Originally Posted by 97grnlude
Your not supposed to use forged pistons in a stock h22 block. the stock sleeves have a nikasil coating on them that makes them really soft. It also doesn't need to be honed either
it's not Nikasil. it's Fiber Reinforced Metal (FRM). Nikasil is a coating, FRM is the actual liner material unlike the B series' iron sleeves.
FRM is basically aluminum infused with ceramic which provides excellent heat transfer capabilities above steel, with the self-lubricating properties of ceramic of which also helps to increase durability.
i have never seen first hand a trashed FRM H series block due to forged pistons. i have seen a couple of pics, and those seem to be due to improper sized pistons. the most famous pic is actually of a B-series block with improperly sized pistons installed.
I have Wiseco pistons installed in mine with no problems after 40,000+ miles now.
as for honing, you are supposed to hone the cylinders with 600J diamond cloth with a 60 degree crosshatch... it will not leave the crosshatching as it would on other blocks with honing stones.