Gasket sealant?

[Barry R]

Just rebuilding my 1923 Buick engine, do I put some sealant (hermatite blue) on the head gasket ?

 

There is also a thin 0005 paper like gasket between short cylinder block and crankcase. Should I put sealant on that as well?

[Stude Light]

I like using Permatex Copper Spray a Gasket sealant on the head gasket. I might use a very thin layer of Permatex Ultra Black on the paper gasket. I would normally use Permatex Right Stuff on that paper gasket but it cures pretty quickly so you need to assemble it quickly if you use it. If you can get it together and bolted down in under 10 minutes, I would go the Right Stuff route. I hate having gasket leaks on a freshly assembled engine and these products have not let me down.

Scott

[RansomEli]

I, too, swear by Permatex Copper sealant. 

[Larry Schramm]