Oversize piston kits

[davomoto]

I have a CB77 cylinder that is already 1.00mm over, and needs to be rebored. The only larger piston kits that I have seen are 3.00mm over. Is there anything in between 1.00mm and 3.00mm available? Where can I get them? Will it require a big bore head gasket as well? I believe that it only needs.25 or .50 larger to clean up. I do have another cylinder that I can use if necessary. It's either standard or .25mm over. Thanks in advance.

davomoto

[305racer]

I have a CB77 cylinder that is already 1.00mm over, and needs to be rebored. The only larger piston kits that I have seen are 3.00mm over. Is there anything in between 1.00mm and 3.00mm available? Where can I get them? Will it require a big bore head gasket as well? I believe that it only needs.25 or .50 larger to clean up. I do have another cylinder that I can use if necessary. It's either standard or .25mm over. Thanks in advance.

davomoto

I dont believe there is anything in between but I could be wrong. As for the 3mm over kits I havent seen any forsale in awhile and the last one I saw was expensive. I got a line on 350cc kits but they require ALOT of machine work.