Quote:
Originally Posted by Ram Jet
Your main jet might be spot-on with your overbore. I'm running 110s on a box stock 250 (Yoshimura slip-ons) and I'm happy with it. I can pull an indicated 100 M.P.H. in 6th with 15/42 gearing at 10K. I haven't had a need to touch any other jetting.
Bill
|
I'm running 15/43 gearing and a fresh chain/wheel bearings.
I did some "science" today. At about 11,500 rpm in 6th, I indicated a hair over 110, the gps claimed 101.1; I'm pretty happy with how the main felt there.
When I had a factory pregen engine, aftermarket exhaust, and opened intake lid, I found I got the best 0-60 times on a 108 main jet, 3 washers, and otherwise factory jetting.