Gotta get my rear calipers off to do my handbrake shoes, and the bolts won't budge. Even the rotors are loosened up and ready to come off, but no dice on the calipers. I have tried:

Penetrating oil

An extension on the wrench handle (as much as I can get inside the wheel well).

Heat (not too much, though-- its a pretty awkward spot, and I don't like the idea of heating up the caliper itself with a blowtorch kery much)

Steady pressure on the wrench handle while whacking it with a hammer (first a 16 oz. houshold hammer, then a 3 lb. sledge)

All I have managed to do is blow out two 13mm sockets, bend a box wrench and slightly round off one caliper bolt.

I figure somewhere along the way, someone used some red threadlock on them
My next move is to run it in to a local mechanic on Monday morning and have him loosen and re-torque the bolts, so I can then take it home and do it.

Anyone have any other suggestions?

-EdM.
--
'90 240DL Wagon 'Lola' -- '72 1800ES 'Galadriel'