4.8t

ok this is probably a stupid question, but. i took the head off my h22a swap that i'm about to do to throw on a new head gasket. i figured i would check out the bore while i was in there. i know the liners are odd, but do they require the normal cross hatch? from what i can tell there is no crosshatch. there are a few up and down scruffs here and there, very very slight though. there was a tad bit of oil residue in the intake mani. i figured that was just normal pcv oil film. i didn't know these things have a close deck design. anyway what does a good h22a bore look like?

red92si

A freshly honed FRM cylinder should be smooth as glass. No crosshatching. After years of use, slight vertical scuff marks will show.

Pic from Honda Tuning.

4.8t

SWEET!! thank you i was getting worried. i have a f23 for building but i don't have the money to build right this minute. so i need to run the h22a while i build it.

gstrudler

Unless there are deep vertical scratches, DO NOT try to have your block re-honed. There is a specific procedure and stones used for honing FRM, and is not necessary unless there are deep scratches.

NirVTEC

And be sure if you decide to have it re-honed, that they have specific H series experience.

Apex1972

x1000000000000000000000000000000000000000000000000 000000000000000000000000

4.8t

i'll be installing a headgasket and going on with it. well from what i can tell so far anyway.

Enzo15

Not to be off topic, but does that mean that if there are no deep vertical scratches you could technically just throw new pistons/rings in and call it a day? or am I wrong on my info?

CMVTEC95

The honing prcedure in case anyone wants to question their machinest. If standard size is still within spec of 3.4256-3.4260. A stone made for high silicon aluminum alloy 600 grit, follow with a felt shoe and sunnen silicon compound should be used. If over size is needed, the honing steps are 280-400-600 grits, then polishing. But make sure they have the correct stones for this type of material.