I checked out the Pccbs on the 997. Besides a redesign of the rotor and better cooling there useing a differant pad. The rear was a P40-2 my GT2 has a P90-2. Does anybody know anything about the new pads? Tomorrow I'm driving the 997 with pccbs it will be interesting to see how they compair to my GT2.

 

Dear Carl,
I honestly cannot understand what you mean by comparing them. To me trying to compare the braking of a 997 with a GT-2 is apples and oranges.
The 997 brakes very well indeed but it is somewhat down on power compared to the standard GT-2. The GT-2 loads up the brakes far more if driven at its full capability.
You know what I mean you have one.
I am also told as with previous versions that these 997 PCCBs are not warrantied for the track and they have not been really user road tested yet either. That is what the purchaser is for
I believe any problems with these PCCBS fitted to the 997 will be much slower to appear because it is simply not a GT-2 or a GT-3 class of car.
One useless point but one I found interesting. I had a go in CGT last monday and it was fitted with steel rotors. I did not find out if this was the owners choice or the standard configuration for the Swiss version.
Ciao,
Adrian
964C4
GT-2

 

What I mean is not the preformance of the 997 VS the GT2 but do the brakes squeel and grind when they get hot. Long term time will tell. I'm also interested how the power feels compaired to my GT3. Thanks for you input. carl

 

A guy at my dealership told me that Porsche designed the 997 from the outset to accomodate PCCB (improved ventilation, etc.), hopefully eliminating all the troubles people have had with the system. We should start hearing road reports soon.

Still, I wouldn't want PCCB on my car. An $8k option that remains at best unproven, and at worst unreliable.

 

The problem is on mt GT2 I had no choice. carl

 

I drove one and thought the power was not even in the same league. Not even close. Disapointing if you ask me and the sticker was $99,000

 

Dear Carl,
I also meant that the performance of the brakes systems cannot be compared.
What most people would look for from such a comparison is;
Can the new PCCB system of the 997 be retrofitted to the GT-2 and GT-3?
The answer I have been given is no.
I know from the 997 I had access to that they function very well but there was no way I could duplicate the braking loads and forces I can generate on the GT-2.
Therefore by me saying the PCCB on the 997 work well as compared to the GT-2 means nothing in a practical sense. That be my point
Ciao,
Adrian
964C4
GT-2

 

Carl -- your brakes shouldn't be squealing or grinding excessively -- take it in. You may well have a pad(s) issue -- pads with severe stress cracking can cause your problems. Also, sometimes when the brakes get very HOT, the adhesive holding the anti-squeal shims in place breaks down causing some really terrible high pitched sounds during normal street driving. See what the dealer says.

 

I was recently getting a lot of loise from my PCCBs on my GT2 (my 2nd set of rotors) and then Ruf changed my pads when it was with them and now there's no noise, so it could easily be a pad issue.

Guy

 

The new rear pads on the 997 with PCCBs are P-40-2 the old pads are P-90-2 the same as the steel brakes on my GT3. I drove the 997 and the brakes do feel much smoother with no noise even when hot. Carl

 

Carl: I believe you need new pads on your GT2 -- my GT2 brakes don't make noise when hot.

 

From memory, the P90-II is the performance street pad. The GT2 was delivered with this pad. The P40-II is the comfort pad. Those few Turbos which came with PCCB's came originally with this pad. I quickly swapped my Turbo to the P90 because the P40 pads weren't up to the task. Many GT2 buyers swapped to the P40 for less noise.

There have been a few iterations of the P90 pads. Probably a few versions of the P40 as well.

So it isn't surprising that the 997 would be delivered with the P40 pad and that this would produce less noise. But the P40 pad is not the most heat resistant pad available.

Stephen

 

So the P40 is not new, is the black pad for the GT2 a p40-2 ? carl

 

Yes, if I remember correctly, this pad was originally painted black.

Stephen

 

The black comfort pad is wonderful on the street. NO noise NO grinding and No gritty feel. Porsche issued a bulletin back in Sept 2001 saying never to use them for track. The 40-2 sounds like a revision but I suspect the same caveat about not tracking with them applies. The original comfort pad would overheat on track and then disintegrate when they cooled down. Very ugly indeed.