09-01-2002, 03:19 PM
i know this is a honda forum but i had a few questions and was hoping someone could help me, after all i am 2/3 honda(97' recon / 69' cb 350 ). i am pre-paring to do a top end rebuild on my 99' yamaha warrior 350 and plan to bore it .020 over and drop in a wiseco 10.25:1 high compression piston. stock compression is 9.1:1, i was curious if i could get away with running 92 or 93 octane without it knocking and also if it would be okay to add a table spoon or two of octane booster to every tank of fuel. i am also wondering if i need to re-jet to accomidate the new bore job and high compression piston? any and all feedback is greatly appreciated, thanks in advance for any replys.
mike
mike