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Originally Posted by tylerlough  I believe my carb is the limiting factor on my 80cc because it will rev up to 7000 rpms for a few seconds then just bog down. I haven't tried to move the clip down to richen the mixture, that may help.
It'll keep gaining horsepower up to a certain rpm, then start dropping off. If the carb can't keep up then power will really drop off.
My bike isn't together right now so my help is limited. |
Your engine is only going to flow as much as your carb and exhaust allow. The stock carb is quite small and if you have cleaned up your intake and exhaust ports and gaskets the engine will allow more airflow, especially with a chamber. Running the stock 14mm carb you are limited to the airflow, so you are limited to fuel so max of .65 or .70 jet size. I run a 18mm carb with a chamber and flow much more air and therefore I use a .85mm jet in a 48cc engine, and could probably go up one more size. My engine now pulls throughout the entire rpm range and does not flatten out a max rpm's...