I have a motorized bike with a stock engine. Found a bike online with a big ass exhaust, Reed valve, the red speed card, and it's ported. I switched out the body part(the middle section with the ports) between the two bikes so now the stock one is on the bike I bought. It still has the speed carb on it and a windowed piston, but now has stock exhuaust. I don't know why, but when I give it throttle, it like won't do anything. It idles fine and the throttle works then, but when the clutch is out I like don't really go anywhere. Like it sounds bubly or something. It worked completely fine before I switched the body Btw. Any ideas of the problem?
Bike won't run
- Thread starter Octo Ro
- Start date
Motor mods need to be balanced so they can work together. The porting and big exhaust would have a tendency to lean out your motor by increasing air flow, which means the speed carb is probably jetted for those conditions. What you are describing sounds like a motor that's way too rich. You more than likely need a smaller jet in the carb to match the stock porting and pipe.
My best guess anyway and good luck on it.
My best guess anyway and good luck on it.
Alright thanks. U think I should swap out the windowed piston too for stock or no?
The windowed piston is something your reed valve needs to function at full potential. Piston port motors don't have a window because the piston itself opens and closes the intake port. The reed valve does that job in a reed motor so a window is needed to more or less get the piston out of the way.
