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modded 426ex

3252 Views 22 Replies 5 Participants Last post by  SlammedRanger
hello first time posting on the site. i have a 03 400ex and going to bore it to a 426 i have a stage 2 hotcam big gun rev box white brothers e-series slip on exhaust im having gt thunder hd head studs installed and a 88mm wiseco 11:1 piston and have the head mating surface trued up and a port and polish atm with a 10:1 piston stock bore i have 168/42 jets in the carb with choke removed and an opend air box with a k&n airfilter with a precharger need a little help on starting position with the jets ive read alot of forums and think a 180 185 and 190 should be what i try any advice?
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I'm sure slammed ranger will be along to talk jetting with you, he seems to have it down to a science from what I've read....
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