Originally Posted by SoldierBoy
Are parts inner changeable meaning can I take a 50cc China girl take the jug off take the piston out and the rod buy a rod a piston and a new cylinder that's for an 80cc and use it that way I bought the wrong kit :'( I wanted the 80 not the 50
No you can't just randomly change parts.
The is no such thing as a 50cc 2-stroke, they are 48cc.
There is no such thing and an 80cc, they are 66cc.
An expansion chamber on a 48cc makes it damn near as strong as a 66.
An expansion chamber on a 66 gives you even more.