Originally Posted by cboy
I've considered using it as a filler on metal brackets and such that I want to powder coat. I'm not sure, however, if it would take the 400 plus degrees in the oven (anybody know for sure?). But I think it would work for a purpose like that in terms of vibration and body flex where it might not be advisable on a large thin panel.
Cboy check out Clifford Engineering they use JB Weld to lump port Chevy Six's on the intake side for high performance. I have used it on 5 Hp Briggs kart engines on the intake side to reduce the size of the port . Never had a problem with it. It is supposed to be good for 500 degrees.