Oscar Cota mentioned on FB yesterday that it was a big day for all the guys here at KX Guru Racing. And it's true,,, but not just for us.. Steve Parris has been working with us for a year and a half to get us a Turbo Crank, get it installed, and ran on a dyno. But before I get into all the details let me say to you Steve, everything you told us about your Turbo crank was spot on. It did everything you said. After all these years of having some people say that it does not work, making fun of it, and being down right foolish about it, we have our first bit of proof that it does work. Yes, read it again... IT WORKS!!! IF you ran a turbo crank in the past and showed little to no gains then you did not run one of Steve's cranks.
For a recap for those that may have missed it, we took Jason Tanner's clapped out 98 kx250 and ran it on two separate dyno's. Then we rebuilt the bottom end with Steve's Turbo crank and reinstalled the worn out top end. . We had to rejet due to how the turbo crank works... Then today we stuck it on one of the dyno's and made several runs.... We recorded a 15% increase in power... 15 %........ I think once we get the jetting spot on we might be able to squeeze closer to 20%. Hopefully we will get in next week to the second dyno for validation.... More will be forthcoming as we post more info and get further proof... But as of right now, I know it works... Very impressive Steve.....
I know it was a little premature but we have a Turbo Crank in Jeff Grawbargers drag bike.
We should have some numbers on it very very soon..
Here is the only mod made to the cases... It's mandatory or the Turbo Crank just won't work.
I still think we need to lean out the needle a tad and the main jet one jet size. We just didn't have the time as the owner was trying to close on a busy Friday... When we take the bike to Dyno #2 we should have that done and ready to test so it will be interesting..