WR400 piston rebore/siezed engine

Can anyone please tell me if I can rebore or only replate. Basically had one shop tell me that I can't rebore, but another shop offered me a 94mm piston kit, which would imply that one could as the standard piston is 91.8mm

I've got score marks on the piston and cylinder, but not that deep.


You can bore oversize (big bore kits), ut must replate after the bore. For me, it was cheaper to buy a big bore kit from Lukes Racing (or Eric Gorr's forward motion) than to replate and buy a new piston.

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