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bluhun |
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Member ![]() ![]() Group: Members Posts: 91 Joined: 23-January 06 From: San Rafael, CA Member No.: 5,464 Region Association: Northern California ![]() |
Sometime ago I posted a problem with severe brake squeal following installation of Porterfield R4S pads on my 914-6 conversion car. I'm running Boxster calipers up front and the PMB widened calipers in the rear.
I've been able to trace the problem to the right front caliper. Since the other three calipers don't squeal, I assume that there's some sort of alignment issue between the caliper/pad combo and rotor. However, the caliper didn't squeal before with the Textar pads. The right side also locks up before the left, with lots of tire skreech and smoke, but nothing from the driver's side. Are these two observations related? Any suggestions would be greatly appreciated! |
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ericread |
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The Viper Blue 914 ![]() ![]() ![]() ![]() Group: Members Posts: 2,177 Joined: 7-December 07 From: Irvine, CA (The OC) Member No.: 8,432 Region Association: Southern California ![]() |
From what I understand, much of brake squeal may be traced back to a brake piston that may contain some irregularities. This allows the pad to supersonically vibrate against parts of the piston, causing a squeal.
There is a tube of stuff you can use to coat between the brake piston and the pad, which is reported to work. I purchased from Perfromance Parts a "Brake Squeal Pad". It's a paper thin piece of rubber that sits between the caliper piston and the pad. Since I began using these, my brake squeal has gone away. Another cause is based upon how you seated your brake pads when you installed them. Take a look at Eric Shea's PMB website and he has a step-by-step prcess for properly seating Porterfield pads. Good luck! Eric Read |
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