Hello all today I was trying to reinstall my nuts onto the mounting studs for the block and accidentally cross threaded one thread. It ended up spinning the stud instead and torqued and cracked the center iron outside a little bit. How detrimental is this can I jb weld it and run it. My biggest concern is it growing if I end up using it. Last picture is reference to where it seems it's cracked at.

 

you'd have to pull the mount off to epoxy it properly but honestly i would try that before losing any sleep. the only way to properly fix it is to rebuild the engine. i know which i would try first.