volcrano Posted May 2, 2007 Report Posted May 2, 2007 hey guys-i have a 99 'shee with .20 over bore,vitos super stock forged pistons,wb boost bottle,290 mains,3rd needle,stock pilot w/air screw 2 1/4 turns out,fmf fatties with powercore 2 silencers.Airbox is stock with snorkel removed.The bike pulled superb with that set-up but plugs looked a little wet.I should mention that the plugs looked good when i ran castor 927 at 32:1 and now i have amsoil dominator in there at 40:1.That oil is thick and says to run at 50 :1 but im to pussy to try it but-anyway-im 'bout to go back to the castor and check it out,but the reason i ask.I just installed v-force 3s and now it seems a little sluggish,like not as snappy and powerband hit kinda weak.I mean it still picks up but it used to yank your ass.Carbs are tight,choke tube on,used new gaskets and thats about all i did.Im wondering if the amsoil oil is like flooding the plugs with fuel now because of the increased velocity from the 3's :shrug: .Has anybody had to lean out-or richen up for that matter.Im wondering if i should try the castor and run it again.Could the amsoil have a part of this now?Does this sound like it makes any sense?My buddy has a 94 shee with same mods(xcept he STILL!!! has factory bore and pistons) and his shit pulls out of idle better than mine and hits like mike tyson(15 yrs. ago),but he has v-force 2s and 280 mains as opposed to my 290s. :yucky: I live in ohio and just seeing if anybody has dealt with a re-jet with 3s for best performance,since the instructions say you usually dont have to.And yes i know what usually means.Thanks for reading homies-hope you can help!!!!!! Quote
fastbanshee8 Posted May 2, 2007 Report Posted May 2, 2007 I've got V-Force II's, and I didn't have to do any rejetting, when I installed them. When you changed your mixture from 32:1, to 40:1, you richened up your jetting. Drop your main down a size or two, and that should help. Quote
gregbowler Posted May 2, 2007 Report Posted May 2, 2007 I had a mid-range pop after installing them. I had to lean the needle one clip. Problem fixed. Quote
dajogejr Posted May 4, 2007 Report Posted May 4, 2007 Generally...VForce reeds richen up the midrange and allow more fuel/air into the system. Some people have to lean the needle one clip, other's don't. I say lean it one clip (move it one position to the blunt end) and see if that fixes it. Quote
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