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Nasty squeeling coming from rear wheels

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Old 01-15-2018, 12:29 PM
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M491Dave
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Default Nasty squeeling coming from rear wheels

Long story short, we bought a 1986 Porsche M491 from my wife's uncle recently. His health problems are preventing him from driving any of his 4 Porsches so we bought the 911 for a fraction (understatement) of its value. We needed to buy new tires since the track only slicks were 6+ years old. When I started putting the new tires on, I notices a horrifying sound coming from the break assembly. Any ides what the problem might be? I haven't had a chance to dive into it yet since it was pretty late when I swapped the tires but the a$$ of the car is still in the air and I'll be diving in sometime this afternoon.

Sounds to me like the backing plate might be rubbing on the rotor or something like that.
It might be helpful to know that the car sat in his garage for over 2 years under a car cover. He took the necessary long term storage precautions such as gas treatment, moth ***** (still getting that smell out) and so forth. We shipped the car from Northern Michigan to Arizona. The car was never driven in the snow either.
Here's what it sounds like...

Any suggests are greatly appreciated.
Old 01-15-2018, 01:05 PM
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theiceman
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Also check e- brake shoes.
Old 01-15-2018, 01:21 PM
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raspritz
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Your video is ‘unavailable’, but a stuck caliper piston is a not unlikely culprit.
Old 01-15-2018, 01:33 PM
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M491Dave
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Raspritz - Sorry about that. Try it now.

Theiceman - I didn't know there was a dedicated e-brake assembly. I'll have to check that out.
Old 01-15-2018, 03:40 PM
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theiceman
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if its anything like the sc its inside the "top hat"

I think a brake service is in order anyway so im sure you will find the culprit, just take out the calipers and clean and inspect e brake, calipers, sliders rotors and pads.
Old 01-16-2018, 06:44 AM
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floatss
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Dave,
With the car having stood for a while, a light rust would have formed on the rotors. Once you have driven it round the block a few times, it will be fine.
Don't worry it is quite normal, UNLESS it does not stop within a few miles. Enjoy, and let us know if a few miles cleared up the noise.
Regards
Chris
Cape Town
Old 01-16-2018, 08:59 AM
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Uwon
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Happens to all stored cars. Drive, drive,drive. Also, pull the e-Brake on/off several times while driving at low speed -clears the cobwebs, so to speak.
Johan



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