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Discussion Starter · #1 ·
since the rings r failing in my 95 300ex ima go ahead and bore it out to a 330cc... wat jetting size shoud i use???
thatnks for help in advance
 

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I would say with the 330 kit you will have 11.5:1 CR so 135 to 140 main should be fine back the air screw out 1/2 turn reset the idle. you may have to step up the slow jet to a 40 too.
 

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Discussion Starter · #3 ·
the kit im getting it says it has the stock compression ratio.. would that change the jetting???
 
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