As you all are likely aware, 4 piston calipers have two different sized pistons. The larger are supposed to be leading and smaller trailing from what I understand.
My question, how big of a deal is it that they are in a correct orientation? I can't get the crossover pipes out without destroying the fittings.
4 piston caliper orientation
- amd is the best
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- Joined: Wed Feb 27, 2013 12:25 am
- Location: Schenectady, NY
- amd is the best
- Posts: 1431
- Joined: Wed Feb 27, 2013 12:25 am
- Location: Schenectady, NY
Re: 4 piston caliper orientation
Anyone? 

- audifreakjim
- Posts: 2142
- Joined: Sun Mar 03, 2013 3:00 pm
Re: 4 piston caliper orientation
The brakes will work, but you will probably see uneven pad wear and possibly decreased clamping power due to the drag on the pad not being ideal. I would run them and maybe keep an eye out for a second set or a replacement crossover tube.
Or you can bleed them off the car and then re-install them "upside down", but with the correct piston orientation. This is probably the safe thing to do.
Or you can bleed them off the car and then re-install them "upside down", but with the correct piston orientation. This is probably the safe thing to do.
- amd is the best
- Posts: 1431
- Joined: Wed Feb 27, 2013 12:25 am
- Location: Schenectady, NY
Re: 4 piston caliper orientation
GOOD CALL JIM!!! Thanks! I'll just bleed them before mounting. Can't believe I hadn't thought of that.
- audifreakjim
- Posts: 2142
- Joined: Sun Mar 03, 2013 3:00 pm
Re: 4 piston caliper orientation
Anytime, now just post more burnout vids!