Adam2S

Here are a few pics from various press GT3's very recently reviewed. They all appear to feature some rather strange (ugly) brass coloured clips secured by small bolts just inside the brake disk.

Anybody have any idea what on earth they are and if they will make it to the production cars??

Recent review pics :





Closeup :



Interestingly some of the the earlier cars reviewed didnt show these at all - the cars all seemed to have a clip/bolt free design that was somewhat nicer to the eye!

Earlier pics :




Closeup :

NoSubEDU

Most likely brembo-sourced clips that are responsible for keeping the rotors "quiet".

Adam2S

I posted this to Rennteam at the same time and somebody there has spotted why already! Looks like its PCCB (gets the clips) -v- Steel (no clips).

Anybody any idea why PCCB's need these ugly clips then?

sws1

Isn't that a function of floating vs non-floating rotors? Floating rotors use the clips (invented by MacLaren), and non-floating don't.


http://www.zeckhausen.com/Brembo/Rotor_Replacement.htm

MJones

There is a difference between the steel & PCCB.
The PCCB disks are connected to the hub via screws & nuts.

From Product News
In the new 911 GT3, clip-type springs are added to the connecting elements, allowing limited axial displacement and improved radial compensation between the brake disc center section and brake disc. This improves true running of the brake discs under high thermal load and prevents brake judder even under extreme strain.

2007/8 connecting element shown:

NoSubEDU

^ what he said.

Adam2S

Hmm - well they are UGGLLLYYYY! Looks like dental braces on your wheel!

If the price and the fact the steels are great anyway dont put you off PCCB's on a mk2 then the sheer ugliness will!

KINGSRULE

Remember the 997 GT3 had a recall on PCCB's to re-torque those bolts that hold the hats?

Well I think these new clips are there to keep tension on the bolts so they won't back out.....

flash1034

I like the look.

Flash

9fan64

They help with the hard Braking and Expanding...

Larry Cable

EXACTLY ...

Larry Cable

Eeek, my dealer never called me on that one, got any details? was it all 997 PCCB's or just a certain production run?

flash1034

Those updated "standard GT3 brakes" are looking better and better over the PCCBs.

Flash

sws1

I believe it was certain production runs of PCCBs. It affected mine. Was about 30 mins at the dealer.

MJones

Sep 21, 2007
Voluntary Workshop Campaign on certain 2007 model year 911 GT3 (997) and 911 GT3 RS (997) vehicles.
It is possible that one or more of the screws can become loose when the vehicle is driven, especially if the driver brakes frequently in the ABS control range.

A total of 266 US, Puerto Rican and Canadian vehicles fall within the scope of this Workshop Campaign.