Hi guys.
I have a 1982 series 2 rx-7 with 4 wheel disc brakes and I'm having troubles replacing the pads as I can't get the piston in far enough into the caliper to allow for proper installation of the pads.

Is there some sort of special tool or technique required to get the piston in place?

Cheers.

 

The piston has to be twisted back in. There should be two notches on the face of the piston this is where to points on the tool go. The tool looks like a square box that is open a 3/8" socket wrench will fit on the openings there will be points on the tool that will fit in the notches on the poston then just twist it back in. You should be able to pick up the tool at any auto parts store.

 

Your question has been covered in here: https://www.rx7club.com/1st-generation-specific-1979-1985-18/whats-easiest-way-compress-caliper-894381/