ahhh right yeah i saw the turbo bit on the wrong side lol

yeah all the later carb CVH's have leanburn, im not too sure what the pistons in the earlier type are like?

on the other hand if you want to go up to a better engine ive got an XR3i engine, coming out of an orion some old boy has owned, just done a bit of a service on it and its running as good as they get, no smoking or anything, and does 120 with ease and plenty more throttle to go, if your interested?

not much u can do to the carb models

what size is yours aswell 1.6 or 1.4?