Brake Sqeak

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Sep 25, 2013 | 03:38 PM

1978vett

Thread Starter

Racer

Joined: Jul 2013

Posts: 423

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Brake Sqeak

My 78 has got a squeak from the right rear wheel area.. Its sounds like sqeak sqeak sqeak etc. until I push on the pedal then it changes to a higher pitched sqeak sqeak ... It doesn't do it until I have driven for a few miles then it doesn't go away until the car has set for a while.. Any info would be great ,,thanks

Sep 25, 2013 | 03:49 PM

MelWff

Race Director

Joined: May 2006

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check the u-joints, the wheel bearings, and the brake pads.

Sep 25, 2013 | 04:44 PM

1978vett

Thread Starter

Racer

Joined: Jul 2013

Posts: 423

Likes: 6

Quote:

Originally Posted by MelWff

check the u-joints, the wheel bearings, and the brake pads.

If it were u-joints would the sqeak sound change when I put the brakes on ?

Sep 25, 2013 | 05:15 PM

Brcmpbl

Drifting

Joined: May 2012

Posts: 1,353

Likes: 44

From: Calgary Alberta

Quote:

Originally Posted by 1978vett

If it were u-joints would the sqeak sound change when I put the brakes on ?

In theory yes, if there is play when you apply force to the area by pressing on the brake pedal it could change the position of various parts just very slightly, thus changing the sound. Ditto the bearings and play.

I'd guess that what you have is uneven brake pad wear. The pads are constantly in contact with the rotor as you drive, so a high spot can cause this kind of squeak, etc.

What's causing the uneven wear, that's the question likely. Could be rotor run out, which is common, and / or could be play somewhere further. Need to look around.

Sep 25, 2013 | 06:59 PM

havesometo

Drifting

Joined: Dec 2012

Posts: 1,360

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From: Meldrim Georgia

Mine made the exact same sound. It was a bent spindle.

Sep 25, 2013 | 08:17 PM

mds3013

Melting Slicks

Joined: Mar 2009

Posts: 3,126

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Rotor run out seems to be the main reason. As the rotor moves in and out it contacts and retracts from the brake pads causing the squeak. When the brakes are applied the squeak stops as the pads are tight against the rotor. How I stopped mine, replaced rear rotors due to damage on the inner parking brake hub, spindles checked for run out and none found, had front rotors turned by a very experienced Tech. that removed less than .020 per side, new organic pads. Noise is gone now for three years. Good luck with it, mike...