Checking numbers...Non-overbore stroker

[naviathan]

I've been trying like hell to find a way to build a stroker without overboring the block or spending a mass of money on custom pistons. So far I've been working on pistons for obvious reasons. I've found two candidates but only one seems feasible at this point. The RB26 and RB25 pistons seem to have the right bore at stock size and pin height to match, but as they're not sold in the US those are out the window. However the 4G63 out of a Mitsubishi Eclipse is an 86mm bore, 21mm pin diameter and 34.7mm pin height piston. So far these are all the specs I can get from it, but they seem like they would work with a 2mm head gasket. I realize they'll protrude above the deck over 1mm, but if the top compression ring is down far enough this shouldn't be a problem with a 2mm MLS head gasket. Being that they're primarily turbo pistons they should have some sort of dish that might enable shaving some lip off the top of the piston to clear some more. This is just a though, but I'd like some feedback on this. Does anyone have anymore information on these pistons?

[(goldfish)]

I don't remember exactly, but I seem to recall Norm built his with stock pistons that he "shaved" down. If it's not here, I know i's in the zcar archives.

[1 fast z]

Yea just take a stock set of dished pistons and turn them in a lathe, pretty simple and been done lots of times.

[naviathan]

Really? Wow, so the pin offset problem can be fixed that easily? Sounds good to me.