Home Forums 2-Cycle Racing KT100 Ideal compression to be competitive. Reply To: KT100 Ideal compression to be competitive.


Walt and Jim

I think both of you guys are right, I was just wondering about that, and now it all makes cense. There is absolutely no way that this engine miraculous gained 20 more PSI, unless like Walt said “may be a new ring”? Slap it on and thank you very much?

Jim, I think you may be right also with the trueness of the cylinder walls as well, and the light test. It’s just like when you do a straight edge on a cylinder head on a car, shine a flash light and you can crawl underneath.

We do run a spec class that switches from pipe to 4 can every other race for the old farts, like me. With 390 lbs. Pipe. 410 lbs 4 hole can, and a 3 disk L&T Wet clutch

And a spec class for the young guns Sr Super Sportsman at 360 lbs pipe and a 3 hole can 2 disk dry clutch.

That being said, for a spec class (club level) KT100. What PSI is most common?


Thank you all. Fast Freddy.