blackandyellowshee Posted December 23, 2007 Report Share Posted December 23, 2007 Hey, I am putting a cool head on my quad, and a timing plate. I currently have fattys, and v force 3 reeds. I am running 290s and 27.5s. I realize that i will have to run higher octane gas because of higher compression, but will I have to rejet? thanks Quote Link to comment Share on other sites More sharing options...
TJ10 Posted December 24, 2007 Report Share Posted December 24, 2007 Hey, I am putting a cool head on my quad, and a timing plate. I currently have fattys, and v force 3 reeds. I am running 290s and 27.5s. I realize that i will have to run higher octane gas because of higher compression, but will I have to rejet?thanks You may have to go a size or so larger on the mains (300) and adjust your airscrews. I've seen alot of guys running similar mods on 25s so your airscrews should have enough adjustment imo. Quote Link to comment Share on other sites More sharing options...
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