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Ive got a single 38mm mikuni carb with open air box. that i cant get jetted quite right. Its starts up fine idles fine and pulls fine until about 3/4 throttle to full throttle. Acts like its starving for fuel but pull the plugs and they say rich. Im currently running a 52 pilot and 410 main. Info to motor build is listed below. Any help would be greatly appreciated! 

4 mill crank with welded 115 rod
-66mm 795 series pistons (cylinders have been ported for the crank)
- Boss cool head with 19cc stroker domes also been ported
-chariot 2-1 carb setup with a 38mm mikuni carb.
-fmf gold series full exhaust.

  • 2 weeks later...

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