 Porterfield R4S Brake Squeal |
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| bluhun |
  Dec 23 2009, 08:11 PM
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#1
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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  |
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I'm running the Porterfield R4S street pads front and rear (Boxster calipers and rotors up front, with widened 914 rear calipers and 20 mm vented and cross-drilled rotors), and they squeal like a Banshee! I'm running the anti-squeal shims and we've tried the Wurth anti-squeal treatment, but to no avail. Is there any tried and true cure for this malady or is this just par for the course with carbon-kevlar pads? |
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| r_towle |
Dec 24 2009, 12:43 PM
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#2
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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From my understanding, brake squeal is not from the pads but from the vibration that occurs when the pads are applied...the squeak is actually from the metal on metal contact of the backer plate of the pads to the caliper.
I have had luck getting rid of the squeak on fresh pads by sand blasting the areas that the pad touches the caliper so its really clean. Ashamed to admit by I also apply grease to the area that the metal on metal contact happens to attempt to keep if from rusting right up again... Rich |
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Posts in this topic
bluhun Porterfield R4S Brake Squeal Dec 23 2009, 08:11 PM
Racer Chris I think its common with carbon/kevlar pads. Its ha... Dec 23 2009, 08:21 PM detoxcowboy
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I'm running the Porterf... Dec 23 2009, 11:13 PM ArtechnikA
...squeal like a Banshee! I'm running th... Dec 24 2009, 08:16 AM ConeDodger I have the R4S pads at all four corners of both th... Dec 24 2009, 09:00 AM tat2dphreak
:agree:
my R4S pads never squeaked, when they we... Dec 24 2009, 09:27 AM
iamchappy I had some squeal on mine when using solid rotors ... Dec 24 2009, 01:22 PM |
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