Squealing Ferodo's?
 

Looking for some feedback from anybody that has experience with ferodo pads, mine are squealing pretty badly at the moment. I just replaced my stock brembo pads with ds2500's 2 nights ago. I kept the shims, used brake lubricant in the calipers, and I'm still using my stock rotors. I bedded the pads in last night, process went as follows:

Warm up stops: (gave a minute to cool off between each stop, 50% brake pressure)

20mph - 0
40 - 20
60 - 30
80 - 40
100 - 50

Bed-in process: (Full pressure, just above ABS threshold. Completed as rapidly as possible)

60 mph - 0 mph 10x

Cruised the highway for 20 minutes to let them cool off, no brake usage.

80 mph - 0 mph 10x

Cruised the highway for 20 minutes again(no brake usage)

Got gas, parked the car using 1st gear(no e-brake)

Today, my brakes squeal like a cat thrown in a blender under light pressure, heavy pressure they're quiet. Is it possible that I totally destroyed my stock rotors during the bed-in process? The car has 17,8xx miles on it. Thanks in advance guys, I've given every ounce of related info I can think of.

Try resurfacing the rotors and see what happens. That's my only suggestion.

DO NOT RESURFACE THE ROTORS. Read the post at the very top of this forum, Im pretty sure there is a sticky.

When you put brake stop squeel on, did you COAT the back of the pads, as well as the sides? By the sides I mean this:

https://www.evolutionm.net/forums/at...1&d=1224131797

Those outside edges as well as the back plate need stop squeel. Also we used stop squeel on the whole backing plate, then applied the shim, then added some more to the back plate. But the big thing is those edges, alot of people dont get those and they squeel. Mine havent made a single noise in 10k miles and Im running ds2500's.

If you resurface your rotors, plan on replacing them very soon. They WILL warp. They dont come very thick from the factory, and lets face it we heat our brakes up pretty good stopping this car from the speeds we drive it.

thanks guys. any other opinions?

Another possibility is that when bedding in the pads you cooked off the brake lubricant. What was the temp rating of the lube you used?

What brake lube did you use? Did you clean everything very well and inspect all the shims for wear? Anything that looks to be making metal on metal contact (friction points) needs to be cleaned and lubed well.

I just did mine with ds2500's and they only make an almost unnoticeable amount of sound only when coasting 15mph or below.
I used the high temp aerosol crap form advanced as they didn't have the copper grease. I'm expecting to have to redo them but its all good for now


{offtopic}
Also about the e-brake, do these cars have shoes for that?

I put DS2500's on this weekend and they squeal horribly. I've been working too much to try and fix them but everyone got a good laugh at me yesterday on the way to work (until I showed them that the brakes work really well... too bad that guy didn't have his seatbelt on... hurt my back him hitting my seat so hard :lol:)

I did goo up the backing plates, but NOT the sides as the 3rd post in the thread shows. That was my plan for this weekend. The rears were very tight and I can see how they would squeal because of it.

What's odd to me right now is that light pressure = no squeal. Moderate to heavy pressure = squeal of death. Makes me think for sure it's not the back of the brake squawking, but the sides with motion/pull from really stressing them.

If you weren't so thick headed and stubborn you could have asked me for help, I have the same pads and mine are silent...why did you guys peel off the backing on the stock pads and re-use it?

Theres two ways you're making noises, either the pad contact is making the squeel or you have air behind the pad...possibly from not using enough anti-squeel paste or from reusing those pads on the stock pads which were not supposed to be scraped off and re-used...

I also HIGHLY doubt you trashed your rotors...I had 25k on mine with some auto x and mountain road runs on mine and they were still in good shape, did you discolor your stock rotors when bedding? Are you positive you got them up to temp? I did several 80-20 stops to the point my pads started to fade, you're not supposed to bring it down to 0 or you'll put pad imprints, but that would cause shaking and not really as loud of a squeel as you claim...

Maybe someone else should quote this and post this as you refuse to listen to anything I say even when I try to help you with something I already had first hand knowledge with...thats what forums and other evo owners are there for, a knowledge base...now you let some kid with a 350z and an STi that doesn't even know how to change his own pads helping you and you're making noises, go figure!

???? I hope this isn't directed at me and you just had a bad day or something.

No it wasn't, it was directed at me. Why didn't I pursue you in particular for help? Lets start by the fact that you almost never answer your phone. The internet seems to be the only way you communicate with people, as evidenced by you again not answering your phone when I called you a little while ago. Those "time attack" references and pics on the other boards were pretty cute too you know, obviously tires and brake pads = super time attack machine. But when I bust your balls back it's a direct insult right? Hmm...this guy is blatantly making fun of me for wanting new pads and tires for MY car to go on spirited drives, let me ask him and ONLY him for help! You have some nerve dude. If I recall correctly, before I even bought the ferodo's I asked you if you thought the price I was about to pay was fair, and you replied to me in generally uninterested one or few word answers, i.e. "duno" and "I bought them a long time ago". Earlier this week, I gave it one more shot to see if you'd be down to help but lo and behold - you didn't answer your phone. "Thick-headed, stubborn and refuse to listen"? You are impossible to get a hold of and when I do most of the time you have a huge chip on your shoulder. Why didn't I go nuts trying to get your help? Go figure! You have no right to be bent out of shape. The guy with the Z offered me his help when I mentioned I'd be changing my brakes soon, so naturally I said sure no problem I'll take all the help I can get. The dude with the STi just happened to be driving by my house when we were working on them so I called him and told him to come hang out.

As for the topic at hand, the stops made during the bed-in were from 60 and 80 to about 10 mph, not 0 and yes they were fading. Hence why my rotors are not shaking. We scraped the pads off of the back of the stockers because to us who had never dealt with evo brakes before they looked like a blackened and burnt piece that could have possibly been part of the shim that was fused to the brake pad from heat. And they fit that way so we didn't think it was out of the ordinary. Yes you have tons of first hand experience with all things evo, problems or otherwise, but if I can't get in touch with you and the few times I can you're in a bad mood, what good will come of that for me?

Maybe you're calling the wrong number because I have no missed calls, the only thing I broke balls about was you wanting pads, lines, fluids and rotors for a car that still has and only has all seasons on it...I think its way overkill and a waste of money....but back on topic...

I would clean off the back of the pad and remove anything behind/between the shim, regrease (or paste or whatever it is called depending on brand) and use a liberal amount as any amount of air behind the pad can cause a high pitched squeel.

Yes, as do most all cars on the road today have. And I too found it strange that the op purposely avoided using the e-brake. No harm in using your e-brake when you come to a stop. As a matter of fact, what do you do when you got to stop for a light after you've heated your brakes? Stop your motor and put it in gear? Hell, no. The e-brake is perfectly okay to use when your brakes are hot, because when the handle is up and the shoes pressed in the drum of the rear rotors, the pads do not make contact with the disc. Two separate systems.

Still calling the number I was given, and I had a very good deal set up with a set of direzzas that was supposed to have gone through by now but is on hold at the moment, which is why I was trying to line everything up for myself with the brakes.

Where can I get more high temp pad lube/grease/paste? It seems like something as specific as that will need to be ordered online.

As for EVO X Owner, I was fortunate enough to not encounter any stop lights during the process, and as I don't know the finer points of how things like that work I didn't want to take any chances by parking the car with the brake. Good to know for next time though, thank you.

in any case, I pulled my pads, cleaned everything up. I used the 2000*+ copper anti-seize (on the backs and as directed above) and now I don't get the heinous squealing. I didn't get any at all until after my autocross today. Now I get a little squeaking right when I finish braking, but really not enough to care about.

We'll see how things work out over the next couple weeks.

imnot going to get into any if this drama, but as far as your bedding procedure, it was pretty wrong. Those 80-0 and 60-0 stops could gave done more harm than good. Never fully stop the car during a heat cycle. Anyways you have my number as well, and although I'm not a mechanic, I do have a little experience with basic maintenance. could always just call.