Creaky Brembos - Brakes Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: Creaky Brembos

jammapic

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Location: Manchester

Registered: 11 Jun 2010

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Post #1

Hi,

Has anyone ever had a set of Brembos "creak". I.e. like a creaky floorboard, or old Pirate's Ship creaking.

I can get it to do it, stationary, engine off and just push the brake pedal REALLY hard.

Very odd.

Pads and discs are good, pistons seals all good, and just re-greased and rebuilt everything, problem persists.

Any ideas?

JP

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Posted 19th May 2014 at 18:46

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bigbadbowen

Seasoned Pro

Location: Winchester

Registered: 21 Nov 2003

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Post #2

Flexi hoses all good ? Master cylinder all good ? Brake servo ?

Take your pick

Posted 19th May 2014 at 18:51

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jammapic

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Location: Manchester

Registered: 11 Jun 2010

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Post #3

Flexi's seem fine, no leaks. It's not the master cyl or the servo as the noise comes from the front calipers.

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Posted 19th May 2014 at 20:35

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6waysforward

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Location: Benfleet essex

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Post #4

Corrosion on the pistons in the calipers or dry piston seals.
My rear calipers used to do it until i cleaned them all up.
Take out the pistons, clean up with emery cloth, lubricate and re fit.

If its not that then somethings loose or you have cracked disc's that are creaking under pressure.

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Posted 19th May 2014 at 20:40

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jammapic

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Location: Manchester

Registered: 11 Jun 2010

Posts: 778

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Post #5

So pull the pistons right out - clean them with emery and then push them back into the seals? Have to say I've never taken brakes completely apart before.

What do I lube them up with?

Cracked discs... could be onto something - I have a brake judder which I cannot fix. I've had the discs skimmed and still the judder persists.

Even when going REALLY slow, you can feel the car slow at an uneven rate (if you follow?) like, I'm pulsing the brakes, when I'm not.

JP

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Posted 19th May 2014 at 21:11

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Niall

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Location: Epsom

Registered: 06 Jun 2012

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Post #6

If i was you, buy a piston seal set as well.
Calipers off, pistons out, clean them up with some brilo pad using brake fluid as lube, clean the seals (or replace ideally), wet it all with brake fluid and reassemble.

Posted 19th May 2014 at 21:42

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aaron6

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Location: On the sofa in maidstone

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Post #7

Sounds like warped discs. As for the creaking we had a zx that creaked and it was excessive play in the slider pins. I know they are a completely different layout but I suspect that the creak is down wear.

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Posted 19th May 2014 at 21:42

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jammapic

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Location: Manchester

Registered: 11 Jun 2010

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Post #8

Ah, so you don't use anything specific as lube - just brake fluid?

I actually have a full rebuild kit here, new pins, new bolts, pipes, everything....

I wonder why, even after a full disc skim, I still have a judder / vibration when braking?

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Posted 19th May 2014 at 22:25

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Niall

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Post #9

jammapic wrote:

Ah, so you don't use anything specific as lube - just brake fluid?

Yep

Its quite sloppy as it is and is obviously not going to react so its ideal really.

Posted 19th May 2014 at 22:30

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buzzbrightyear

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Registered: 09 Jul 2008

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Post #10

U sure it's not the master cylinder making that noise?

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Posted 20th May 2014 at 00:08

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jammapic

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Location: Manchester

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Post #11

100%. You can hear it coming from both Calipers.

If you put your hand on them, you can feel them "clicking".

JP

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Posted 20th May 2014 at 09:10

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aaron6

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Post #12

Are the pads too lose in the caliper?

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Posted 20th May 2014 at 10:14

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jammapic

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Location: Manchester

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Post #13

Don't think so. They feel snug.

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Posted 20th May 2014 at 10:16

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6waysforward

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Post #14

aaron6 wrote:

Are the pads too lose in the caliper?

Also check and make sure pads are moving freely in the caliper.
The only moving things in a caliper is the pistons and pads so either they are struggling or you have something loose or cracked.
Standard calipers have sliders but as you have brembos, this is ruled out.

Or its highly unlikely but you might have a bad flow of brake fluid and it could be this that you can hear as the fluid is being forced through any obstructions.

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Posted 20th May 2014 at 12:21

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jammapic

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Location: Manchester

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Post #15

Yeah, I get that bit. But the "uneven" slowing down, like a pulsing.... Confuses me.

Guess they could be unrelated.

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Posted 20th May 2014 at 13:11

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aaron6

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Post #16

The uneven brake force in a rotational manner can surely only be either warped discs or runout of the disc to hub.

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Posted 20th May 2014 at 17:13

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Lecktorious

aka G.

Location: Edinburgh

Registered: 08 Jan 2009

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Post #17

I had a 'pulsing' through my brake pedal on my old '6. Turned out to be a sticky rear caliper, probably caused with the car being parked up for weeks at a time. Not related to your creaking brake problem but thought I'd add the above in if that helps in any way.

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Posted 20th May 2014 at 17:32

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jammapic

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Location: Manchester

Registered: 11 Jun 2010

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Post #18

I did wonder that, so I tested slowing down with the handbrake. No pulsing...

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Posted 20th May 2014 at 17:42

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prism7guy

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Post #19

I've had pulsing brakes in the past, felt like a warped disc but it turned out to be ds2500 pad material which had stuck to the discs and refused to wear off.

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Posted 20th May 2014 at 17:43

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jammapic

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Location: Manchester

Registered: 11 Jun 2010

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Post #20

Seem to have sorted it.

New discs, noise still there.

Slacken caliper bracket, noise still there.

Ditch the OEM pads and fit DS2500's, noise gone.

Very odd.

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306 DTurbo Track beasty - 209.9hp - RIP

Posted 20th May 2014 at 20:49

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jeffers Forum Admin

Location: Leeds

Registered: 14 Dec 2003

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Post #21

jammapic wrote:

Seem to have sorted it.

New discs, noise still there.

Slacken caliper bracket, noise still there.

Ditch the OEM pads and fit DS2500's, noise gone.

Very odd.

Cracked backing plate on one of the pads?? Or something along them lines?

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Posted 21st May 2014 at 08:12

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rallyestyle

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Post #22

jeffers wrote:

jammapic wrote:

Seem to have sorted it.

New discs, noise still there.

Slacken caliper bracket, noise still there.

Ditch the OEM pads and fit DS2500's, noise gone.

Very odd.

Cracked backing plate on one of the pads?? Or something along them lines?

Uneven pads would also cause this problem i would say Yes

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Posted 21st May 2014 at 13:38

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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #23

As Tom says, if the pads were worn unevenly then when you press the pedal really hard, some of the pistons would be locked solid against pads mating nicely into the discs but some of the pistons would be still trying to move outwards to take up the gap between part of the pad and disc.

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Posted 22nd May 2014 at 23:14

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