Carb size?

[205dke187]

What carb size will be best for a CT power valve 350 engine? And how do I tell what size I have already?

[Motofool250r]

well assuming you are wanting the most topend and still have a usable midrange power/throttle control

the pwk39mm now most guys will bore these out to 40.5 or 41.5mm

the measurement is done on the inside of the bore where the slide goes in and out of the carb.

ESR now stocks freshly bored carbs, BDT motorsports does them too, and im sure there are more places.



if you want more of a woods style carb you can do a 38a/s carb bored out to 40mm or have this guy put in one these throttle plates like he does for dirt bikes
http://www.rb-designs.com/



for the absolute most top end your gonna have to steer towards a lectron drag carb in the 44-48mm range but they only meter fuel at WOT so its on or off.. P.S. i have one to sell you 44mm