Spark Plug Re-Thread Tool
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Join Date: Jul 2006
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I bought a car once that came with a stripped out spark plug hole. I wasn't ready to pull the head, so I fixed it with a thread repair kit made by Loc-Tite. If remember right, it was a two part epoxy similar to JB Weld and a release agent. I was a little skeptical about it working on a spark plug hole, due to the heat and periodic removal of the plug, but it held up fine until I tore the engine down a few years later. This was on an iron head, so I don't know if the results would be the same aluminum threads.