Big Tobe

Perhaps your right, I think I'll take your advice and get a new cylinder, second hand most likely. Thanks for your help though Tobe

Sorry about the late reply The current bore is 57mm and the scratch is about 2-3mm deep, the previous owner told me that he had bored it from a standard 56mm Is there any chance I could still rebore it? Thanks.

Hi vez, thanks for your quick reply, the only problem is that it has already been bored, also the scratch is fairly deep on the inside of the cylinder. Is there anything else I can do apart from buying a new one?

I was wondering if anyone could help me, The piston rings on my bike snapped and have scored the piston and cylinder, could I replace it with a bigger cc engine? Thanks.