04 450R jetting question -CRF's Only Forums

hyperflow · by **hyperflow** » Fri Jul 20, 2007 3:53 pm

What should i be running for jetting on a 450R with full FMF powerbomb exhaust, Boysean QS2 and a rev box.

Asmith · by **Asmith** » Fri Jul 20, 2007 4:08 pm

What elevation and temps are you jetting for?

hyperflow · by **hyperflow** » Fri Jul 20, 2007 5:28 pm

im at sea level and jetting from 15C to 35C, not sure what that converts to in F

Asmith · by **Asmith** » Fri Jul 20, 2007 6:02 pm

Main 168
Needle 4th clip
pilot 42
fuel screw 1 3/4

hyperflow · by **hyperflow** » Sat Jul 21, 2007 8:18 am

what are stock pilots and main jets in a crf? This is my first time with a crf just had trx450r's