boohilux Posted November 25, 2012 Report Share Posted November 25, 2012 421 seval cub using stock 26mm carbs mods are fmf gold series pipes pc2 muflers +4 timming boysen pro serries reeds k&n filter no air box elevation 1200ft temp 25c what is a good starting point for the main jets thanks Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted November 25, 2012 Report Share Posted November 25, 2012 Around 320-330main. Quote Link to comment Share on other sites More sharing options...
rjdgriff Posted November 25, 2012 Report Share Posted November 25, 2012 At 1000' and 75* I was running a 300 in my stockers with t5 pipes vf3s +4 timing airbox with proflow (no lid) cool head and 24cc domes Quote Link to comment Share on other sites More sharing options...
maskmanLS6 Posted December 1, 2012 Report Share Posted December 1, 2012 I would say youll wind up between 330 and 350. with a 30 to 32.5 pilot. Quote Link to comment Share on other sites More sharing options...
rjdgriff Posted December 1, 2012 Report Share Posted December 1, 2012 Had a 27.5 pilot in mine Quote Link to comment Share on other sites More sharing options...
vulvafan537240 Posted December 2, 2012 Report Share Posted December 2, 2012 32.5 pilot is HUUUUUGE!!! id say no more than a 27.5, maybe a 30. Quote Link to comment Share on other sites More sharing options...
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