View Full Version : Jetting for Pollini 153cc big bore kit ?

06-07-2009, 12:23 PM
Does anybody have a good idea of a (safe) starting point for jetting the Dellorto 34mm carb (stock airbox) when running the Polini 153cc Big Bore Kit ? (pilot and main). Thanks, -joe-

06-08-2009, 07:02 AM
Dyno'd in with Air/Fuel meter using 158 jet in the 34mm carb but had a Piper Cross foam cone filter on it. Foam cone made just a hair more HP... 158 would be plenty safe on stock airbox...down one might be a stretch.