[Supras] Sealant for head gasket?

[Rich]

Copper spray eats, and ruins, the coating on the Cometic gasket (works 
fine when reusing Greddy & HKS though).  First hand knowledge...
-Rich

Bill wrote:
> Hey guys,
>
> Well, the Supra rookie (trying for Rookie of the Year, though...) has his Cometic 2mm head gasket in hand. They recommend a dry installation. To me, this seems like begging for a leak, especially with the different rates of thermal expansion going on.  Any thoughts? Also, I know everyone is torquing them higher than spec. I'm okay with that, to a point; however, when I look at the thread pitch on the head bolts, as opposed to, say, a 350 Chevy head bolt, I have to wonder if the spec is not, at least CLOSE, to okay. Seems like winding up to 75-85 foot pounds on that fine a thread would over-stress the bolt, threads or head, as it would be creating a lot more vertical force than on a similarly torqued American head bolt with more coarse threads. After all, bolts are just circular wedges. I know there are engineer types out there. Whadda ya think, over? Thanks...
>
> Bill 90 N/A
>
> _______________________________________________
> Supras mailing list
> Supras at supras.com
> http://supras.com/mailman/listinfo/supras_supras.com
>
>
>