Originally Posted by
ginger
im using a go 7port(not the go GX series)on my jammin X1Xcr,power is great but seem to get very weak on the bottom after 2 to 4 laps on the track,i cannot do a quick simple 180 degree turn with it,i just want to have a snappy acceleration,im using a dynamite 053 pipe .5mm head shims,fioroni carbon clutch shoes and 1.1 clutch springs gearing on my buggy is 48t spurgear/14 clutchbell..any advice to make this engine more punchy on the bottom end?
Have a peek down the carb throat and tell us if you have the long or short low speed needle in your motor.
If you have the long needle, I suspect you are too lean on the top end.
This senario is well documented on here, as are the different needle lengths.
The short and long needle carbs tune quite differently. If you want more info PM me for details on needles and tuning.
Try richening the top end 1/4 turn and retune from there.