ORIGINAL: Richs MT2
i read some article about one guy in the coubtry who "resizes" piston sleevs crushes them or something.
if you really had to do it i think researching the O.D. of your current piston sleeve and try to match it to another piston and sleeve from a larger displacement engine. i might look into this just out of curiousity i think you would probably end up boring the engine casing to fit and you would definetley have to take into consideration connecting rod travel as wel as stroke.
I have also heard about places that 're-pinch' the sleeve. I don't have any links or documentation, just 2nd hand info. The way I understood the guy, they take your worn piston and sleeve, measure the piston and then re-pinch the sleeve accordingly. I don't understand how or with what, just that somebody does it.
This is not a performance upgrade though, on the contrary it would seem. If the piston is worn(being aluminum, I would think it would wear before the crome plated sleeve), and you re-pinch the sleeve, then you would be losing displacement. Sounds like a cheap rebuild, in my opinion. If I remember right, he said it was only about $15 plus shipping.
avg_joe