Post by
Hijacker »
https://forums.nicoclub.com/hijacker-u9394.html
Wed May 21, 2008 4:03 am
Being a metal gasket, you can sometimes get an extra crush cycle out of them. But it's not a guarantee. I've heard of people getting 4 re-uses out of quality metal head gaskets, and then sometimes, only the initial install.
As far as the thickness goes, you need to talk to your machine shop about how much material was cut away to bring the block back to straight. The .4mm of thickness change is worth .25 C/R given that the rest of the block's dimensions haven't been touched (ie pistons, bore diameter, block/head mating surfaces)