Cory9584 Posted January 26, 2008 Report Posted January 26, 2008 I have a 4 mill with 65.5 pistons, 20cc domes, and carbs measure 1.25in. It has power but pops every so often and the plugs are soaked. Im gonna check what jets in it tomorrow but about what jet should i need? Quote
Cory9584 Posted January 26, 2008 Author Report Posted January 26, 2008 btw my elevation is 190 feet and it has fmf pipes Quote
00tbanshee Posted January 26, 2008 Report Posted January 26, 2008 what kind of carbs you have and what kind of port job is it? Quote
locogato11283 Posted January 26, 2008 Report Posted January 26, 2008 yea, what carbs? keihin? mikuni? size? pull the bowl off and see what your jets are. if the pilot is numbered like 25 or 27.5 and the mains are like 280,290,300 then its a mikuni carb. if the pilots are like 45,48,50 and the main is 160,162,165 then its a keihin. Quote
Cory9584 Posted January 26, 2008 Author Report Posted January 26, 2008 the carbs are mikuni round slides that measure 1.25in id, and for now its just stock porting but the guy who did my cylinders raised the ports 1mm Quote
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