fastrax
04-10-2004, 11:02 PM
Hi guys,
my question is in regards to preignition at wide open throttle. i've tried draining the fuel and replacing it with fresh 94 octane (which i always use), and the colder DPR9Z plug. but it still preignites at WOT. i have a wiseco 10:1 piston 1mm overbore, everything else stock. i even gave it a richer main jet. all these seemed to decrease the pinging a bit, but it's still there. IT ONLY DOES THIS WHEN IT'S HOT... after a hard ride or some fierce hillclimbs. do i need an even taller main jet? any suggestions? ThanX in advance!
my question is in regards to preignition at wide open throttle. i've tried draining the fuel and replacing it with fresh 94 octane (which i always use), and the colder DPR9Z plug. but it still preignites at WOT. i have a wiseco 10:1 piston 1mm overbore, everything else stock. i even gave it a richer main jet. all these seemed to decrease the pinging a bit, but it's still there. IT ONLY DOES THIS WHEN IT'S HOT... after a hard ride or some fierce hillclimbs. do i need an even taller main jet? any suggestions? ThanX in advance!