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Author Subject: 406 brembos
craigyboy. Banned!

Location: devon

Registered: 16 Nov 2009

Posts: 26

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Post #1
hi fellow members,i recently bought a phase 2 bianca white gti6 and the firstmod i put on was the 406 brembos which i had off a friend as he said they would fit.i bought some ferodo pads and grooved xantia v6 discs and the noise is ffffin unbearable.They squeal that much that i drive through town and EVERYBODY looks at me, it even hurts my ears with some music on.Could it be that i have the discs the wrong way round?? i.e grooves facing wrong way round. they are fitted with the top of the groove closer to the rear. Any advice would be much appreciated.

Thanks alot, Craig
Posted 17th Nov 2009 at 04:24
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bongo dts

Senior User

Location: Leicester

Registered: 03 Jun 2008

Posts: 633

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Post #2
damn, not what i wanted to read. was thinking of going for this upgrade myself!!

From reading about it they do squeel unless you go for bells & rotors though I've never heard it personally so couldn't tell you if it's any worse than normal. Hope it is as I couldn't live with that either and too tight to go the whole hog with bells & rotors at the min!
Posted 17th Nov 2009 at 04:30
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craigyboy. Banned!

Location: devon

Registered: 16 Nov 2009

Posts: 26

Status: Offline
Post #3
oh mate they are really really bad.dont get me wrong at high speed they are awesome and you dont get any brake fade.its just at light braking around town and stuff.its worse that finger nails on a chalk board.eEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE!!!!!!!!!! (SHUT THE FU*K UP)
Posted 17th Nov 2009 at 04:35
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bongo dts

Senior User

Location: Leicester

Registered: 03 Jun 2008

Posts: 633

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Post #4
Shit, that's bad, no way could I handle that! Think I'll be saving my money for something else.

Just be doing a bit more reading and come across this thread and it doesn't look promising for a squeel free brembo set-up on standard disks of any sort. Sad
Posted 17th Nov 2009 at 05:23
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craigyboy. Banned!

Location: devon

Registered: 16 Nov 2009

Posts: 26

Status: Offline
Post #5
clicky not work
Posted 17th Nov 2009 at 05:03
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bongo dts

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Location: Leicester

Registered: 03 Jun 2008

Posts: 633

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Post #6
try it now bud.
Posted 17th Nov 2009 at 05:23
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craigyboy. Banned!

Location: devon

Registered: 16 Nov 2009

Posts: 26

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Post #7
yeah that works now thanks. Thumbs up. I think i might sell them if i cant get rid of the noise.
Posted 17th Nov 2009 at 05:46
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chrisd306

Seasoned Pro

Location: Perth Scotland

Registered: 26 Nov 2005

Posts: 10,061

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Post #8
That is normal for brembos, should of went for the wilwoods mate, a few of my mates have brembos an are really bad, but you just have to get used to it, think there is some combinations that arent as bad as others but on general when there dirty the squeal like f*ck, get ear plugs ha

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Posted 17th Nov 2009 at 07:44
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lotek

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Location: Berkshire

Registered: 04 Dec 2007

Posts: 6,107

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Post #9
only one of mine squeeled.

i had pads with rubber backing on , i put copper grease only on one of them, i forgot to grease the other. and it squeels.

you can stop the squeel 2 ways.

1. bells and rotas,
2. peugeot have anti squeel stuff that solves it i beleive carl has some.
they used it for warranty claims for squeeling. carl will know what it is called.



Posted 17th Nov 2009 at 15:41
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SteviePut

Seasoned Pro

Location: Down south

Registered: 20 Oct 2005

Posts: 13,637

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Post #10
Rallydesign sell something called blugoo (or something like that) which is supposed to stop brake squealSmile

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Posted 17th Nov 2009 at 15:46
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craigyboy. Banned!

Location: devon

Registered: 16 Nov 2009

Posts: 26

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Post #11
thanks guys.will try and find some. if that fails then my brembos will be up for sale.
Posted 17th Nov 2009 at 16:34
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rallyestyle

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Location: London

Registered: 23 Jul 2003

Posts: 14,990

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Post #12
I have never understood how bells and rotors actually cures this? Surely its the larger/different discs used that help cure the sound Unsure

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Posted 17th Nov 2009 at 19:08
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tom tom go

Tom Tom GONE!!

Location: Doncaster

Registered: 29 May 2008

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Post #13
I thought the squeal was from the pads moving on the caliper surface when braking ? Or am I being a complete 'tard in saying that . . .

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Posted 17th Nov 2009 at 21:33
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phillipm

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Location: Rotherham

Registered: 15 Oct 2006

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Post #14
rallyestyle wrote:
I have never understood how bells and rotors actually cures this? Surely its the larger/different discs used that help cure the sound Unsure


Its caused by harmonic waves setting up around the disc caused by the pads, changing to bells and rotors shifts the dynamic range and adds some damping across the disc due to the different wave speeds.
You can also get a smaller resonance setting up in the pads themselves, which is where backing pads, etc, help.

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Posted 17th Nov 2009 at 21:41
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blaze wip

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Location: Hexham

Registered: 07 Sep 2009

Posts: 926

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Post #15
lotek wrote:
only one of mine squeeled.

i had pads with rubber backing on , i put copper grease only on one of them, i forgot to grease the other. and it squeels.

you can stop the squeel 2 ways.

1. bells and rotas,
2. peugeot have anti squeel stuff that solves it i beleive carl has some.
they used it for warranty claims for squeeling. carl will know what it is called.






Surely then your list should have been...

3. Grease both sides.

LOL

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i feel like giving her a good dry bumming session.
Posted 17th Nov 2009 at 21:52
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rallyestyle

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Location: London

Registered: 23 Jul 2003

Posts: 14,990

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Post #16
phillipm wrote:
rallyestyle wrote:
I have never understood how bells and rotors actually cures this? Surely its the larger/different discs used that help cure the sound Unsure


Its caused by harmonic waves setting up around the disc caused by the pads, changing to bells and rotors shifts the dynamic range and adds some damping across the disc due to the different wave speeds.
You can also get a smaller resonance setting up in the pads themselves, which is where backing pads, etc, help.


I see, very technical Thumbs up

So if there was another way to shift the dynamic range then sqealing could be stopped?

Also some high peformance cars have 4 pots with big discs that dont squeal, have they somehow designed the issue out?

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Posted 18th Nov 2009 at 14:20
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russbez

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Location: Inverness-Shire

Registered: 19 Dec 2005

Posts: 7,459

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Post #17
what noise? Whistle

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Posted 18th Nov 2009 at 15:25
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phillipm

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Location: Rotherham

Registered: 15 Oct 2006

Posts: 20,607

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Post #18
rallyestyle wrote:


I see, very technical Thumbs up

So if there was another way to shift the dynamic range then sqealing could be stopped?

Also some high peformance cars have 4 pots with big discs that dont squeal, have they somehow designed the issue out?


If you look at they're discs, they have a half-coin shaped slot machined into the inner surface where the vents are - that shifts the harmonic resonance frequency out of that caused by low-pressure braking - higher pressure exerts some damping so it's not so bad there - obviously it takes a lot of to work out where it needs to be/size/etc, for a particular car though, then make sure it breaks the wave at the right frequency.

________________________________________

- Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM me
Email me!
Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces.
Posted 18th Nov 2009 at 19:16
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rallyestyle

Seasoned Pro

Location: London

Registered: 23 Jul 2003

Posts: 14,990

Status: Offline
Post #19
phillipm wrote:
rallyestyle wrote:


I see, very technical Thumbs up

So if there was another way to shift the dynamic range then sqealing could be stopped?

Also some high peformance cars have 4 pots with big discs that dont squeal, have they somehow designed the issue out?


If you look at they're discs, they have a half-coin shaped slot machined into the inner surface where the vents are - that shifts the harmonic resonance frequency out of that caused by low-pressure braking - higher pressure exerts some damping so it's not so bad there - obviously it takes a lot of to work out where it needs to be/size/etc, for a particular car though, then make sure it breaks the wave at the right frequency.


You my friend know way to much! That gets my award of answer of the year Clapping

Gonna go find me a supercar now so i can have a gander first hand Ninja How am i gonna get the wheel off Whistle

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Posted 18th Nov 2009 at 19:43
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