jwillie0950 Posted September 9, 2013 Report Share Posted September 9, 2013 Ok so my mods included an a & d cool head with 20cc domes, fmf fattys with powercore silencers, k & n air filters bolted straight to the STOCK carbs, boyesen power reeds, bored .020 over with wiseco pro lite pistons. Ive read alot about jetting before posting this and from other similar set ups a good place to start for main jets would be 310's even 300's? just rather would start rich then to lean, but where i basically have no idea is will i need to adjust the needle and change the pilot jet as well? Just want to have a good starting spot with this and no harm done to my freshly rebuilt engine. Im 700 ft above sea level and ride from temps anywhere from 70-95 degrees Quote Link to comment Share on other sites More sharing options...
Free yellow banshee Posted September 10, 2013 Report Share Posted September 10, 2013 320 mains, 27.5 pilots, stock needles in 4th slot from the top. Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted September 10, 2013 Report Share Posted September 10, 2013 I was running .50mm over (64.50mm) unported with FMF Golds, VF3's, PD coolhead 20cc, k&n pods, stock carbs 290main, 27.5 pilot, needle on middle clip, 1.5 turns out onthe pilot air screw. I ran this set up for 3 years, and every plug chop was a perfect chocolate color. Quote Link to comment Share on other sites More sharing options...
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