I have a question for the guys who build all motor applications. I just picked up a GE sleeved gsr, and it is currently at 85mm. The motor dropped a valve on cylinder 1, and obviously it has knicks and the like in it. Im hoping i can have it bored to an 87mm and be safe. My question is about pistons though. Ive been doing some research and havent been able to find a company that produces 87mm pistons for a gsr. Would the application for the pistons actually be for a gsr, or since the block will be 87mm (2.0), would i have to choose pistons for, say a k20 or b20? I'd like to keep my compression in the mid 11s to 12s if that helps at all. Any help is appreciated!

 

i would assume that at that point you have to look for a b20 piston since gsr rarely( if ever) go to 87mm.
i dont know if its gonna be safe or not,
b20 uses vtec head regardless.
are the rods stock gsr or aftermarket? if they aftermarket which would be safe to assume then you should have better luck finding the pistons.