Hi, I need to know the stock head gasket thickness on my 77' 280Z.

I'm sorry I didnt have time to research it first. I'm ordering a nismo gasket and need to know wether to get a 1mm or 2mm.

Bump! Bump!

Just went out and measured a used head gasket off an L24. It measured .045" The new head gasket measures .0015" thicker.

FWIW... (Frank Honsowetz book)

The standard cylinder head thickness is 4.218". If the head is milled more than .030" below this then the cam towers need to be shimmed. One millimeter equals .03937" so this might be one way of keeping the cam gear at the proper distance. I've always thought that cam tower shims were used for that. A 2mm head gasket would be needed if your compression was too high such as with a non stock setup. (Diff head, pistons modified head, etc...)

IMO If you are all stock and have a head that is thick enough go with the 1mm.

Stock head gasket thickness is approximately 1.25 mm.

Thanks alot.

Brendan