I have never had a problem with copper gaskets where the mating surfaces were
correct. Attempt to retorque resulted in little or no motion on the torque
wrench. Of course my sample size is somewhat limited.
Joe (A)
>Not being an engineer by profession...
>
>Steve: you have a better engineering mind than I... So, if you are
>befuddled then I am concerned....
>
>I'll give you my thoughts... the very definition of "re-torquing" indicates
>that the original torque/clamping force has changed. Why would it
>change.... I suspect that composition gaskets of anykind may "settle" and
>compress. Maybe as the engine heats up and expands the only thing that can
>actually change is the gasket thickness and hence it gets squeezed/deformed
>to a new thickness never to completely come back to original.
>Not so with copper HG's. I have never re-torqued with copper.
>M. Dunst
>Gasket Works USA, LLC
>626.358.1616 voice/page
>626.358.7971 fax
>www.headgasket.com
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