- Feb 24, 2014
I would think that solid copper head gaskets will not compress or shrink over time.
Composite material gaskets will, requiring a re-torque until the material reaches a chemical/thermal point of stability. This probably requires a certain number of engine heating and cooling cycles.
The norton does not have copper. And the head bolts are not Holo-Krome either. They are after we replace them on engine rebuilds though.
So definitely don’t skip out on a head torque.