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MossboysRacing
04-08-2011, 07:23 PM
I am almost done building my new XC 450er. Im trying to figure out what jets to put in. Being that the motor has never been started im looking for a good starting point with the carb. the motor has:
cylinder works 480cc, stock compression, Hrc Kit, HMf full Natalie exhaust, stock fcr off a stock bike.
I'll be putting the hrc needle in the carb, im just up in the air with what jets to install. Any help will be greatly appreciated.
I just retired my 250r (310) from xc after 15 years. Im still keeping it, but decided to do a frame up build on the 4-stroke.

IMSROLL450R
04-08-2011, 07:25 PM
I'm guessing 170/52 and probably almost 3 turns out......