Time for a top end rebuild  By  jaciche (Read 130 times)

Unfortunately, my 150cc scooter is burning oil. I can smell it burning from the exhaust and a bit of white smoke is coming out when I start it up. The engine is stock, there's 8k miles on it. I'd like to buy a top end kit and rebuild it later this year, but I have a few questions:

1. Should I remove the PAIR exhaust system when I rebuild the top end?

2. 150cc or 172cc top end?

3. If I go with a 172cc, will I need a larger carb or can I just increase the jet sizes on my stock carb?

4. What are the good quality piston kits on the market?

Thanks for your help