[snbush67]

Originally Posted by Henry Schmidt

To expand on Pete's Permatex question:
While Permatex Ultra Grey may fall short of the Dirko products (Grey and HT) it looks like Permatex OPTIMUM GREY may compare favorably with Dirko Grey HT.
Tensile strength (which generally refers to break-away resistance) is lower.
Tensile strength and elongation will create a reasonably accurate breakaway resistance.
This is important because you will inevitably have some squeeze-out when joining two machine surfaces. You do not want squeeze-out/break-away traveling through your engine.

I have only used 574 so have no experience with the other products mentioned. It probably comes down to preference but would you recommend 574 for the novice builder because it doesn’t cure as long as it’s exposed to air, and thus reduces the risk of squeeze-out/break-away traveling through an engine?