I patched an oil pan with J-B Weld once. Just cleaned up and applied on the bottom. Held for probably 50K miles - more really, It was still holding when I sold the truck.
Another car had a stripped spark plug hole. J-B Weld on that too. 'Course, I got a real good spark plug to put in there, and never took it out.
Both these places will run hotter than a heater hose outlet on the engine, unless maybe your coolant turns to steam.
Last edited by Weston Bye; 05-17-2007 at 07:06 PM.
Weston Bye - Author, The Mechatronist column, Digital Machinist magazine
~Practitioner of the Electromechanical Arts~
Theory & Practice-
Theory is when you know something but it doesn't work.
Practice is when something works but you don't know why.
It it dangerous to combine Theory & Practice;
nothing works and you don't know why.