Quote:
Originally Posted by Frankie Zee
In my experience, JB Weld does not work for exhaust repairs. Could have been a problem with my usage though. I was using it on some newly purchased headers and and was not able to let the car sit for 24hrs.
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You did it wrong, JB doesn't tolerate extreme temperatures well until it cures. You could probably fix a Space Shuttle with some JB Weld (and maybe thermal tape.) A discussion like this came up on Something Awful's car subforum, and three or four people mentioned JB Weld oil pan repairs that held up for several years and outlasted their cars in some cases.