After changing the rear discs on a few scoobys classic new age and hatch, and having the the bolts lock up after a couple of turns I had an idea.
The bottom bolt on the caliper on my hatch went solid after 2 turns so after every f word I know made no differance at all I thought can I cut the bolt head off with a 1mm disc in the grinder ? I turned the bolt so it was not solid and then cut the head off, This leaves thread to put 2 nuts and tighten so you can wind the bolt through the caliper using the good end of the bolt
I did run a die down the bolt before starting to wind it out but it worked a treat and even if it doesent you can still drill it out

hope this helps

Phil

 

If you're gave put some heat on it it would have come undone but yeh that's another way nice one at least you got it out!