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Why wouldn't the 2 stroke diesel idea work with a gasoline fueled race engine?
2 stroke
Why wouldn't the 2 stroke diesel idea work with a gasoline fueled race engine?
Because a diesel engine like in the pic is not throttled for control. It is controlled by the injectors and how much fuel they are applying. A gasloine setup cant be done like that for a host of reasons. A two stroke gas engine that is throttled wouldnt be a problem but they are inefficient and pollute.Originally Posted by Master Sergeant
130.7mph in about 7sec, from an idle.
http://www.youtube.com/watch?v=bbrazVxN1X0
Racing is who gets there first, not who gets there on schedule.
"if we keep doing it the same way we always do..we will always get the same results"
H8-2-W8
I think heat in the piston is an issue.....lack of time to cool. Assuming a conventional type ring and sealed crank-case.
S CP
"Dark Sarcasm"
Going fast is only half the fun ... what you make go
fast is the other half.
" A Government big enough to give you everything you want is big enough to take away everything you have"
I may be wrong but I believe the Sarge is asking if the general idea of a supercharged 2 stroke be used. Not necessarily the GM 2 stroke lay out. The answer is Sarge, it can. But is banned in almost every form of racing. Smokey Yunick claimed long ago that every race in virtually every form of racing, aside from the upper drag classes could dominated by a 2 stroke boxer engine if there were no rules at all governing the engines, or the fuel tank size.
LINK:GN-RACING.COM
The problem with Obama jokes is that his worshippers don't think they are funny, and the rest of us don't think they are jokes
They have been building 2 stroke turbo motors for years.. Velasco out of brigam city was doing turbo sled motors in the 80's. Different that the op's vid....they did it 'old school" pressurized crankcase. That is how the piston stays cool. Valves on a 2 stroke might be an issue...limited seat time means they get hot and opening/closing every crank rotation could have control issues.....
As for racing....the rules don't apply on the salt.KAWASAKI TRIPLES WORLDWIDE turbocharge polaris 700 2 stroke snowmobile engine dragbike
2 Stroke fuel control is just plain nasty. I think Bimota tried a non turbo fi 2 stroke street bike years ago with limited sucess
I'll concede, but
David Olsen of Tamarc Fl. tricked his mother into giving him $27,272.50 and yet refuses to help his 94 year old mother in any way.
Turbocharged outboard
130.7mph in about 7sec
http://www.youtube.com/watch?v=bbrazVxN1X0
Racing is who gets there first, not who gets there on schedule.
"if we keep doing it the same way we always do..we will always get the same results"
H8-2-W8
Just a thought. Seemed like a good idea for a race engine when I looked at it. Here is another idea, what about valves that opened and closed by solinoid type coils? You would not need a camshaft rather a timer that would activate the valve solinoids at the right time. You could have variable valve duration per RPM, steeper opening/closing rates and it would not have all the drag a traditional system has. Might be noisy though.
Its been done. The F1 guys have messed with it. It is capable of being fully programmable with infinite timing/duration/lift events. The electronics just don't exist to do it right at this time. There is a guy in southern calif that has had a running street deal for some time, but it is pretty low speed and primarily a milage/emissions exercise, and its run time is limited due to the solenoids over heating
Keep thinking Sarge. You're bound to come up with something nobody has thought of.
Last edited by gn7; 01-26-2012 at 05:12 PM.
The problem with Obama jokes is that his worshippers don't think they are funny, and the rest of us don't think they are jokes
The modern 2-stroke w/direct injection is amazing. But is limited in the RPM at this point in time. It meets C.A.R.B. emissions and can run on 87 octane
and still produce 1.5 HP per C.I.
The Question I have is how much valve spring pressure does the new Quad cam Mercury motor have
A hell of alot less than a equvilent BBC turning the same RPM! Even if you add the two valves together.
The problem with Obama jokes is that his worshippers don't think they are funny, and the rest of us don't think they are jokes
Smokey is one of my hero's OUTSIDE THE BOX for sure bent every rule
I will probably get bagged on for this but a 2- stroke gasoline engine will not ever pass emission requirements do to the flow thru concept and not be fuel efficient. The 2-stroke diesel will produce more in a bottom end to mid range and still run into the same problem in the emission area. If you go back and watch the video of the monster you will notice that the builder shut butterflies down to slow the engine from dieseling which worked instantly. thus proving that a 2-stroke diesel engine is governed in more than one way. It has been tried in offshore (very succesfully) but again the fuel requirements made it not doable. The compression that is normally required for a diesel app requires such a heavy bottom end that for racing makes it hard to do. Diesel do not fire on spark as does a BBC but compression and heat. They fire cold off a glow plug and once heat is built in the chamber the compression and heat fire the engine from there. That is why to shut down a big rig (so to speak) you don't turn off the spark, you shut off the fuel or air! Okay GN-7 correct me if I am wrong and please be gentle!!! Mark
What replaced the the 2-stroke Detroit was their D deck 4-stroke a great motor
On the old 2-stoke motor you had a rack injector the new 4-stroke has a electronic controlled unit injector both use the camshaft to apply pressure
to the injector. The newer units have a much greater pressure spraying into the cylinder and greater timing control of the fuel
You are correct about shutting off the air to the motor w/ plate on the old inline 53,71 series motors in case of run away
Steve, I am schooled in the cummins engines that have been in most of the trucks I have owned or driven. Not real savy on the 2-stroke G.M.s . Thanks.Mark
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