What Else Do I Try To Rid Brake Squeeling?

[SargeRX8]

As some of you may be aware, my cars rear brakes have been squealing like crazy. It had the standard rotors running standard pads. So I removed the pads and got the rotors machined and fitted the QFM HPX pads. Problem still there after bedding in. I put some of that brake noise shit on the shims, the noise is still there. I removed those brake pads and put some other bendix pads on. The noise is still there but much quieter, but still there. I bought new rotors with new pads and put that noise reduction shit on it, ITS STILL f**kING THERE and YES it is the rear pads and mainly the rear passenger side. The new rotors are the DBA 4000 slotted rotors. What the f**k else could it be? The noise mostly occurs when at slower speeds but when I heat them up it can occur at any lower end speed with firm braking.

Everything has been changed using new parts, fresh parts, trying different combos. Could the hub not be spinning perfectly flat? Could the caliper be failing? I don't have to use any excess pressure to brake, as soon as I find that point it makes noise, I can hold that noise until the car completely stops. Its embarrassing.

The front seems to have shutted up. I had slotted rotors which are no longer slotted thanks to machining. 3 different brake pads, 2 different rotors and the noise is still here. I'm considering either buying a full set of Ksport or D2 or some other generic brand and fitting those all round, or setting the car on fire. Seriously this noise is killing my ears.

[Global_Warmer]

setting the car on fire.

This will fix it.

[Moodles2]

What exactly was put between the shims and pads (brand, product name)?

[SargeRX8]

nfi some red silicone looking shit. Also on one set of the pads there is a soft dampening pad between the metal shims which also has this red stuff on it. Note the car makes the same noise with or without this stuff. Also when turning the rear wheel when it is off the ground, I can hear no noise at one point then at one point there is the sound of friction. This tells me that something is not sitting straight. If it was the pads, it would be noise all the way around....

[75coupe]

Ive had similar brakes squeal issues, I got this response from gslrally whi sell QFM, DBA and RDA products

What I'd recommend would be a stick on shim kit, the abobroad minded persone best being the Project Mu one:

http://project-mu.co...other_shim.html

We sell a stack of these to suit the 4/2 pot Nissan calipers, and are the only thing that seems to fix the noise. They're $65 for the front set, and $55 for the rear set. If you were to get these, probably best to get a new set of pads so you get maximum use out of the shim.

[SargeRX8]

Did you try the shims? I got a set on my front but the noise is now from the back(it was from all 4 before...). This is f**ked. My old car had the same setup of rotors, slotted front standard rear, with endless pads and it NEVER EVER SQUEALED!

[75coupe]

nope I havnt had a chance to try the shims yet....

brake squeal sucks...

[blk94r33]

Were the/have you chamfered the edges of the pads? 9/10 times on customers cars I find this fixes the problem.....

You have to realize your using high-performance gear, designed to disperse heat easily, take long hard braking repeatedly and do it time after time. Slowing down from 50 on the street for an intersection doesn't get the heat the brakes need to operate well, and quietly.

Does the noise go away if you hold the pedal at say 100km/h until the brakes are hot?

If you don't believe this is your problem, or have already tried it, have you checked that when you re-fit the pads, the factory shims/pins/anti-rattle gear isn't coming close to the rotor, then interfering under braking?

[Ty1]

the brake shims solved my problem! I had sqeeling rear brakes as I changed to rda slotted rotors and qfm hpx pads. They would only squeel when I got a fair bit of heat into them. I also chamfered the edges so that probably helped a bit too. but definitly go the project mu shims. not too pricey either.

[BstewyR33]

if you havent tried - maybe an "on car" brake machine might help take some of the squeal out, I had that done after an off car machining of the rotors didnt do shite, every bit of braking squealed, bad brake shudder too. now, only the slightest squeal after a rainy day

plus i put a shitload of brake pad grease on the back of the pad, and inbetween each of the metal plates behind.

[SargeRX8]

I'm going to give them a good bedding in. I really don't know why they are this loud but some people are saying I'm not getting enough heat into them and they maybe right. Its pretty embarrassing trying to bed squealing brakes on suburban roads...

I'm going to do 6 100km/h to 10km/h medium to hard then 3 hard to 5km from 100km. If no luck, ill get some shims or set the thing on fire.

[BMYHOE]

any luck

[simpletool]

I used to have awful squeel with RB74 pads. Tried the pink gluey stuff - didn't work. Then tried the copper brake grease on the stock shims and it worked fine. However I did need to reapply around 20,000km. Now I just use Bendix Ultimates and no problem but still using some copper grease. Love that stuff.

Symptoms exactly as described. The squeel used to go away when they got hot enough but that was pretty rare off track.

[BLITZ-26]

i have ultimates and they sqeeal at low speed pretty annoying but i just put up with it car still stops fine?

[luke gtr]

im running the bendix srt pads, and the front wont stop squealing at low speeds, light braking.

chamferred the fk out of them, no difference

used some de-squeak, and went away for a while.

going to have to give the copper grease a go i suspect

[Shane33]

ive been having the same squealing shit since i bought the 33. so fking annoying n embracing n neighbours went complaining like crazy. changed rotors pads put on goo grease but the fking noise still there. now im just giving up.

[luke gtr]

im running the bendix srt pads, and the front wont stop squealing at low speeds, light braking.

chamferred the fk out of them, no difference

used some de-squeak, and went away for a while.

going to have to give the copper grease a go i suspect

Update:

Rechamferred the pads, installed landcruiser anti rattle shims, used a thin but dispersed layer of wheel bearing grease between all shims and pad.

No more noise.

Sometimes you dont have to buy 55dollar shims

Good luck to op, hope you fix it soon.

[SargeRX8]

Well heres my input. I got another set of brake pads. Remsa brake pads with the soft backing. Fitted then on and went out to bed them. What do you know, no noise! I was CHEERING. Two days after heard a very faint squeal when coming to a stop.... My stomach dropped. The noise came back. It f**king came back. Brand new pads, brand new rotors. I got f**king pissed off, like f**kING PISSED OFF. The money ive spent on new brake parts trying to get rid of this shit. I went and bought that red paste shit and some brake grease(next I will get copper grease if this doesn't work). I went home and pulled apart the caliper which makes noise, note guys the noise is ONLY from my left rear wheel. None of the others make noise!

I put some red stuff on the back of the pad. I put some red stuff between the shims. I put some red stuff on the back of the shim which contacts the caliper piston. I wire brushed all the shims prior to this. I wire brushed inside the caliper. I wire brushed the pin. I put brake grease on the two anti rattle shim things and grease on the pins. So far 3 days, no noise. Touch wood the problem is gone. I have NO idea why it is only ONE SIDE causing this issue. I don't know if the caliper is seizing, if the hub is damaged(unlikely, it spins in a perfect circle, it is aligned properly etc) or if its some other BS. Its obviously the braking system. I ensured that the caliper was tight onto the mounts. Honestly if this does not go away I will probably take my whole f**king subframe off, new mounts everywhere, rebuild the CV shafts, change any bearings, set shit on fire.

I used this to grease up metal on metal parts

http://www.supercheapauto.com.au/online-store/products/Permatex-Ultra-Disc-Brake-Caliper-Lube-14G.aspx?pid=113948#Description

And this to use between the high potential noise points

http://www.supercheapauto.com.au/online-store/products/CRC-Disc-Brake-Quiet-118mL.aspx?pid=1061#Description

Not the CRC brand, I used the Dynagrip(exactly the same shit).

Edited March 3, 2012 by SargeRX8

[dori34]

I feel your pain bro.

Same issue with my front brakes running standard rotors, stop squeel sealant, qfm A1RM pads, it is deafingly loud, just ask BSA.

After applying the sealant and remachining rotors, it went away for 5-10k kn and came back louder then ever.

Thinking of changin to remsa pads as well but it might just come back like in your situation. I am at a total loss with this so I just put up with it.... For now.

My old ebc green pads NEVER squeeled at all!!

Can we set fire to our cars together???

[simpletool]

Copper grease is what you want. That red goo just makes shit worse after a few weeks, I've tried it all a few times over.