The yellow ceramic disk that is supposed to attach to the caliper piston fell off. Does anyone know what kind of adhesive requires to re-attach it back? I've asked Loctite representative that they do not carry any adhesives rated higher than 230C.

 

Do you have a photo?

 

i will take some photos tonight

 

Wait, what? I don't get it. Isn't the disc secured by nuts to the hats? How can it fall?

 

no, i think you are referring to the rotor.

I'm talking about the yellow ceramic disks that are attached to the top of the caliper pistons.

 

Try Wurth usa, they care and supply most OEMs with products.

http://www.wurthusa.com/project/en/t...tartpage_1.jsp

 

Thanks for the link.

There is still no adhesive that can withstand high temp in their catalog. However, there maybe an alternate solution. I'm thinking maybe high temp RTV - usually rated @ 600F - will do the trick since the yellow ceramic disk is in constant compression mode during braking. Basically a compound that can hold/secure the disk to the piston shall be good enough.

Another solution is the exhaust assembly paste from WURTH per above link. It is rated @ 1292F and this paste becomes metal hard with exhaust/braking heat.

I'm still wondering about what kind of adhesive that Brembo/Porsche used?

 

they have many things that are not online. You might want to contact them and they will have a local rep or tech guy contact you.

I used to work for them and sold many adhesives to race teams, etc. I think the one you are mentioning is used on aircrafts. They sell many bostich products as well.

goodluck

 

Are you talking about the round disc that inserts into the caliper piston? These are the anti squeal shims....if so just use some needle nose pliers and pop it back it. I never use adhesive to re-install my anti squeal shims.

 

no, the yellow ceramic disc is sandwiched between the piston and the anti-squeal shim you're referring to. So the anti-squeal shim actually inserts into the yellow ceramic disc. Anyways, i'll take a photo when i get off work tonight.

 

Don't worry about it, but make sure to put it back in the piston. They always fall out, especially if you track the car. The heat makes the rubber seals brittle and useless, so nothing holds them when the pads are out. Makes it a real PITA to change pads, because you have to hold all three in while putting the pads in. Make sure to put them back, and do NOT lose it, as Porsche does not sell them separately (and no 3rd party sells them) and you would have to buy a new caliper! On older GT3s, the yellow ceramic disc your talking about have metal anti squeal discs pressed into them which can be removed and discarded.

 

Here is a snap shot of the yellow ceramic disc. It basically came off when I tried to replace the dust boot.


Uploaded with ImageShack.us

 

I'd rather have the discs secure to the pistons for peace of mind especially this is part of the braking components. If one of the discs somehow dislodged during braking, it could crack the brittle ceramic disc and having regrets later. Especially when the dust boot is brittle, worn, and the mounting depth on the ceramic disc is shallow, nothing would really hold it in place other than the adhesive.
Yes, i've tried to find out if anyone sells the ceramic disc without any luck that's why I want to make sure it gets done the proper way.

 

I have never heard of anyone gluing it. There is zero chance of if it dislodging under braking. If you want to keep it place, go get new dust seals ( and plan on replacing them every 3 track days). I've personally put over 150 track days on gt3s with those discs loose, no issues, and know many others who do the same, but feel free to do as you wish.

 

Don't use adhesive, just put the disc back in it's place when you change pads. It happens to me as well.