mark kibort

I guess I'm just lucky then.

scorcherjf

I read through the past posts so I'm not sure if I missed it, but I would love to know what the proper bedding process is to prevent squeal?

Coochas

A German car that does not have squealing brakes has no brakes.

Gofishracing

Kibort Braking bedding procedure. In all seriousness- Pagid go through stages it seems. I don't run them anymore. Even with PFC's I'll get squeal it seems at times. I always use to run floating rotors -which just adds to the harmony (but I hate Giro Disc- sorry) . Back right now to just nice Deman Rotors. Lasting forever it seems. Mark must know the secret.

mark kibort

yes, the truth is, its a "procedure" that must be done from the pads out of the box.. when done properly, there is no squeak or noise on or off the track and it never occurs later either. floating rotors (true floating rotors) can add a variable. my floating rotors are not true floating, and that might make a difference.

PM sent.

996tnz

Mark, I'll consider your procedure if you could PM me it. But that transfer layer on my rotors is pretty obvious after racing or solid track sessions . I may not swap out my pads but I do swap wheels and tires between track and street so get a good look each time. It's easily noticed through the wheels too when it starts to wear off again as it is patchy (well, more streaky really) for a few days before it fully disappears again.

Granted, some pads (sintered ones, and maybe carbon or ceramic based if not using an organic resin binder?) might perhaps not produce that transfer layer on the rotors when hot, but my Pagids do, and they do run quiet while it lasts.

Thanks for sharing that. Been wanting titanium shims to better protect my pistons - and so fluid - from pad heat (and ideally ceramic calipers) but have held off, mostly just as it is already tight there when fitting new endurance pads.

mark kibort

I understand your observations. The film is visible (smearing) during the bed in process, but after, it will never appear again, especially if you are racing the car. i showed picuturs of this at the runoffs when i put on the 2 piece rotors for the first time. (bedded at the track) however, after the first qualifying it was totally gone and very clean. i also have a video of taking the stock rotors off the car right after the race, and showed using emry cloth, sand paper and scotch brite to show there was no film anywhere. again,it has to do with temp and pressure. And this is a Pagid black or orange pad as well. (RS14 or RS4-4. ) so , with my 20 years experience with this, i can tell you when you see the smear...... you hear the squeal. sometimes you dont if its very even. then, when you hear it when its gone, its because the surfaces are not aligned as good as they can be. its a very high frequency "bite and release" that creates the noise. when the rotors are clean and pads are bedded properly, you dont have that.

there are all sorts of theories out there, but this is what I have observed and the proof is in the experience. anyone that has been racing with me and shares a pit and repair activities, has NEVER heard a squeal at the track or on the street. glad you think it is worth a try . anxious to hear how it works for you. PM sent.

Mk

OirishKev

Would you mind PM'ing me also please. Love my RS29s on my track car. So much so I thought to put them on my cayman. WOW do they squeal.

mark kibort

The RS29s are the wild card.. they are pretty hard and its the one type of pad i havent tried. (endurance pad) however, i was told that the EBC Orange is a similar pad and it was one that took a lot of effort to bed properly... and even that was successful on the performance street car i own as well. (14" rotors , brembos , etc)

Ill PM you now and let us know how it goes. if you just put them on recently there is still a good chance you can fix the noise. rotors are in new or near new shape?

bpu699

I run pfc 11s and they don't squeal... Usually...

Gofishracing

Mark. I think you are incorrect. RS29 Black are not the endurance pads. Yellows are. 29's were the pads I was referring to that go through stages. YOU could not keep them quiet. New rotor or old?

garyever

My new Pagid yellow pads started squealing a few days after being installed along with new rotors a year or so back. Porsche mechanic's previous break-in instructions were to not do any hard braking until I had put some miles on them. After a few more days I did three or more panic stops form 60 mph to almost "0" on an open stretch of the freeway and the hard braking rubbed off whatever was causing the vibration. I do the same procedure on my mountain bike when trail grims builds up on the disk brakes, and same on my pickup, when I start hearing that squeal. Now after a year, every few months I hear squeals, do the same hard breaking, and the squeals disappear for a while. It appears to me to just be accumulated brake dust and grime. Give it a try.

996tnz

Mark - awaiting your PM still. Mine too are the RSL29s (rear anyway - RST2 reds front) and are possibly the world's best squealers so would be a good test.

It takes a serious bedding procedure (the kind that would see me pulled over on road) or serious track laps to shut them up for even a day. Even an autocross day a month or two back (won, so wasn't hanging around) didn't get them hot enough to quiet them for even that long.

996tnz

Hi Gary. There are 2 basic kinds of Pagid Yellows - endurance pads and road pads. Do you have the RS19/RS29/RSL29 endurance racing pads, or do you have the road yellows (Pagid P90s)? If you're only hearing squeals every few months I'm picking the road P90s, unless you are hitting the track or bombing a decent canyon a couple of times a week?

FWIW, endurance yellows squealed on my OEM rotors, and then the same on Sebro slotteds - despite the slots theoretically helping to keep the pads clean.

mark kibort

I never said that the RS29s were "Black". the RS29 are the endurance pad. (yes, they are called "yellows" )