b18c1
finishing my block, just need pistons.
i know post to be bore the block to the pistons spec, but got ahold of block - no pistons, previous owner had it bored & honed 50 over for 81.5mm piston that supposedly - it had, took it to machine shop, actually bored 40 over(.016in).

my question what piston size would i need for that bore?
seems like honda oversize piston, not sure.

ok, any help/posts or recommendations/ suggestions welcome
thanx

 

Use mine for an example H23A1. Stock bore was 87mm. A .020 over piston comes out to 87.5mm. You can check http://www.jepistons.com to see what size you need even if they are not je pistons

 

ok, i will take a look at that.
thanx

 

Honda Oversize only go up to .25 anything after that, you need aftermarket or resleeves.
But check with portflow then have ITR .50 oversize piston w/ring.