This past weekend I replaced my squeaky jeep pads for EBC Red's and turned the rotors in hopes of eliminateing the SQUEAK. Now the squeak is so bad I can not drive the GC, seriously it is loud and I have a borla S. The squeak makes the borla sound like a lexus exhaust. The squeak is coming from the rear only. Here are the things I tried this weekend on turned rotors: 1st just pads as they come out of the box 2nd pulled pad for inspection and cleaned entire brake assemble, replaced pad. (Squeak only got worse) 3ed went to auto parts store and put on anti-squeak stuff they sell, lasted one red light. 4th added copper past as per jeep TSB , lased 2 light. OH Yes I did seat them several times. Any ideas on how to stop the squeak or at least make it quite. I tried turning the radio up. Should I just put back on hte old pads, they were a lot better.......
Take the pads off and find some outdoor concrete that is rough like they swept a broom through it before it dried then take the pads to that and aggressively rub the pads on the concrete. You are attempting to get rid of the glaze and the concrete works as the best sand paper possible. Rub the pads for a while and then look at them to make sure you have cleared the whole pad, and have a new rougher surface....the concrete will be full of brake dust and be black, and it will seem like you are wasting valuable brake life, but it should work if everything is installed right....
Just in case... brake squeal is due to the rapid vibration of the pad. grip, release, grip, release. The stickier the pad the more likely it's going to squeal. It's like when you wash a glass and drag your finger on it. One thing that helps is shims (don't know why but I'm guessing it sort of cushions them making them less prone to vibrating). I think my rear stock pads (Magnum) had stainless shims under them. When I replaced them with the Posi-quiets I used the old shims (not required). Of course mine didn't squeal stock and didn't squeal after. So I think it's more a case of some pads are prone to squealing and some aren't, and it's mostly due to the pad composition. General rule of thumb is that the more aggressive the pad and high performance, the more likely it is to squeal when coming to a stop under light pedal pressure. Most race pads are really bad in that respect. I really don't like to spray anything on brake pads. It's kind of like greasing them so they don't squeak... and who knows what it does to the compound. Roughing the pads sounds like an interesting idea. I'd expect that to work longer than any sort of spray but would expect the squeal to return as soon as they get smooth and glazed again.
Usually at that point the pad and rotors have began to understand each other and the squeaking does not return. I have never owned a pair of EBC's so I cant say it will work forever or not, in previous vehicles with different brake setups, it has worked forever....I suggest if possible put the shims in that came from the factory if you havent done so yet I have to agree that spraying that shit they sell at napa is basically just like throwing money around and making a mess while your at it. I have yet to see any spray work...
The interesting thing is, the squeak starts at 30MPH to 0, no matter the amount of pressure being applied. I can be stopping from 40, 50, 60 with the same amount of break pressure and the squeals starts at 30MPH every time. Are shims available? from where
Getting the pads and rotors to "understand each other" should be the result of properly bedding the pads. How did you "break them in"? If you didn't do so, try this first (or maybe after roughing them?) http://www.zeckhausen.com/bedding_in_brakes.htm Pay attention to the note about not coming to a complete stop until the rotors have had a chance to quit glowing.
There should have been shims with your stock setup unless they did the TSB (which was removed from the system) that said to remove the shims. After that TSB, DCX made a new TSB that said to replace the rear pads with the new shims which were included with a new set of brake pads. Not sure if you can purchase them individually, but a simple phone call to your dealer would answer that for you. I use the stock pads, and had all sorts of problems with them, I had the dealer turn my rears, install new pads with the shims and havent had a problem in thousands of miles...
To be completely honest, I think bedding the brakes is complete bullshit.... It "may" make the brakes work better, but it is not going to determine whether or not they squeak
You may be right on that. It does match the pad surface to the rotor surface and transfers some brake material to the rotors. It may not have any effect on squealing... and now that I think about it I suppose it could make it worse since the brakes will be working better. 34z28, it makes sense that it does it at 30 to zero. At slower speed the pad has a chance to grab, release (and move back a tiny bit), grab again, repeat. At higher speeds it doesn't have a chance to do this or if it does it's at a different frequency and doesn't make noise. Again, the dragging your finger across a glass analogy.
Yes, I did bed the pads with rotors, 50-5 hard braking, 5 times. Lots of fun, great smell. The pads I have do not have shims. I have had my GC in 7 time to fix the squeak which means 14 visit, Dont get me started, I have been round and round with Chrysler they suck. Sorry, a little off topic.
Well if it were me I wouldnt be afraid to take them to the concrete....And yes, the brake problem is a little ridiculous...
I've got EBC reds orderd for my '08, I haven't had the wheel off of my truck yet, but I'm wondering how the calipers are mounted to the adaptors. When we set up a set of Wilwoods at the shop, we have to shim the caliper to center it over the rotor. ( if you don't they'll squeal like a beeotch, and wear pads ) Is there a chance that the factory set up could benifit from shimming the mounting brackets to make sure the calipers are exactly centered over the rotor? I intend to Mic. mine when I install my new pads just to be sure. Kinda makes sense that some would possibly be misaligned from the factory, since somecars squeal, and some don't.
The concrete might help, shims might help, but it may be that the EBC Reds just aren't for your car. The stock pads are hard to beat and some squeal (mostly Jeeps in the rears). You may have to try a couple of different pads and it may even come down to a compromise between quiet pads and sacrificing some performance.
They ALL squeal after a certain amount of miles....there is no need to center them, thats what the slides are for...
It will cheaper to get a lawyer and sue Chrysler to fix their problem. At $200, it will get expensive fast. I appreciate all of the advice, I guess I will go back to the old POS pad from the factory. At least it is an easy job.
Havent heard anything about the EBC's on the Jeeps, so I guess you were the pioneer...Did you get them from Bwoody? I would seriously try the concrete though....It sounds ghetto, but it always works for me and numerous other people with Hi-Performance brakes...
Yes, purchased from bwoody based on their suggestion from this forum. I will try the scuffing, I do not have anything to loose.
BTW: I checked the EBC web site, EBC pads have shims installed. I sent them the same questions on how to stop the noise
I know Mike and Gregg are cool so I am sure they are wanting to know what these pads do as much as you do...I would try some scuffing and hopefully that works, if so I am sure Bwoody will hook you up for your troubles and being a pioneer
