone realised that the nitro methane only provides the engine with more oxygen into the combustion chamber. The top fuel engines are only able to produce more power through careful tuning of the engine through compression rations, large enough combustion chambers plus heaps of fuel which includes the energy included in the hydrocarbon part of the fuel, separate from the nitromethane. The only way any engines can ever produce heaps of power is by getting as much oxygen onto the combustion chamber, plus the appropriate amount of hydrocarbons to burn the available oxygen. Simple really, as long as the engine can hold together with power that it can produce.
This is amazing!!! After all that abuse, that little Briggs and Stratton engine held up nicely! It's shockingly reliable, durable, bulletproof, strong, and crazy for a lawn mower engine to withstand nitromethane like this!
When you turbocharge it, you should drill out the main jet in the carb to increase your fuel ratio (use the main jet hole cross sectional area in ratio to the Venturi minor diameter to get your fuel flow increase in the ball park). Nitromethane has a much wider tuning window, but you still need at lot more than gasoline to get the big bang you're looking for. Loved the video. I'll be looking forward to your turbo video.
What a great advert for B&S! and I love it. Guy goes into back alley, nails an anvil straight into the tarmac, clamps a plucky little engine right onto the anvil, and destroys just about all else but the engine! - Only in America..... Don't you just love the red, white and blue?
(using my best Chicago accent) Well, there's oil everywhere, it's not runnin' and idk why, but let's try putting a stick of dynamite and see if we can get this thing to blow....
I really appreciate this video! The fact that you ran 50/50 is great, and you can see how cleanly it burned as proof of the methanol chemistry. Also, you can see how big an effect additional timing has. This was really cool!
This is pretty amazing, and an excellent unintentional (?) advert for the bomb-proofness of B&S engines (which clearly ain't no BS) on top of all the countless examples still ticking away in 50+ year old lawnmowers around the world... One part I found both satisfying and surprising was how, at least on the bench, it sounded rather like a miniature top fuel dragster engine during the pre-run burnout, most unexpected for something so small. Interesting that the change of fuel could have such an influence on how an engine *sounds* as well as runs. I had thought the difference in sound between e.g. an automotive petrol and (non-turbo) diesel engine was mainly down to the structure, how they're built and how they produce combustion, but maybe it was simply down to the fuel and how it burns all along? (Also, what capacity is the cylinder on this, how does it compare to the individual chambers of a dragster? It looks a little larger than any piston I've handled before, or at least equal to them, which pegs it around 400cc if it has the same stroke as the engine I'm thinking of... I expect a typical funny car has larger cylinders, but, could be wrong) And what framerate were you recording at this time? It'd be nice to be able to work out the ultimate rpm. Daresay it could probably be done by ripping the audio and just counting off the cracks against the timeline in an audio editor, but, hey, if you've got a high speed camera, may as well make best use of the footage. (Where do you even get all that stuff, and the clapperboard and pro grade regular speed camera? Side project of a TV studio that utilises a lot of high speed footage?) Tempted to see if I can get some nitro now, give it a go in my bike... not for extra power or revs, just for the sound. Base model 125s have a rather disappointing sound anywhere except in the saddle ... when you're on top it sounds rather sporty, but when another of the same model passes by it's a combination of sewing machine and wet fart. Be nice to have the outside sound match up to what reaches your helmet just for once. Though, I do need to perform some remedial work on it first... might be smaller capacity but it puts out about 3x what the B&S claims (and 3x the revs, though not simultaneously), and is somewhat more highly strung and fragile to go with. Also got a mystery oil leak from somewhere other than the head gasket, and the carb could do with a tune, along with other non-engine faults... NB you said it burned slower than gasoline, which is what you'd expect for ultra high octane race fuel, but the flames in the slomo footage sure seem to burn out rather faster than the regular gas did, even though it seems likely it's been slowed down even further than before. Is that just because of the increased spark advance, or is something else in play? Anyway, even if the ultimate destruction didn't occur, the footage of the gasket blowout was definitely super cool, and the entire video log of the attempts has been fascinating. I'm sure the turbo attempt will be even better. Keep up the good work :)
Krivulda...... while that may be partly true... the main problem with running "pop" (as we call Nitro in drag racing)... IS, Oil Dilution... and of course, oil level increase along with it. Briggs engines still (even though this one is an older model) use the very simplistic (and Antiquated) "splash" method of "lubricating" the engine.... so any increase in oil "pressure"... is confined to the crankcase and as the oil level increases (from dilution) it also decreases the air space internally and as the oil becomes thinner and thinner it Will find places to relieve that pressure and thinned out oil through every orifice that it can.
yea, any old wka or gocart racers will remeber dumping the light gray goop of oil after each race. Start with 1 litre, end race with 1.5. We used to run large external breathers/catch cans that recycled back into crank. Would be interesting to see how many bars of pressure where kicking around in the crankcase.
Just fun and interesting. As someone who has destroyed many B&S motors over the years building everything you can think of, these motors are incredibly well built. Thanks for this silly, yet fun and like I said Interesting to watch. Thanks, I'll watch some of you other stuff, thanks again!
Fuck that i go with 2 stroke engines. How ever i love destroying 4 stroke briggs and watching them self destruct. but the hold up fine with xd-100 2 stroke oil rigged up for total loss oil injection as illed my free briggs withxd-100 2 stroke oil. they are nice and offer a 2 stroke. but i rune xd-100 in there 4 strokes as well. they hold up as i rev the crap out of them.They are crap 4 strokes that i love to destroy
Cool! I once had a Briggs and Stratton engine on a old lawn mower that refused to start. Of course lets try some Nitromethane found in model airplane fuel?! I filled the tank with model fuel T-100 or something like that and it started right up and I thought maybe I can just mow the lawn with this fuel. I revved it up a little than WHOOSH----the connecting rod shot straight up punching a hole in the top of the engine. Goodbye lawnmower! My experiment failed but I sure blew up the engine!
I read an article by Bob holler on the allpar website about dishing your pistons to put more air and fuel on the exhaust side of the Piston because the flame front would travel faster in that direction. It's amazing to actually see it happening and watch the swirl of the flames as they travel through the combustion chamber.
YOWZA!...I'm goin' out TONIGHT to buy a Briggs!...that thing was just a little past design spec before the head gasket let loose! As to the leaks, I know for a fact that methanol eats Buna and rubber...I think only Viton seals will hold it. There was prob'ly a good amount of blowby which allowed the methanol at the crankcase seals...valve seals also prob'ly failed...or the crankcase seals just got physically blown out. Your nitro also tends to eat things by oxidation, being that it's the source of extra oxygen that makes for the crackle you hear at the dragstrip.
Hey man, I thought first, a typical show of an American ´I am the greatest´ guy. But what you are doing is really great. It should be shown to all students ,who are in education for machine development. Congratulation for that. And a lot of respect. Of course I am now a fan of your videos. Keep going.
Nice job Matt. See if you can buy an aftermarket magnetor for that engine. I am pretty sure they make them. Nitro needs a LOT of spark energy to get a complete ignition, you're right there. But it also needs a longer spark duration to pump a lot of heat energy into the system. Nearing full throttle, you began getting near that energy threshold. If you had a hotter spark with a bit more duration, I think you would have it. I will say.......adapting an MSD 6 redbox to this and adding a crank trigger to fire it would do it.
Not really as much as you'd think. Nitro doesn't act like most other fuels since it carries its own oxygen. Fuel altreds run no forced induction and run modest compression. They gain their immense power from harnessing the power of the molecular oxygen available. The issue is giving it enough spark energy to break that bond and liberate the oxygen. Fuel motors want two things, drenched in fuel and bathed in spark and timing. There is a saying, if it wasn't for the magnetos, fuel motors would be fuel pumps. Literally, in order to get power out of them, you need an insane amount of fuel. The amount of fuel that makes you think "No way, I am flooding the cylinder!!!" Nope, you're just getting it where it needs to be. Give it the right amount of spark and you'll let the genie out of the bottle.
not sure of the total energy of the spark, but a modern gas engine should be around 40kV to the plug out of the coil @ShadowPBPBC from what i know you need higher energy spark to light bad mixtures easily
Poor rings couldn't seal the compression enough thus allowing compression into the crankcase and blowing oil through the breather vent and the oil seals. Cool video!
My dad bought a Briggs & Stratton lawn mower when i was 11. A year later he taught me how to do the lawn. Im 48 now & i still drive to my parents house to cut the grass. Been cutting it for 36 years & still with that same exsct lawn mower. Still starts up 1 pull most of the time. No repairs either. Just oil changes, spark plugs & air filter. Although next spring i gotta new rear wheels for little Bertha
GREAT VIDEO!!! I think the oil came out of the crank case breather and or maybe blew a seal somewhere...I would still use it on my GO CART No Problem , with the Nitro!!! Thanks for sharing...
All the other fuels you've put through this engine explode with a dull flame-y, fwoosh-y "boom" compared to nitromethane, which explodes with a sharp, almost metallic-sounding "crack" and the flame almost--nay LITERALLY burns white hot at 12:11. Slow the video down to half speed during the slow mo bit and the sound is incredible. Watching the combustion fly out of the melted spacer at the end was like watching the finale at a fireworks show, and just as dazzling. What gets me is how the metal spacer failed before the acrylic head did.
Nitromethane gives less energy than gas by about 1/2. But you can put almost 8 times as much in with the "standard" amount of air that a cylinder pulls in and get a "good" mix. That ends you up with about a 2.3 times the "Bang" that you can get with gas for a given amount of air. It also runs about 800 deg. F hotter than gas.
LOL... whoa !!!!!!!... your question will be answered and you will be blown away, We started filming the follow-up to this episode and I was beyond amazed at how much power this thing made with the nitro alone ( hint,hint Dyno ), then I bolt the turbo and nitro and holy hell .. it was nuts !
My boss did that with an old lawnmower and mowed down 3ft grass no problem. Thing also would shut off until he crammed it right into the thickest grass. It never did restart after that though. Lol nitro is some volatile stuff. Awesome video.
Great video Dude !!! Nitro gets REAL Hot, the combustion chamber on a top fuel car gets 7,000 F and burn's between 9 to 11 gallons per run. Your right about the IGN , nitro needs ALOT of spark , there magnetos has 44 amps and they use 2 of them. LOVE your Dog as well !!...................we what to see more more more !!
it seems that the oil is leaking through the crankcase breather. You can block it, but it's dangerous (the gases within the crankcase can ignite and explose). The best way to counterpass this is to mount a tube form the breather to a "catch can" so the oil flows inside a can so you don't make a mess and the engine will still be able to breath normally
haha ... thanks man, Appreciate that. not sure if I'm feeling the new show, it feels weird without Adam and Jaime, I like it a little ghetto and grimy anyways. maybe we will do a joint episode one day, science and discovery, that would be interesting.
Funny thing is Im watch in them rn the new hosts are 2 guys with 2 skills designing and engineering. Jamie and Adam had it all including the opposite attitudes witch made it all the more entertaining
Now put that thing back in the snowblower LOL. Makes for an easier winter. It'll shoot snow over your house and onto someone else's yard lol. I wonder how far beyond the 3hp it was putting out. Likely 20 hp. Thanks for this.
Oil is probly due to over pressurization of the crank case because of the higher blow by gasses. Can you get new rings for it? If you can you should custom grind them for nitro/boost application to see if it helps. With it being an air cooled engine you should also think about putting a fan near it to help cool it before it seizes up, especially if you're gonna turbo it. Can't wait to see more vids, keep it up man.🍻
Warped Perception, happy to help. Feel free to bounce any ideas off me. For reference I'm a retired F16/F22 crew chief, prior ford technician, turned mechanical engineer.
1320crusier, a blower fan would do a better job at dissipating the heat and less time consuming. Also, the contact area of a tube would be too small to be efficient in square fins. If he had more time and resources he could possibly water cool it with custom fabrication, but it would be a whole new project in of its self.
Its simply the craziest option I could think of. Thats all :). I believe the most efficient way to air cool it would be to duct the air through the fins or to attach some high cfm computer fans to each side to pull or push air through the fins.
As you may know, nitromethane burns at a much lower temperature than gasoline, hence why topfuel cars have no coolant passages in their block, the temperature of the nitromethane regulates the temprature. Awesome vid and I'd love to see you try 90% nitromethane!
That's a great point that I did not think of, you MUST give me your opinion on the subject in the next episode, I had some very eye-raising results, strange findings since in the next one I use the nitro in a very unconventional way. thanks for the feedback
Will you be my father? Lol. In all seriousness, I'd love to know what sort of power that little engine was making on the nitro mix. Would be interesting to see the comparison. Nitro actually has less energy density than gasoline, it's just that you can burn more of it with less air than gasoline which is why dragsters use nitro. Wonder if this Briggs was actually making more power, or just more noise.
That’s some serious crankcase pressure going on there lol. Talk about bulletproof, how on earth is that little engine still running ???..... Amazing 👌👌👌
Laurențiu Panait I guess that's true since a turbo is technically classified as a type of supercharger. The only difference between a "supercharger" and a turbo charger is that the "supercharger" is belt driven which creates more low rpm boost (but with parasitic losses), and a turbo super charger gets driven by exhaust fumes at no parasitic losses (but with less boost in low rpm). In the end they both push compressed air through the intake, the engine could care less where the air is coming from, heck you can even just fill a scuba tank with compressed air and plumb it to the intake and it will still will do the same job as a blower.
I enjoyed the comment about how some extra Fuel Tank Elevation should increase the Fuel Flow to the Carburetor thereby enriching the mixture. You don't need a see-thru cylinder head and dragster fuel to blow-up a Briggs & Stratton engine. Just over-rev the plant on regular gas and slightly low on oil. BOOM!!!
Having grown up with top fuel dragsters I cringed every time you did the quick short revs after a high rev cuz that's what's more likely to blow your engine
Hylian Assassin thats what I was hoping for but ... No go. My gut tells me that in the next episode I should be able to get a catastrophic failure. To be honest I want to see Parts flying through the block. But capturing nitromethane burning in the combustion chamber and high-speed is something that I don't think has ever been done before. I looked everywhere on the internet and came up empty-handed, it looked amazing that Snow White burn...
Warped Perception I know you can get the separate components to mix your own nitro and I'd almost be willing to bet that a mere 50/50 won't get you the catastrophic results......however you can increase it using that 50% as a jumping point and once you get up to that 90 a sustained rev with a quick burp should practically guarantee something dies in spectacular fashion lol......but then again....everything works in theory but not always in practice..... definitely looking forward to the possible results
Mandernach Luca nope.....the sustained throttle is all safe it's when you let off then give the throttle a quick bump then let go from what I understand that there's too much of the highly volatile fuel stuck in the engine at too slow an rpm at the point of ignition that it blows up......mind you I don't know if that's exactly it but that's my best guess based on my knowledge
I'm just wondering why this is the case. I mean i wonder how there even can be to much fuel-air mixture if these engines are build for max. pressure. Can there be something like to much fuel-air mixture? When i remember right, those things have a roots-compressor or something like that. So there constantly under pressure (Queen reference XD), or not? Well, i don't know enough of these engines but i would love to understand them.
I didn't find this until now but it's way cool. Do it again but at night, it would be an impressive show. The thing I can't figure out is all the Briggs engines I have are dialed right to the factory specs with fresh gas and while you are able to start this one with one pull, mine won't start even under the power of prayer. Great video!
Dug this video, you are awesome sir. The high speed camera work is amazing as well. IDEA: Re jet that Briggs & scrap iron for l.p. gas, then hit it with nitrous. Can't wait it's going to be cool. Peace out
The oil was most likely coming out the breather from the ultra high RPM turning the crankcase oil largely to mist. Too bad you didn't have a tach on it, it sounds like it hit over 8500 RPM.
Fifteen years ago I started my 10 HP snow blower while it was COVERED with fresh snow (and it was well below freezing). It was a Snow King and fairly easy to start regardless of the snow on it. I started it on the choke (restricted airflow) and let it warm a little, coughing and gagging at a fairly low RPM (with the throttle nearly open). Flipped off the choke, took a few steps away to grab my gloves and.... the air governor vane was frozen so it didn't govern and it ran away. Got back to it just in time to ACTUALLY SEE the connecting rod come out the side of the crankcase. $350 later, I installed the new Snow King, and was more careful.
At some point you gotta get a ball bearing I/C and make a drag kart with a blower, nitro, hemispherical head and domed piston and see if you can make 100 MPH! \(^_^)/
I'll admit first off, that my knowledge of four-stroke engines (and combustion engines in general, I guess) is somewhat limited, but does the lack of a load to propel have anything to do with how quickly these engines do fail? I've always heard the more you run an engine that's not under load the worse it is for it, since it is more free to over-rev, since it has nothing to regulate its rate of acceleration.
fabio bellini we actually start filming tomorrow, we had a bit of a delay because we're making some equipment changes. But we're good to go now for the rest of the year. Thanks for checking in I can't wait for that one is going to be nuts.
![See Through Engine (S1 • E3) Different Fuels [WD-40 -Acetone -Stoichiometric Gas ] 4K](http://i.ytimg.com/vi/31mtOdHGbB4/mqdefault.jpg)
I wonder if the Briggs company will see this and use it for their commercials to show just how strong their little engines are! Hey it's all about reliability!
+The Mechanical Koopa I am currently kinda sponsored by them kind of in a way, starting with the larger model which is going to appear as soon as this thing blows up, at this point who the hell knows when that's going to be. But I have made some very promising developments with transparent materials. I have some really really cool stuff in store for the near future.
oh man I can't wait!!! too bad you can't put that little thing on a dyno LOL the 100hp briggs hahaha
The Mechanical Koopa that's coming soon... Grunge style
Cool video, but I️ have to disagree. Briggs L heads have always been plagued with problems. A sample size of one can’t prove much.
Where did the oil come from on the ground? Closure plate gasket failure?
Head problems would be the one thing we wouldn't see on this channel, since he is replacing the head with the plastic one.
Dude , you are the shop teacher every 15 year old kid wished they had.
Well done....
You right😂
well im 15, wish i could have him for a shop teacher... ehh id say your comment checks out for now
I had a shop teacher just like him! Thank You "The Rod"
i essentially had this shop teacher (Not him, but the guy did crazy and fun shit in class, only class i learned anything from, and the only class that tried to teach me anything of use) and i can confirm, it was amazing.
Does shop exist any more? When I was in high school we actually had auto class with a big garage that had 4 lifts and a tool room full of every snap-on tool you could imagine, it was easily the largest chunk of the school's budget and certainly the first thing to get cut.
You have understanding neighbours.
SW6 my neighbors are actually great
They're all gone for the NHRA finals.
@@WarpedYT I think the fuel has oil mixed with it because lots of those RC engines are 2 stroke and I think the oil was blowing out the exhaust.
@THE FRENCH BAGUETTE nitromethane is racing fuel it's similar to Dynamite like nitroglycerin it carries its own oxygen molecules simply put it makes about 2.3 x more horsepower than gasoline but with nitromethane you can pump eight times the amount of fuel into a cylinder than you can with gasoline simply badass stuff
@THE FRENCH BAGUETTE a really agressive fuel😂
You're highly elevated crankcase pressure is blowing the oil past the seals. But watching this thing run Full Tilt Boogie I can't believe what I'm looking at it defies everything that I thought I knew
Also highly likely that the rings failed and the blowby made the crankcase pressure even worse, thus blowing oil out the seals.
Methanol is thinner than gasoline from a molecular standpoint. It leaks past the rings and milks the oil. That's why you change the oil after every time at the track on a methanol car.
Essentially that oil was mixed with methanol/nitro which thinned it out.
9k with load on strait meth can lift the cylinder off the block , just below the head bolt bosses, got a friend that has one as a trophy in his garage . Built not bought . They reached the blocks maximum hp with raicing block/head girdle ( also stretched when the cylinder failed).
Buck Ding first thing i was thinking was melted rings causing excessive crankcase pressure
Their is no load on the motor so it will take a lot
Man, you put so much effort into these videos and they turn out amazing, you could've stopped the video after the engine stopped working but you still went out and did it. Amazing job.
Your neighborhood must LOVE you!
My exact thoughts
resqjason2 no more annoying than a guy running a lawn mower. I get the joke though still funny
They ALL moved LOL!
a deck screw as a spark plug. god i love the internet
I love it..Im sitting there thinking "turbo charge it if you want to hurt it" and you literally said "the next step, im going to turbo charge it"..cant wait!
My family owns a hardware store in small engine shop my dad who just turned 76 yesterday is hooked on watching this channel he asked me every day about it we're certified Briggs & Stratton dealers flatheads forever baby!
That slowed down cylinder firing sound gave me chills down my spine
This is a Briggs and Stratton? Makes sense. Bullet proof little engines
Flat head engines are simple, cheap, and tough. Half the horsepower or less compared to ohv or sohc and dohc
I can only assume the oil came out of the breather, the extreme rpms you were hitting were probably building up crankcase pressure forcing the oil out he breather tube
The Bearded Outdoorsman I assumed that also.
Yea I agree. My go kart racing engine blows a lot of oil out at 9000 rpms
That is what I thought, too. That rectangular piece the hose comes out of is directly behind the valve stems and all
there is, is a porous metal mesh in there, if I remember correctly.
(Been decades since I have seen the inside of one).
32 year old mechanic and honestly one of the best videos I've ever seen always wanted to see this but you beat me to it!! Thanks for the vid
Never seen this channel before. Came up in suggested videos today. I really like your cinematography. The high speed stuff is fantastic. Subbed.
ExaltedDuck thank you !, Glad you like it. I have some amazing things on the way.
I ran a 5 hp Briggs motor on nitro that was on a go-kart when I was 12 years old. I ran into the issue of fuel mixture problems. Had to make a custom intake runner & carb. Also made a custom bracket to advance the timing. it worked and didn't destroy the engine until I revved it a lot and starved it of fuel. Basically never finished it but I bet if you could keep fuel in it and keep it cool it would run ok for a while. Also, need a billet head as it blew the head gasket a few times and a way to vent the crankcase as the nitro is causing a ton of blow by the rings and is why the oil is being literally blown out. Super cool project and makes me want to try it again.
BY FAR one of the best slowmo I have ever seen, nitro acts crazy in chamber, like instant deflagration!
marko Helenin
Unless the explosion pressure wave is super sonic it is deflagration. Detonation is super sonic deflagration is sub sonic. All combustion in engines like this or your car or whatever is deflagration. Tnt c4 missiles ect make detonation. Kinetic energy impacts are always detonation because everything is already super sonic Buy a dictionary or look it up on google.
marko Helenin when the gasket blew so did my lol!!
Yes I know all this, I have read 12 courses of chemistry and physics. Thats why I wrote deflagration but it was almost as fast burning as fuel in some (FAE's) fuel air explosive mixtures containing isopropyl nitrite.
Props for all the effort you put into this video. Even though it didn't blow up, you got some insanely good footage which made all the hard work you did worthwhile.
I just can't believe how fast the briggs engine ran! You must hook up a rev-counter when you do the turbo run, just to see how fast it will go before the conrod snaps!
Paul Roberts
I hooked a tiny tach to a little 3.5hp that I blew up on my channel.
It would go about 56-5700 tied wide open.
لحيو ان
We spin our modified Briggs Animals (6.5 OHV) 9500 but we run billet rods too
garrittpwl
I love small maxed out modded engines.
Lol what’s it put out, like 30-40+hp I’d figure
@mrhillfolk 28hp but its only 206cc
Can you make a see through Diesel?
Yes, that would be interesting.
Diesel is oil that need to be compressed a lot. Gas is flammable.
Patrick Nintemann the head probably won’t hold the compression
@@imtheyamahaguy4872 Its a challenge. Yes.
Diesels require a much higher compression ratio and I have a feeling that those little acrylic heads wont be able to hold the compression. Besides, they aren't really that interesting compared to normal gas engines. They would look the same, but diesel doesnt require the spark to be firing every power stroke. Diesels only need a spark when they initially start.
That plexyglass makes a better head than cast iron !!! How to mow a lawn in 12.7 seconds !
Robert Bush ii
Nitro is a highly compression sensitive fuel so if you have enough compression like at full speed and enough heat in the engine it could run without spark. Or at low speed with enough heat same applies. They also don't always have 50 degrees of timing in it. I can send you to runs I have found in my travels that are pretty cool. It shows fuel curve and timing. Really cool stuff. It also has its own oxygen so you can burn way more of it. I'm amazed at how well it ran. This is my new favorite video on TH-cam
This is the coolest video I've seen in months
Archeryte thanks !, We're trying to get more film than posted, the setup on most of the stuff is pretty intense.
I am amazed that piece of acrylic survive that!
All I can think is WOW!!!! That little Briggs is apparently 1 tough little engine. Seriously impressive!
Nitromethane isn't as dangerous as it might seem. The reason thouse Top Fuel engines occasionally explode has more to do with HOW MUCH nitro they try to burn at once rather than the fact that it's nitro.
An ordinary engine can run it but it has to be tuned property and the additional stress on parts needs to be factored in.
177SCmaro
It could also be that additional oxygen atom added on to the petro chemical string. Education is priceless but a new motor for your car will cost you a few thousand bucks.
177SCmaro Exactly. There's more power in 85 octane gasoline than there is in nitromethane.
charles bishop Technically, yes.
Its about time someone realised that the nitro methane only provides the engine with more oxygen into the combustion chamber. The top fuel engines are only able to produce more power through careful tuning of the engine through compression rations, large enough combustion chambers plus heaps of fuel which includes the energy included in the hydrocarbon part of the fuel, separate from the nitromethane.
The only way any engines can ever produce heaps of power is by getting as much oxygen onto the combustion chamber, plus the appropriate amount of hydrocarbons to burn the available oxygen. Simple really, as long as the engine can hold together with power that it can produce.
Destroy a POS 4 stroke, im good at that, they are fucking junk, never liked the 4 strokes and never will
When I thought it could not get any better you just announced the addition of a turbo. Yours is the best channel I've ever found in TH-cam!
argilaga thanks , you will like the next engine episode coming out next week.
When you do the turbo on it, it would be awesome to try to hook that up to some sort of dyno and see how much power it makes before it blows.
This is amazing!!! After all that abuse, that little Briggs and Stratton engine held up nicely! It's shockingly reliable, durable, bulletproof, strong, and crazy for a lawn mower engine to withstand nitromethane like this!
When you turbocharge it, you should drill out the main jet in the carb to increase your fuel ratio (use the main jet hole cross sectional area in ratio to the Venturi minor diameter to get your fuel flow increase in the ball park). Nitromethane has a much wider tuning window, but you still need at lot more than gasoline to get the big bang you're looking for. Loved the video. I'll be looking forward to your turbo video.
I think it has an adjustable main jet
What a great advert for B&S! and I love it. Guy goes into back alley, nails an anvil straight into the tarmac, clamps a plucky little engine right onto the anvil, and destroys just about all else but the engine! - Only in America..... Don't you just love the red, white and blue?
So this is the equivalent of overclocking a PC
Galactic Gaming essentially .. yes
Overvolting may sound better suited.
Plain overclocking is more like installing an adjustable rev-limiter.
Martín Varela ^bit of both. Higher revs/clocks supported by adding more fuel/voltage.
Galactic Gaming lol yup 😂😂
Overclocking a PC won't get your hands dirty.
steve
(using my best Chicago accent) Well, there's oil everywhere, it's not runnin' and idk why, but let's try putting a stick of dynamite and see if we can get this thing to blow....
Emanuel Rodriguez lmao. . . That was funny, you had me cracking up.lol
WAITING FOR THIS VIDEO FOR A LONG TIME
I really appreciate this video! The fact that you ran 50/50 is great, and you can see how cleanly it burned as proof of the methanol chemistry. Also, you can see how big an effect additional timing has. This was really cool!
+Guns Cars and Digits thanks !. It burned really really clean .
The production quality of this video was awesome.
This is pretty amazing, and an excellent unintentional (?) advert for the bomb-proofness of B&S engines (which clearly ain't no BS) on top of all the countless examples still ticking away in 50+ year old lawnmowers around the world...
One part I found both satisfying and surprising was how, at least on the bench, it sounded rather like a miniature top fuel dragster engine during the pre-run burnout, most unexpected for something so small. Interesting that the change of fuel could have such an influence on how an engine *sounds* as well as runs. I had thought the difference in sound between e.g. an automotive petrol and (non-turbo) diesel engine was mainly down to the structure, how they're built and how they produce combustion, but maybe it was simply down to the fuel and how it burns all along? (Also, what capacity is the cylinder on this, how does it compare to the individual chambers of a dragster? It looks a little larger than any piston I've handled before, or at least equal to them, which pegs it around 400cc if it has the same stroke as the engine I'm thinking of... I expect a typical funny car has larger cylinders, but, could be wrong)
And what framerate were you recording at this time? It'd be nice to be able to work out the ultimate rpm. Daresay it could probably be done by ripping the audio and just counting off the cracks against the timeline in an audio editor, but, hey, if you've got a high speed camera, may as well make best use of the footage.
(Where do you even get all that stuff, and the clapperboard and pro grade regular speed camera? Side project of a TV studio that utilises a lot of high speed footage?)
Tempted to see if I can get some nitro now, give it a go in my bike... not for extra power or revs, just for the sound. Base model 125s have a rather disappointing sound anywhere except in the saddle ... when you're on top it sounds rather sporty, but when another of the same model passes by it's a combination of sewing machine and wet fart. Be nice to have the outside sound match up to what reaches your helmet just for once. Though, I do need to perform some remedial work on it first... might be smaller capacity but it puts out about 3x what the B&S claims (and 3x the revs, though not simultaneously), and is somewhat more highly strung and fragile to go with. Also got a mystery oil leak from somewhere other than the head gasket, and the carb could do with a tune, along with other non-engine faults...
NB you said it burned slower than gasoline, which is what you'd expect for ultra high octane race fuel, but the flames in the slomo footage sure seem to burn out rather faster than the regular gas did, even though it seems likely it's been slowed down even further than before. Is that just because of the increased spark advance, or is something else in play?
Anyway, even if the ultimate destruction didn't occur, the footage of the gasket blowout was definitely super cool, and the entire video log of the attempts has been fascinating. I'm sure the turbo attempt will be even better. Keep up the good work :)
This poor thing got so fast that the oil pressure skyrocketed through the roof, so all the gaskets are now just toothpicks in the way of angry bull :)
Krivulda...... while that may be partly true... the main problem with running "pop" (as we call Nitro in drag racing)... IS, Oil Dilution... and of course, oil level increase along with it. Briggs engines still (even though this one is an older model) use the very simplistic (and Antiquated) "splash" method of "lubricating" the engine.... so any increase in oil "pressure"... is confined to the crankcase and as the oil level increases (from dilution) it also decreases the air space internally and as the oil becomes thinner and thinner it Will find places to relieve that pressure and thinned out oil through every orifice that it can.
yea, any old wka or gocart racers will remeber dumping the light gray goop of oil after each race. Start with 1 litre, end race with 1.5. We used to run large external breathers/catch cans that recycled back into crank. Would be interesting to see how many bars of pressure where kicking around in the crankcase.
Just fun and interesting. As someone who has destroyed many B&S motors over the years building everything you can think of, these motors are incredibly well built. Thanks for this silly, yet fun and like I said Interesting to watch. Thanks, I'll watch some of you other stuff, thanks again!
When I buy a lawnmower I always make sure the engine is a Briggs.
man it was indestructible, wait till you see how much Horsepower it made on nitro
I'd like to know how much more power an engine like that will make compared to the way cane at the factory.
Every time I worked on a Briggs engine devalve seat always came off they are just junkie engines
anak priok nie..
Fuck that i go with 2 stroke engines. How ever i love destroying 4 stroke briggs and watching them self destruct. but the hold up fine with xd-100 2 stroke oil rigged up for total loss oil injection as illed my free briggs withxd-100 2 stroke oil. they are nice and offer a 2 stroke. but i rune xd-100 in there 4 strokes as well. they hold up as i rev the crap out of them.They are crap 4 strokes that i love to destroy
Cool! I once had a Briggs and Stratton engine on a old lawn mower that refused to start. Of course lets try some Nitromethane found in model airplane fuel?! I filled the tank with model fuel T-100 or something like that and it started right up and I thought maybe I can just mow the lawn with this fuel. I revved it up a little than WHOOSH----the connecting rod shot straight up punching a hole in the top of the engine. Goodbye lawnmower! My experiment failed but I sure blew up the engine!
16:22 I fell in love with TH-cam
I agree that looked so amazing!!
I read an article by Bob holler on the allpar website about dishing your pistons to put more air and fuel on the exhaust side of the Piston because the flame front would travel faster in that direction. It's amazing to actually see it happening and watch the swirl of the flames as they travel through the combustion chamber.
YOWZA!...I'm goin' out TONIGHT to buy a Briggs!...that thing was just a little past design spec before the head gasket let loose!
As to the leaks, I know for a fact that methanol eats Buna and rubber...I think only Viton seals will hold it. There was prob'ly a good amount of blowby which allowed the methanol at the crankcase seals...valve seals also prob'ly failed...or the crankcase seals just got physically blown out. Your nitro also tends to eat things by oxidation, being that it's the source of extra oxygen that makes for the crackle you hear at the dragstrip.
Hey man, I thought first, a typical show of an American ´I am the greatest´ guy. But what you are doing is really great. It should be shown to all students ,who are in education for machine development. Congratulation for that. And a lot of respect. Of course I am now a fan of your videos. Keep going.
Nice job Matt. See if you can buy an aftermarket magnetor for that engine. I am pretty sure they make them. Nitro needs a LOT of spark energy to get a complete ignition, you're right there. But it also needs a longer spark duration to pump a lot of heat energy into the system. Nearing full throttle, you began getting near that energy threshold. If you had a hotter spark with a bit more duration, I think you would have it. I will say.......adapting an MSD 6 redbox to this and adding a crank trigger to fire it would do it.
could probably use a little higher compression as well which would help build more heat up.
Not really as much as you'd think. Nitro doesn't act like most other fuels since it carries its own oxygen. Fuel altreds run no forced induction and run modest compression. They gain their immense power from harnessing the power of the molecular oxygen available. The issue is giving it enough spark energy to break that bond and liberate the oxygen. Fuel motors want two things, drenched in fuel and bathed in spark and timing. There is a saying, if it wasn't for the magnetos, fuel motors would be fuel pumps. Literally, in order to get power out of them, you need an insane amount of fuel. The amount of fuel that makes you think "No way, I am flooding the cylinder!!!" Nope, you're just getting it where it needs to be. Give it the right amount of spark and you'll let the genie out of the bottle.
A crank trigger with a high output coil would do the trick.
I am pretty sure of that if you can make it a bigger sparkling maybe you can get it
not sure of the total energy of the spark, but a modern gas engine should be around 40kV to the plug out of the coil @ShadowPBPBC
from what i know you need higher energy spark to light bad mixtures easily
My favorite part of these briggs is the fact that you can take them all apart, mix two engines parts together, reassemble, and expect it to run.
Lol 😂 you cant kill a Briggs and Stratton lmao 🤣👍💥👊💥🤝💥!! Great stuff!!!
I have killed 6 Briggs an strattons lol
It’s true. Just about locked one up and decided to start it again. Ran like crap but it didn’t die
Yeah 😂🌧🌧✝️⛪️®️™️⛪️✝️🇺🇸🌎🌧😳©🥶🙏🏾🙏🏾🥶🥶😳😳🍆🍆™️🍆🍆🍆🍆🌎🏳️🌈🏳️🌈🏳️🌈🍒🍆😳
Dam boat jell your here😂
@@Therandomchannel19 i just bent a crankshaft on mine, other than that my other briggs & strattons has been running for over 30 years
Awesome video! I was 1 of the people asking about running Nitromethane and now I'm ready for the turbo, should be interesting.
brigs makes a tough engine for sure. probably makes 30hp on nitro haha
Rusty Shackleford sh-sh-sha!
We must be into the same stuff man I see u on all the videos I watch sh-sha-sha
Poor rings couldn't seal the compression enough thus allowing compression into the crankcase and blowing oil through the breather vent and the oil seals. Cool video!
I had a friend who ran his moped on nitro. It ran with the ignition switched off, i.e. without spark.
Hahaha it literally started dieseling
My dad bought a Briggs & Stratton lawn mower when i was 11. A year later he taught me how to do the lawn. Im 48 now & i still drive to my parents house to cut the grass. Been cutting it for 36 years & still with that same exsct lawn mower. Still starts up 1 pull most of the time. No repairs either. Just oil changes, spark plugs & air filter. Although next spring i gotta new rear wheels for little Bertha
GREAT VIDEO!!! I think the oil came out of the crank case breather and or maybe blew a seal somewhere...I would still use it on my GO CART No Problem , with the Nitro!!! Thanks for sharing...
All the other fuels you've put through this engine explode with a dull flame-y, fwoosh-y "boom" compared to nitromethane, which explodes with a sharp, almost metallic-sounding "crack" and the flame almost--nay LITERALLY burns white hot at 12:11. Slow the video down to half speed during the slow mo bit and the sound is incredible. Watching the combustion fly out of the melted spacer at the end was like watching the finale at a fireworks show, and just as dazzling.
What gets me is how the metal spacer failed before the acrylic head did.
Your neighbors must love you.
That little champ of an engine was like "Gimme more! I can take it!" lol.
Looked really cool on the slow mo too.
16.03 made me laugh.. great vid! thank you
i'm sure briggs is happy you show them how durable their small engines are and how well they can handle the torture you're giving them
Nitromethane gives less energy than gas by about 1/2. But you can put almost 8 times as much in with the "standard" amount of air that a cylinder pulls in and get a "good" mix. That ends you up with about a 2.3 times the "Bang" that you can get with gas for a given amount of air. It also runs about 800 deg. F hotter than gas.
Rem1061 thanks for the insight , in the next episode I am going to see how much power I can get out of this thing until it blows .
The slo' mo' shots when the head gasket fails is great.
16:10 Wow, so that's what a HEAT shell does
Man that was quite an amazing video.. Very interesting.. All 19 minutes and 18 seconds of it.. I'm glad I clicked on it... :)
I really wanna know how much power that made! Sounded crazy!
LOL... whoa !!!!!!!... your question will be answered and you will be blown away, We started filming the follow-up to this episode and I was beyond amazed at how much power this thing made with the nitro alone ( hint,hint Dyno ), then I bolt the turbo and nitro and holy hell .. it was nuts !
I can't wait! I was going to ask if you could put this on a dyno! Those B&S engines are crazy strong.
My boss did that with an old lawnmower and mowed down 3ft grass no problem. Thing also would shut off until he crammed it right into the thickest grass. It never did restart after that though. Lol nitro is some volatile stuff. Awesome video.
Is that a supra back there
WHERE IS THE SUPRA ? I must see the beuty
Daaaamn 2JZ❤️❤️❤️💥💥💥
This channel deserves more subscribers.
11:21 Is that a SUPRA?!!?!?
Matthew Kinney YESSS
WOOOAHHH!
Great video Dude !!!
Nitro gets REAL Hot, the combustion chamber on a top fuel car gets 7,000 F and burn's between 9 to 11 gallons per run.
Your right about the IGN , nitro needs ALOT of spark , there magnetos has 44 amps and they use 2 of them.
LOVE your Dog as well !!...................we what to see more more more !!
This man owns a Supra?😩😲😲👏🏽
BennyTheGreat I realized too!
What I've taken from this series... That's one hell of a good quality engine! Forgiving as hell!
it seems that the oil is leaking through the crankcase breather. You can block it, but it's dangerous (the gases within the crankcase can ignite and explose). The best way to counterpass this is to mount a tube form the breather to a "catch can" so the oil flows inside a can so you don't make a mess and the engine will still be able to breath normally
That video was incredible, thank you for all of your hard work in entertaining us.
I wish this guy was the host of the new MythBusters, he reminds me of Adam. Great epiosode dude, looking forward to the turbo .
Jack Gorbachev I agree , the new hosts feel so fake and forced. It feels wrong .
haha ... thanks man, Appreciate that. not sure if I'm feeling the new show, it feels weird without Adam and Jaime, I like it a little ghetto and grimy anyways. maybe we will do a joint episode one day, science and discovery, that would be interesting.
Funny thing is Im watch in them rn the new hosts are 2 guys with 2 skills designing and engineering. Jamie and Adam had it all including the opposite attitudes witch made it all the more entertaining
Wow
No one can replace Adam
Now put that thing back in the snowblower LOL. Makes for an easier winter. It'll shoot snow over your house and onto someone else's yard lol. I wonder how far beyond the 3hp it was putting out. Likely 20 hp. Thanks for this.
Oil is probly due to over pressurization of the crank case because of the higher blow by gasses. Can you get new rings for it? If you can you should custom grind them for nitro/boost application to see if it helps. With it being an air cooled engine you should also think about putting a fan near it to help cool it before it seizes up, especially if you're gonna turbo it. Can't wait to see more vids, keep it up man.🍻
VetteTTV12 you could be right, you gave me an idea about the temp though..
wraping copper tubing around it in between the fins for a rudimentary water cooling system?
Warped Perception, happy to help. Feel free to bounce any ideas off me. For reference I'm a retired F16/F22 crew chief, prior ford technician, turned mechanical engineer.
1320crusier, a blower fan would do a better job at dissipating the heat and less time consuming. Also, the contact area of a tube would be too small to be efficient in square fins. If he had more time and resources he could possibly water cool it with custom fabrication, but it would be a whole new project in of its self.
Its simply the craziest option I could think of. Thats all :).
I believe the most efficient way to air cool it would be to duct the air through the fins or to attach some high cfm computer fans to each side to pull or push air through the fins.
This is the best thing i have watched on youtube so far, loved every second of the vid, cant wait to see the turbo setup lol
I must say that it ran pretty angry on that last run.
As you may know, nitromethane burns at a much lower temperature than gasoline, hence why topfuel cars have no coolant passages in their block, the temperature of the nitromethane regulates the temprature.
Awesome vid and I'd love to see you try 90% nitromethane!
That's a great point that I did not think of, you MUST give me your opinion on the subject in the next episode, I had some very eye-raising results, strange findings since in the next one I use the nitro in a very unconventional way. thanks for the feedback
Will you be my father? Lol. In all seriousness, I'd love to know what sort of power that little engine was making on the nitro mix. Would be interesting to see the comparison. Nitro actually has less energy density than gasoline, it's just that you can burn more of it with less air than gasoline which is why dragsters use nitro. Wonder if this Briggs was actually making more power, or just more noise.
J D well in the next episode I am getting it on the dyno.
Warped Perception awesome!
That’s some serious crankcase pressure going on there lol. Talk about bulletproof, how on earth is that little engine still running ???..... Amazing 👌👌👌
Could you supercharge it? Or turbo charge it?
That's exactly what HE SAID he was going to do for the next video. PAY ATTENTION
Why not both?
Jeff Liggett You can only supercharge a carburetted engine.
Laurențiu Panait I guess that's true since a turbo is technically classified as a type of supercharger. The only difference between a "supercharger" and a turbo charger is that the "supercharger" is belt driven which creates more low rpm boost (but with parasitic losses), and a turbo super charger gets driven by exhaust fumes at no parasitic losses (but with less boost in low rpm). In the end they both push compressed air through the intake, the engine could care less where the air is coming from, heck you can even just fill a scuba tank with compressed air and plumb it to the intake and it will still will do the same job as a blower.
Laurențiu Panait nope, draw through or blow through, Been done for decades on be bug sand rails
I enjoyed the comment about how some extra Fuel Tank Elevation should increase the Fuel Flow to the Carburetor thereby enriching the mixture. You don't need a see-thru cylinder head and dragster fuel to blow-up a Briggs & Stratton engine. Just over-rev the plant on regular gas and slightly low on oil. BOOM!!!
Is there a fun story behind your missing finger? I'd never noticed that before.
Thx 4 your effort to show how it looks in the inside of a combustion-engine - while it runs!
Having grown up with top fuel dragsters I cringed every time you did the quick short revs after a high rev cuz that's what's more likely to blow your engine
Hylian Assassin thats what I was hoping for but ... No go. My gut tells me that in the next episode I should be able to get a catastrophic failure. To be honest I want to see Parts flying through the block. But capturing nitromethane burning in the combustion chamber and high-speed is something that I don't think has ever been done before. I looked everywhere on the internet and came up empty-handed, it looked amazing that Snow White burn...
Warped Perception I know you can get the separate components to mix your own nitro and I'd almost be willing to bet that a mere 50/50 won't get you the catastrophic results......however you can increase it using that 50% as a jumping point and once you get up to that 90 a sustained rev with a quick burp should practically guarantee something dies in spectacular fashion lol......but then again....everything works in theory but not always in practice..... definitely looking forward to the possible results
Why do those quick revs kill the engine and not the long full throttle one? Has it something to do with the timing?
Mandernach Luca nope.....the sustained throttle is all safe it's when you let off then give the throttle a quick bump then let go from what I understand that there's too much of the highly volatile fuel stuck in the engine at too slow an rpm at the point of ignition that it blows up......mind you I don't know if that's exactly it but that's my best guess based on my knowledge
I'm just wondering why this is the case. I mean i wonder how there even can be to much fuel-air mixture if these engines are build for max. pressure. Can there be something like to much fuel-air mixture? When i remember right, those things have a roots-compressor or something like that. So there constantly under pressure (Queen reference XD), or not? Well, i don't know enough of these engines but i would love to understand them.
Clear head!!?? That is awesome. What a fantastic way to teach combustion.
16:06 like a desert eagle
Sure is !!!
😂😂😂😂😂
I didn't find this until now but it's way cool. Do it again but at night, it would be an impressive show. The thing I can't figure out is all the Briggs engines I have are dialed right to the factory specs with fresh gas and while you are able to start this one with one pull, mine won't start even under the power of prayer. Great video!
11:20 bro is that a *Supra* ????
ya
just commented the same thing and now i see yours XD
@@NathansLife coincidence??
*I THINK NOT*
XD
@@greko4849 😂😂😂🤘🏻
Damn, that was sick, cant wait to see the boost.
Nice Supra
Dug this video, you are awesome sir. The high speed camera work is amazing as well.
IDEA: Re jet that Briggs & scrap iron for l.p. gas, then hit it with nitrous. Can't wait it's going to be cool. Peace out
The oil was most likely coming out the breather from the ultra high RPM turning the crankcase oil largely to mist. Too bad you didn't have a tach on it, it sounds like it hit over 8500 RPM.
LMAO !! love your comment, it was definitely up there in RPM. Next episode I will have all the goodies including but not "limited to" a Tach.
Fifteen years ago I started my 10 HP snow blower while it was COVERED with fresh snow (and it was well below freezing). It was a Snow King and fairly easy to start regardless of the snow on it.
I started it on the choke (restricted airflow) and let it warm a little, coughing and gagging at a fairly low RPM (with the throttle nearly open). Flipped off the choke, took a few steps away to grab my gloves and.... the air governor vane was frozen so it didn't govern and it ran away. Got back to it just in time to ACTUALLY SEE the connecting rod come out the side of the crankcase. $350 later, I installed the new Snow King, and was more careful.
2 things that are crazy in this video. you are standing in front of a fuckin SUPRA and the briggs bottom end could hold that much rpm
lol.. very true, the supra is 1000 HP BTW
The 3hp engine with the nitro methane now makes 200hp! Lol awesome video!
At some point you gotta get a ball bearing I/C and make a drag kart with a blower, nitro, hemispherical head and domed piston and see if you can make 100 MPH! \(^_^)/
nicely done! at first I had questions, but I finished watching and they were answered.
I'll admit first off, that my knowledge of four-stroke engines (and combustion engines in general, I guess) is somewhat limited, but does the lack of a load to propel have anything to do with how quickly these engines do fail? I've always heard the more you run an engine that's not under load the worse it is for it, since it is more free to over-rev, since it has nothing to regulate its rate of acceleration.
Joe No. Load itself is quite an arbitrary factor, it's the resulting requirement of increased RPM.
You are amazing.This video actually puts a smile on face.Keep the good work going onn mate.Keep posting.
hello I wanted to know when the next video comes out when the turbo with the nitromethane fuel is mounted, thanks
fabio bellini we actually start filming tomorrow, we had a bit of a delay because we're making some equipment changes. But we're good to go now for the rest of the year. Thanks for checking in I can't wait for that one is going to be nuts.