Leaderboard

IIRC its the same for both sides, I use a combo wrench with a screwdriver in the boxed end to use to turn the piston back in. No need for a special tool. Clockwise should be threading the piston in

The first-gen rear calipers get a lot of negative feedback on various forums. My two vehicles ('92, '93) have had ZERO problems with the rear calipers. They're easy to service, they do not need "special tools" to "wind the piston back in". I replaced the rear calipers (using stock-replacement "rebuilt" calipers) on one vehicle because of all the bad publicity; but nothing changed. Swapping to the later calipers is a lot of work for no benefit. It's possible for calipers to become seized or "sticky"; aluminum calipers are worse in that regard than iron calipers. So, sure, you might need to rebuild or replace calipers that have an actual fault. Merely swapping good "first gen" calipers in proper working condition for good "second gen" calipers in proper working condition is not really an upgrade in my opinion; and if you're giving up the park brake, it's a downgrade. And probably illegal, too. If you're having problems with poor braking power, and a hard pedal...you probably need to replace the booster not the calipers, and properly bleed (flush) the hydraulic system.

I did the 94 swap on my cars 100% for the sake of reliability, nothing else. the rear cables are different, but the front one still works as does the pedal the rub is there is a bracket spot welded to the rear frame rail, drivers side that needs to be drilled out and swapped with one from a donor car. I wanna say I just used self tapping sheet metal screws to put the new bracket on my car, not ideal and one of these days I should go back and weld it on now that I have the ability but its been holding up fine since I did the swap in 2008 or 2009

I don't think it's much of a performance benefit, more the caliper design

I was able to make them work on my 91, but I don't remember exactly how I did it. I think it involved swapping the e brake pedal, some cables and some modifications to the brackets on the calipers.

Interesting source of the problem. Glad you found it. These vague issues are always a huge win when you get it sorted out.