139QMB 80cc BBK Install Issue
I have a basic scooter rig with a 139QMB 4-Stroke. I rebuilt the engine with new gaskets, CVT clutch & band, variation w/ 6.5g roller weights.
I used the ATMT1-008 Glixal 47mm BBK, and added a cone cold air intake.
The stock carb is 18mm and originally had a 30 pilot jet and a 78 main jet.
The valves were adjusted to .004
More details below.
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