Quote:
Originally Posted by crackerjac
I have the crf230 Zong clone, 65.5mm x 66.2mm bore and stroke. There are a number of big bore kits for the CRF230 but I was wondering if anyone has bored out to 67mm and ran the much cheaper off the shelf 67mm piston? it would only be about 233cc but still it a jump over 223cc. It would give it a bit more compression as well but nothing crazy.
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do you mean a cg250 push rod engine? thats not at all like a crf230 engine. Its a clone of a honda nx150 with a big bore to 230cc.. If its the overhead cam version I couldnt say im unfamiliar with that version of the chonda clone. That said being based on a 150 its allready pretty much oversquare, you could deck the head for a bit more compression but its allready under stress, so id be afraid of making it less dependable.