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Old 08-07-2003, 12:58 PM   #1
bcristea
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Default STi brake pad clunking noise?

Does anyone get a clunking noise from their brake pads when slowly moving forward/backwards from park?

It almost sounds like the pads are shifting forward or backwads a few millimeters? Maybe the tolerances are off?

Any ideas or comments?

Brian
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Old 08-07-2003, 01:11 PM   #2
RichQY
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i get screeching noise when approaching 5-15 mph ish
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Old 08-07-2003, 01:26 PM   #3
ANZAC_1915
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The clunk is normal.
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Old 08-07-2003, 02:38 PM   #4
bcristea
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Quote:
Originally posted by Glenn Wallace
The clunk is normal.
RichQY,

Its not a screech its a clunk.

Glenn, what do you mean by normal and what is the cause?

Thanks,

Brian
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Old 08-07-2003, 02:52 PM   #5
JDMTEG98
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Mine Screech Occasionally in Reverse ONLY
Sounds like a little girl screaming " eeehhhhhhhhhhhhhhhhhh"
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Old 08-07-2003, 03:00 PM   #6
ANZAC_1915
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Quote:
Originally posted by bcristea


RichQY,

Its not a screech its a clunk.

Glenn, what do you mean by normal and what is the cause?

Thanks,

Brian
By normal I mean all the cars do it, it doesn't cause any problems and is nothing to worry about. There has to be a little slop for the pads fitting the calipers so they can actually slide. On some cars it is louder than others.

Glenn
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Old 08-07-2003, 03:18 PM   #7
Silver-Bolt
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Normal sound with floating rotors.
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Old 08-07-2003, 03:22 PM   #8
bcristea
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Glenn,

So it is the brake pads and calipers initally contacting upon movement of the rotor?

I didn't know this was normal?

Does your STi do it?
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Old 08-07-2003, 03:24 PM   #9
CreoWRX
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I usually get a pronounced clunk after I wash the car, and drive it for the first time and quickly let off the brakes/get on the gas... But I'm sure it's normal with these brakes.

-Mike-
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Old 08-07-2003, 03:58 PM   #10
STI_FFY
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Quote:
Originally posted by bcristea
Glenn,

So it is the brake pads and calipers initally contacting upon movement of the rotor?
I noticed it when driving in stop/go traffic in a hilly stretch on route 355 yesterday. I think this helped me to define how/when it will be noticed. Try this -

Go to a hill that has littl/no traffic on it. While driving slowly uphill, apply the brakes and allow the car to come to a full stop and "relax". Now release the brakes and travel over the crest of the hill at low speed. When you get over the top, apply the brakes and you will hear it - "clunk". Repeated applications of brake on the downhill will *not* reproduce the clunk.

I think what's happening is that the pads settle to the rear limit of clearance when clamped to the rotor and the car "relaxes" at full stop on the uphill. When released they stay pretty much at this full rearward clearance position. The next application of the brakes will cause the pads to grip the spinning rotor and travel quickly to the forward limit of clearance.

You are just hearing the impact of the sudden stop of thjs few millimeters of travel.

it might also do the "clink" if you simply back up and apply the brakes, but I did not try this.
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Old 08-07-2003, 04:03 PM   #11
Silver-Bolt
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Quote:
Does your STi do it?
No STi yet, should be here in the next 1-2 weeks. However the Brembo F50's on my Ford Lightning and on my BMW 330i do the same thing.
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