fun_on_the_sand Posted May 24, 2007 Report Share Posted May 24, 2007 (edited) I was using 450 mains on the original Mikuni 26 carbs. I did some new mods including porting and also added new PWK 28's carbs. What size on mains should I start with? Is there a diference on main jet size from band to brand? or should I start playing with 450-480 on the PWK? Thank you guys. Edited May 24, 2007 by fun_on_the_sand Quote Link to comment Share on other sites More sharing options...
bansheeyfz Posted May 24, 2007 Report Share Posted May 24, 2007 i would think your main would be way down from 450!!! Quote Link to comment Share on other sites More sharing options...
IROOST1 Posted May 25, 2007 Report Share Posted May 25, 2007 the pwk's are keihins. they use a completely different set of mains and pilots than the mikunis. I dont know what main to recommend since i havent installed my pwk 28s on my shee but my blaster is at 55 pilost, 162 mains with a pwk 28. get an assortment of mains and pilots so you can just play around. denniskirk.com is the cheapest for the high quality mains and pilots. or vitosperformance.com is good priced too. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted May 25, 2007 Report Share Posted May 25, 2007 If you think you need a huge main jet then start out at 165 or so. That is where I started at with my 400cc Drag ported 4 mill from patiot racing. I have pwk 33mm carb but that shouldnt make a whole lot of difference on the main jet. Quote Link to comment Share on other sites More sharing options...
fun_on_the_sand Posted May 25, 2007 Author Report Share Posted May 25, 2007 Thank you guys Right now I have 168 and feels little lean, I'll get some mains all the way to 180 or 190 and just play around with those. I appreciate your help, BANSHEE HQ ROCKS ! ! ! Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted May 25, 2007 Report Share Posted May 25, 2007 Thank you guys Right now I have 168 and feels little lean, I'll get some mains all the way to 180 or 190 and just play around with those. I appreciate your help, BANSHEE HQ ROCKS ! ! ! I would emagine that is is rich. No body runs a 190 with dual keihins. The only people that run that big are the Keihin 2 in to 1 guys. Quote Link to comment Share on other sites More sharing options...
MDS2106 Posted May 25, 2007 Report Share Posted May 25, 2007 Nobody runs 450 mains on stockers either.... Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted May 25, 2007 Report Share Posted May 25, 2007 Nobody runs 450 mains on stockers either.... I was thinking that too. At what point do you just take the main jet out and leave it out. :biggrin: Quote Link to comment Share on other sites More sharing options...
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