Changing the front engine mount and the nut on the crossbolt is stuck. I used PB Blaster and broke my 3/8 breaker bar on it. My impact won't turn it, then again, my impact is a POS Campbell Hausfield... it even has trouble even taking off lug nuts.

What worries me is that bolt doesn't even turn. It's just a crossbolt, I don't think it's indexed or has a key or anything. If I don't use a backing wrench on the head of the bolt, and I put torque on the nut, the entire bolt/nut assembly should turn. It doesn't look corroded or anything.

Any ideas?

 

I think that nut is not supposed to turn. I think it's part of the bracket. You should only be turning the bolt on the other side.

 

yup, exactly, it is welded to the bracket.

you are supposed to take the bolt off.

 

noob mechanic doing noob bish things, lol.

If that breaker bar is a craftsman, turn it in and get another free of charge.