It will never seal with the bolt loose. Just keep torquing each heat cycle until it stops relaxing as the gasket will eventually stop creeping. I had same issues with valve cover
have you verified that the surfaces of head and block are good. I know they were surfaced but that doesn’t mean they were good or are still good
have you verified that the surfaces of head and block are good. I know they were surfaced but that doesn’t mean they were good or are still good
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