cold weather jets

matt08141972

New Member
Aug 13, 2014
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02 bored .040 with FMF exhaust and turbine core silencer lid on in 30 to 15 degrees above zero. Main and pilot jet sizes??? Please and thank you!
 
99% of the time, the stock 32.5 pilot is correct in the stock carb.
I've seen FMF's require from 270 - 310 mains depending on other mods, elevation and temps, you'll porobably be safe to buy those jets.


this will tell you what pilot..........
http://www.blasterforum.com/threads/adjusting-your-airscrew-pilot-jet.51060/


IF....you were jetted correctly and plug chop confirmed, increase the main jet 1 size per 20 degrees drop from what ever temps you last plug chopped at, then plug chop again in the current temps after increasing the main jet size.

plug chop: http://www.blasterforum.com/threads/how-to-plug-chop.53237/
it is the only way to be 100% sure