Ive been trying to change my rear brake pads on my 1983 280zx. the passenger side went on fine, but the drivers side is giving me some problems. i cant seem to push the piston in far enough to fit the new pads. the brake piston wont move in at all!?!?! ive been using a C-clamp and it worked perfect on the right side but not the left. i need some help/advise!?!?

thanks in advance dudes -

 

You've likely destroyed both calipers...

It pays to read the FSM. You don't clamp them in, you TURN them in.