CG Road to 250CC

[XLsior]

what is the case opening diameter or cylinder skirt outside diameter?


Finding a bigger piston with a 15mm pin isn;t to big an issue aliexpress usually has those options if you look...


The big issue is whether or not a bigger jug will actually fit in a CG125 case.


TBH it would be better to just find a CG250 complete engine and do a total swap rather than trying to modify a smaller displacement engine.

[ego]

Originally Posted by XLsior

what is the case opening diameter or cylinder skirt outside diameter?


Finding a bigger piston with a 15mm pin isn;t to big an issue aliexpress usually has those options if you look...


The big issue is whether or not a bigger jug will actually fit in a CG125 case.


TBH it would be better to just find a CG250 complete engine and do a total swap rather than trying to modify a smaller displacement engine.

The country, in which I drive, finding a proper cg250 engine is nearly impossible. And you wont be able to pass inspection if you do. While giving it more engine displacement isn’t a problem.

Didn’t disassemble it before but 65.5mm fits without any modifications, so 67mm would fit, even if some little modifications are required. Making it fit isn’t the problem I believe.