Re: our future
Ya all ever read much on the DFI 2 stroker? I read a little on it awhile back and they sound pretty impressive. Keeps the power of the 2 stroke, but from what I read, they burn cleaner than the comparable 4 strokes.
Ok, dug out the article, SnowTech, September 2000. Looks like they use an injection system that blasts the right amount of fuel into the combustion chamber when the exhaust port is closed. Says here that by doing this, it illiminates most of the unburned hydrocarbons kicked into and out of the exhaust. This allows for the 2 stroke to use a catylist to clean up the exhaust even a bit more. Then, by keeping it a 2 stroke, which we all know, has fewer moving parts and less differential pressure across the crankcase and combustion chamber, helps to keep it a bit more fuel efficient too, so there is less fuel burnt to produce the hydrocarbons and nitrogen oxides. Also, says here that 2 strokes have natural EGR (exhaust gas recirculation), never really thought about it before, but, ya that makes sense. Ok, so the way I understand this, by using DFI, it lowers combustion chamber temperatures, which doesn't allow for nitrogen oxide geraration as much as in the conventional 2 strokes. I don't see any dynos in the article, but the author claimed he rode a 50cc scooter with this motor in it that is supposed to use 40% less fuel with no loss of power!!! Pretty impressive if the things work out in the near future I hope!
Edelbrock Performer Series intake and carb, Tri-Y headers, K&N filter, 2 1/2" dual exhaust, 14 bolt FF rear.