Long Rod Todd Posted September 18, 2006 Report Share Posted September 18, 2006 I have a 4mm stroker with Passion racing porting. The rest of my mods are, dual 35mm Keihin carbs, Boss racing intake, K+N filters, +4 timing plate, lightened flywheel, V-Forces reeds, gyt-r ignition module, cool-head cut for stroker, and Shearer inframe pipes. I installed the reccomended main jets 145-165. I have #52 pilots installed and I believe cgl needles on the forth clip from the blunt end. This is the problem, full throttle at lower rpm the engine used to hesitate/misfire. I went up to 175 mains and the condition got better but never went away. Currently I have 190 mains installed and the problems is almost gone. I have checked the intake for air leaks with carb/brake cleaner none found. Is there any other suggestions main jets or do these strokers just love fuel. This is the first stroker that I've put together and I must say holy shit, this way faster than I thought it would be. Any other suggestions on the needles/pilots. I'm at sea level. Thanks Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 18, 2006 Report Share Posted September 18, 2006 I'd talk to the man himself, Jim. He could help you jet his porting more than anyone on here.... Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted September 18, 2006 Report Share Posted September 18, 2006 get ahold of wesw here on the site. hes prolly got more time invested in jetting a passion motor than anyone. Quote Link to comment Share on other sites More sharing options...
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