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The only thing that concerns me is that this very bolt came lose, and I have no idea why, could have been not properly torqued by the builder. Would locktite hurt anything other than making bolt removal more difficult in the future? The helicoil idea is tempting too. I don't want to do any unnecessary work but want it fixed right. Thanks for the input.



You know that on a bog block with steel shim head gaskets you have to retorque after first warm up. If not you will probably blow the head gasket between two cylinders. Maybe this is the issue.

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