I have completed a rebuild of my atomic four. I also added a heat exchanger. Both of the studs are leaking coolant. One of the studs had a helicoil installed. It comes out at the top of the thrmostat housing. Both the stud with the helicoil and the stud without are leaking. I've used permatex thread sealant, jb weld, permatix gasket sealant. During all of the atempts (six or seven) I've used heavy duty thermostat housing gasket material. I removed the head this past weekend, making sure that I got the threads clean before reinstalling with the thread sealant. Still leaks around the studs. Does anyone have a full proof solution.
Thanks.
Thanks.
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