I have heard the trick behind alleviating detonation was to change the carb to a 38mm.I guess reworking the head isnt the best way to go about it according to Eric Gorr.I have a 38mm form a newer bike that im gonna try and run,i'll see how it goes.It'll run hotter with 2 base gaskets plus your port timing will change so thats not the answer either...from what i have "heard",some may have had success though.Mine is going in a 250r quad frame right now.Im a few days from firing her up.It may rattle a bit but hopefully i have that vibration problem solved |