How strong is jb kwik weld?

Answer 1

i have used it to fix a loose exhaust valve guide in the head of a car and to repair a thermostat housing. I have found that if you prepair the surface correctly it adheres well and sets very hard.

However, JB does not suggest using its product when the temperature will exceed its maximum temperature for more than 10 minutes. Will the surface exceed 600F? Don't use it. JB Quick has half the strength of regular JB Weld. If you can wait for the regular stuff to cure, you will be way better off. Also, the JB quick is half of all specifications, including temerture and stregth of JB weld, so if you do it at all, do not use JB Quick, use JB Weld. Let me add that there are all type of epoxy products, and other products that are not epoxy. And In all cases, surface preparation is of utmost importance. Lightly sand, degrease with denatured alcohol, and be sure the surface is free of dust, and rust. Temperature will also effect most any bonding agent. The general rule is that the ideal temperature is set by the manufacture, and as the temperature goes up, so does the setting, and hardening times. A temperature that rises to sharply will more than likely harm the specifications of the product. If it is too cold,it could take a very long time to cure properly.