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drc02

port polish / jets

4 posts in this topic

I had the head on a 01' 426 port and polished. The carb is stock, no mods or add on's, and fmf power bomb head pipe w/turbin core end. What would be a good starting point for jettting. Ive lookd through a lot of posts cant find much other than jet kit recomendation. I have a zip ty fuel screw and boysen pump cover i will try after i get jet hurdel cleared.

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Porting may help with the flow somewhat, but it shouldn't change the A/F ratio.

If the bike runs fine now (or before the head porting) then you probably won't need to change the jetting.

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