Posted by Steve@Advance on August 25, 2022 at 11:15:59 from (47.37.93.96):
In Reply to: Replacing head gasket posted by Dave H (MI) on August 25, 2022 at 07:37:46:
Always! Unless it's a rare antique and a gasket can't be found.
And clean, clean, clean, and clean again down to bare clean metal!
Chase the bolt holes with a tap, wire brush the bolt threads, use sealer on any through bolts that go into the water jacket.
Why was the head off? Was the gasket leaking? If it was, best have the head checked for level.
When going back on, torque to spec by the book, then run up to temperature and retorque hot, also readjust the lifters.
I never liked using sealer, a thin coat of aluminum spray paint is an old trick the seals but does not float the head or squeeze out covering coolant or oil ports. Too much sealer will cause the bolts to lose torque over time as it squeezes out, not good!
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