Baer SS4 front and dual rear caliper help? - Ford Mustang Forum
 
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post #1 of 6 (permalink) Old 02-17-2016 Thread Starter
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Baer SS4 front and dual rear caliper help?

About a month ago I installed the ss4 front brakes from baer. Install went perfect and the rear stock brakes worked fine with the fronts.

This weekend I installed the rear SS4 dual caliper brakes. Again the install went perfect until it came time to bleed the brakes. I know I got all of the air out of the rears and there are no leaks anywere. My problem is the pedal is mushy and goes to the floor once at the floor the rear brakes do hold but just barely.

I think the problem might be the capacity of the stock master cylinder does have enough capacity do to the dual rear calipers. Or will a brake Proportioning Valve in the rear circuit fix it.

Thanks,
TC

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post #2 of 6 (permalink) Old 02-17-2016
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You still have an air bubble floating in the system


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post #3 of 6 (permalink) Old 02-17-2016 Thread Starter
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Thanks, I'll bleed everything again.
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post #4 of 6 (permalink) Old 02-17-2016
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Originally Posted by 201250 View Post
About a month ago I installed the ss4 front brakes from baer. Install went perfect and the rear stock brakes worked fine with the fronts.

This weekend I installed the rear SS4 dual caliper brakes. Again the install went perfect until it came time to bleed the brakes. I know I got all of the air out of the rears and there are no leaks anywere. My problem is the pedal is mushy and goes to the floor once at the floor the rear brakes do hold but just barely.

I think the problem might be the capacity of the stock master cylinder does have enough capacity do to the dual rear calipers. Or will a brake Proportioning Valve in the rear circuit fix it.

Thanks,
TC
Definitely air. For the most part it doesn't really doesn't matter how big the reservoir is as once the brakes are bled properly, the only amount of fluid needed is the amount to support the "stroke" of the pistons which is only going to be like 1/16" or so. The reservoir would have to be REALLY small to not be able to handle that amount of fluid. You need maybe 2 oz of fluid to compress all of the brakes.

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post #5 of 6 (permalink) Old 02-18-2016
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did you bleed both sides of each caliper?

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post #6 of 6 (permalink) Old 03-03-2016 Thread Starter
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Thanks for advice guys. I bled everything again including all 4 calipers on the rear and found a lot of air in the system. After that they work great with good pedal feel and travel. Stops on a dime and now will hold the car to 3300 rpm against the 2 step. Launches better than it ever has. Next up will be a 4C or 5C converter.

TC
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