Evo Brakes Squeal

[Dyesuperman]

Ok so I have looked on evolutionm.net and all and searched on here but it seems everyone has a squealing problem when they are braking and not when driving. My problem is a constant squeal, doesn't matter if I am turning, stopping, driving in a straight line, they squeal. Well, they don't all squeal, just the driver front I believe. I have noticed that they tend to be quiet until I press the brakes for the first time that day (comes back every day). They do quiet down some after a lot of driving but it has gotten to the point where it doesn't fully go away. It seems like what you would hear when there is grime or something caught in between the pad and rotor but I have taken them off twice now and cleaned them with no effect. Btw, these are evo brakes with Hawk PC pads and DBA 4000 rotors. I used the OEM shims that came with the calipers when I bought them and coated the back of the pads with anti-seize to help prevent squeal. Also put some on the top of the pad where the clips touch.

Now here are the things I have done:
Cleaned pad and rotor with brake cleaner (twice)
Scuffed up pad and rotor a little bit (maybe not enough)
Made sure caliper wasn't touching rotor
Re-coated back of pad with anti-seize
Re-coated edge of pad where the clips touch

With all of the above done the only options I think I have left are:
Re-bed in the pads (Would them not being bed-in enough cause a constant noise?)
Buy new pads
Rebuild caliper


Anyone have any suggestions? This is driving me absolutely crazy and I want to destroy my car every time I drive it now

Thanks,

Caleb

 

[okm12346]

Im in the same boat, but its the passenger side for me. It starts after the first two times pressing on the pedal. Id also like to hear some suggestions

 

[BoredDSM]

Those hawk hps pads are known to be a noisy pad on the Evo brake system. Only suggestion I can make is to try and chamfer the pad edges. Another thing is what kind of anti-seize are you using. Personally I do not like anti-seize but it is the preferred method people use. Try finding some high temp caliper lubricant.

Sent from my MB860 using Tapatalk

 

[dsmspick]

I have had no squealing at all with mine what so ever. Are you sure there is nothing touching the rotor? With these Evo calipers you have to make sure it is absolutely straight. Like top bolt in, then bottom, then top, etc. etc. till it is tight. My friend had the same issue on his 3g and it turned out to be rubbing ever so slightly on the inside of the rotor. Just enough to create noise when in motion. Also when the wheel is tightened down or rotor tighten down without the wheel it changes a lot and may cause it to rub on the inside of the caliper, which sounds like the issue. I'll try to chime in more when i'm not as tired. Hope this helped.

 

[ACM]

Different pads play a huge part in Evo brake squeal. My first exposure was swapping from stock to Porterfield R4S - squealed like crazy. We tried everything - shims, anti-squeal gunk, nothing fixed it. Different pads - Carbotech Panther Plus at the time - fixed the problem. Never tried any other pads after that. One colleague used Ferodo DS2500 pads to good effect - he had tried several different pad brands, all of which squealed.

There used to be plenty of threads on this problem at Evolutionm.net, unless they've archived them. I know because we posted to at least one of them. There was one thread which listed different pads and their squeal propensity.

PS - I presume you meant anti-squeal, not anti-seize on the back of your pads ?

 

[ViciousLord]

It's true different pads are made up of different materials and operate at different temps but the Hawk HPS pads are not loud at all... I had them on my Evo with DBA 4000 wiper slot rotors. After my first of pads I tried all kinds. By far my favorite pad is the Ferodo 2500. Great initial bite, they were noisy as hell until they warmed up. But I'm the kind of person that care about noise I'm all about function.

 

[Dyesuperman]

Different pads play a huge part in Evo brake squeal. My first exposure was swapping from stock to Porterfield R4S - squealed like crazy. We tried everything - shims, anti-squeal gunk, nothing fixed it. Different pads - Carbotech Panther Plus at the time - fixed the problem. Never tried any other pads after that. One colleague used Ferodo DS2500 pads to good effect - he had tried several different pad brands, all of which squealed.

There used to be plenty of threads on this problem at Evolutionm.net, unless they've archived them. I know because we posted to at least one of them. There was one thread which listed different pads and their squeal propensity.

PS - I presume you meant anti-squeal, not anti-seize on the back of your pads ?

Yeah I searched through evom but it seemed everyone on there had the problem when they were actually applying the brakes and not when just driving around. I may have misunderstood what problem they were actually having though. Either way, I tried nearly everything that was posted in those threads to fix my problem and nothing worked. Oh, and I did mean high temp anti-seize...I used this thread as a guide when I put my pads in
How to change your Brake Pads - evolutionm.net

I have had no squealing at all with mine what so ever. Are you sure there is nothing touching the rotor? With these Evo calipers you have to make sure it is absolutely straight. Like top bolt in, then bottom, then top, etc. etc. till it is tight. My friend had the same issue on his 3g and it turned out to be rubbing ever so slightly on the inside of the rotor. Just enough to create noise when in motion. Also when the wheel is tightened down or rotor tighten down without the wheel it changes a lot and may cause it to rub on the inside of the caliper, which sounds like the issue. I'll try to chime in more when i'm not as tired. Hope this helped.

I have checked the clearance a couple times now but I guess it won't hurt to check again after Christmas. Only problem I see with that is why it would only start making noise after I press the brakes a couple times and not when I first pull out of the driveway.

Those hawk hps pads are known to be a noisy pad on the Evo brake system. Only suggestion I can make is to try and chamfer the pad edges. Another thing is what kind of anti-seize are you using. Personally I do not like anti-seize but it is the preferred method people use. Try finding some high temp caliper lubricant.

Sent from my MB860 using Tapatalk

Yeah I may go ahead and get some high temp caliper lubricant just to see if it changes anything. I don't think it will but it never hurts to try. My pads are the performance ceramic, not the hps, but chamfering the edges may help as well...I will give that a try. I am using copper anti-seize btw, good for up to 2000 degrees

It's true different pads are made up of different materials and operate at different temps but the Hawk HPS pads are not loud at all... I had them on my Evo with DBA 4000 wiper slot rotors. After my first of pads I tried all kinds. By far my favorite pad is the Ferodo 2500. Great initial bite, they were noisy as hell until they warmed up. But I'm the kind of person that care about noise I'm all about function.

I wouldn't mind it as much if it wasn't constant and the car was my daily driver. I despise hearing it every time I drive the car

 

[ACM]

I would try some anti-squeal between the pad and shim - Permatex, CEC etc. It's like gasket goop, but engineered for this particular application.

From what you say, it sounds like the pads are pulled back from the rotor until your initial application, and then they're in constant contact, causing the squeal. Make sure the pads are free to slide on their pins - heavily corroded pins will cause the pads to stick and pivot instead of slide on the pins.

Once the pins are confirmed new and shiny, if the squeal persists remove the pad springs for a quick drive and see what effect that has. Pad springs that are too stiff can cause the same problem as corroded pins. I never run pad springs in opposed-piston calipers for this reason; I used to run into it all the time on motorbikes, until the first thing I'd do was remove the springs and fit SS pins, and never had the problem again. I don't know whether it's practical to run a car long term without the pad springs, the environment is considerably harsher, at least if you have snowy winters in your region - which I'm thinking you do, since you're close to my new favourite place on the planet - Lincoln Nebraska

After that I'm not sure what to do

One other thing - the lack of squeal until initial brake application suggests pad knock-off. Check your wheel hub bearings for play - you may well have bad hubs. Large steering wheel movements as you get in and out of your garage/driveway/parking spot will expose any play and push the pads away from the rotor.

 

[dsmspick]

Check it again just to be 100% sure, make sure the caliper is as straight as possible. If it only happens after breaks have been pressed it sounds like you have a dragging break pad. Either try a differenr set of pads, or try new hardwear or clean yours up. I got new hardware when i did mine. I think i still have the plastics if you want part numbers for easy reference.

 

[Nikolay_Ruskov]

Did you fix the problem?
I have the same problem as you.
I replaced the calipers, pads,rotors,shims no shims nothing changes