Has anyone used the JE Pro Seal MLS head gasket for high boost?

[twicks69]

Contemplating head gaskets again for my race car, normally I just run ARP 11mm CA625+ studs with an OEM MLS head gasket, and my shouldered dowel stud bosses in the head. This setup has 8 years on it, and I am at the point of pushing coolant above rad cap pressure (32psi rad cap -- GM style water neck with Stant 10393). I know with my current setup it is mainly deck flatness causing water pressurization, but I am looking at the future and another fresh motor.

Boost is going to be between 50-70psi, 1/2" CA625+ studs with my 1/2" shouldered dowels, fresh block, fresh head, etc.

Does anyone have experience with the JE pro seal MLS head gasket? The gasket is available with the same thickness of 1.3mm as the OEM MLS.

 

[donniekak]

Are these available now for our engines? When I was looking at gaskets for my build a few months ago, they were only offered in Evo 4-8. Or, can the later evo gaskets be used on our blocks/heads?

 

[twicks69]

Darn, you are right, I only see them for Evo 4-8.

Oh well.

 

[jed344]

At that high of boost would o ring and a composite gasket hold?