We cracked the top right nipple on my radiator tonight. Its not broke off just cracked on the top were hose comes in from the fill reservoir do you think a 2 part epoxy will hold it form leaking? Does anyone know any tricks? I am sure It will cost an arm and a leg to replace...

 

I'd try expoy or something like that first. Make sure you get something that will work in a heated enviroment.