Has anybody succeeded in rebuilding the small wall (that always breaks and is the cause of blown seals) that holds the coolant seal? just want to see if there is a way to fix them besides welding and grinding a new one.

 

I'm not a builder, but I think most will tell you it's junk. Welding cast iron is tricky at best. If you get a weld to stick it's going to be warped somewhere else.

 

Not fixable. Try and source a used iron.