Hi Guys,
I'm wondering what bore head gasket to get with .25mm over sized USDM P73 pistons? Does anyone have experience with this?

The only thing I see online is 81.5mm bore head gaskets. Will that work for this build? I measured my stock head gasket and the bore was 81.6356mm.

When they list a head gasket at 81mm is that the bore on the gasket itself or the pistons it will support?

Thanks in advance!

 

stock is fine, there is no clearance issue. done it before

 

Stock fits just fine.. Even the factory service manual doesn't call for an oversized gasket on size over pistons. The factory gasket has enough room that it isn't an issue

 

Thanks guys!

 

Honda stock head gasket is actually 81.75mm, so you're good to go.