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I was in the parts store the other day and I spoke to the "Parts Guy" about the hole in my cat.
He got an idea and zipped down an isle, and picked out a small brass fitting. It was about the perfect size, but it was threaded, and the whole in the cat is not.
Then I mentioned something about epoxy and he ran over to another isle and pulled a package of JB Weld off the shelf. The package does not list much info about high temp. applications, but the guy said it was the perfect epoxy.
OK, so far so good. The epoxy held tight to the dirty and rusty cat., and after a couple of days, the fix is still in place.
One suggestion I would make is that the epoxy would be easier to work with if it was thickened with some micro ballons (or, what ever it is people thicken epoxy with).
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