Convert your 991 GT3 from Steel to Ceramics... - Page 2 - 911/Carrera GT - PistonHeads UK

http://rennlist.com/forums/991-gt3/853691-991-pccb...

They are replacement PCCB discs. i.e you need PCCB in the first place. Steels run different calipers etc

Reading the posts it looks to be available as both replacements for OE ceramic equipped cars AND as an upgrade kit with caliper spacers etc to convert an OE steel brakes (red calipers) car to the larger ceramic rotors. Almost $15,000 (£10k) so not a cheap upgrade....

but do you really think spending 10k plus on a bodged up brake set with standard callipers where the pad is too small for the disc a worth while upgrade??? (downgrade) i would rather stick with steels

Personally No! I'm more than happy with steel brakes for my needs but others might be...

Wasteful, learn how to brake more effectively.

Scott Parker said: but do you really think spending 10k plus on a bodged up brake set with standard callipers where the pad is too small for the disc a worth while upgrade??? (downgrade) i would rather stick with steels I have not verified this but on rennlist I think I have read the calipers are the same in both steel and PCCB set up. Think this solution is not as bad as you might think. Prices will come down and the most important aspect is that these discs will be refurbishesble for a fraction of the cost. So you can use them without constant worry that they will fail and need costly replacement like for the OEM set up. When I specc'd steel I had this in mind. I thought that if I ever found steel set up wanting (unlikely) I could switch to a better Ceramic set up than OEM which could be serviceable.

Shirley the same calipers as previous

Or go the other way... http://www.automobilemag.com/reviews/driven/1307_2... PCCB components wear at about the same rate as the standard steel setup during heavy track use. The high cost of PCCB pad and rotor replacement is a matter of consideration for a small number of Porsche owners. Due to this, Porsche offers a unique steel rotor and a brake pad setup for PCCB-optioned cars, available through the parts department at Porsche dealerships. Owners can then fit this steel setup to their GT3 for track days, helping keep the costs of wear items in check. Again, this setup is for owners who drive their cars very hard at the track and on a regular basis. Most owners do not need to bother with this setup but the option is there for the few that do. It's impressive that Porsche thinks about details like this. Read more: http://www.automobilemag.com/reviews/driven/1307_2... Follow us: @AutomobileMag on Twitter | AutomobileMag on Facebook Edited by 5517 on Wednesday 28th January 09:46

5517 said: It's impressive that Porsche thinks about details like this. I'd disagree - one of the key benefits of PCCB is unsprung weight reduction, which is more valuable on track. So their offering of steels for track use goes against the engineering behind PCCBs being fitted in the first place.

The new EVO magazine has a good article comparing steels vs. ceramics.

thegoose said: I'd disagree - one of the key benefits of PCCB is unsprung weight reduction, which is more valuable on track. So their offering of steels for track use goes against the engineering behind PCCBs being fitted in the first place. It looks like Porsche are making a big statement that ceramics are for road use otherwise the steel kit for PCCB cars would not exist.

These are surface transform discs, made just up the road, best contacting them IMO

5517 said: It looks like Porsche are making a big statement that ceramics are for road use otherwise the steel kit for PCCB cars would not exist. That is until you ring your OPC and they have no idea what you are talking about and have no such kit to offer!!

Hmm. So basically Porsche are admitting that the PCCBs aren't up the job? I really don't know what to do now... never had a GT3 before or a track car with ceramic brakes. I'm worried it's going to bankrupt me! I've booked about 10 trackdays and i'm driving to Denmark in August for one of them!!

PCCB are not good. Basically done after first set of pads. At least that was the case when I had a '07 997 Turbo. For track steel all day long. Alcons are just fantastic on my GT3. But JZM sells the CCX kit for just over 5k now! I heard they are very very good...

mm450exc said: PCCB are not good. Basically done after first set of pads. At least that was the case when I had a '07 997 Turbo. For track steel all day long. Alcons are just fantastic on my GT3. But JZM sells the CCX kit for just over 5k now! I heard they are very very good... You are talking about Gen 1 PCCBs - we are on Gen 3 for the 991 GT3 which are allegedly much improved for track use, providing you look after them properly.

sidicks said: mm450exc said: PCCB are not good. Basically done after first set of pads. At least that was the case when I had a '07 997 Turbo. For track steel all day long. Alcons are just fantastic on my GT3. But JZM sells the CCX kit for just over 5k now! I heard they are very very good... You are talking about Gen 1 PCCBs - we are on Gen 3 for the 991 GT3 which are allegedly much improved for track use, providing you look after them properly. 997.1 turbo PCCB are gen2 I believe... But yes - old. I would expect gen3 to be better but probably not as good as ccx.

mm450exc said: sidicks said: mm450exc said: PCCB are not good. Basically done after first set of pads. At least that was the case when I had a '07 997 Turbo. For track steel all day long. Alcons are just fantastic on my GT3. But JZM sells the CCX kit for just over 5k now! I heard they are very very good... You are talking about Gen 1 PCCBs - we are on Gen 3 for the 991 GT3 which are allegedly much improved for track use, providing you look after them properly. 997.1 turbo PCCB are gen2 I believe... But yes - old. I would expect gen3 to be better but probably not as good as ccx. Gen II PCCBs were 380mm at the front, 350mm at the rear.

^ Correct. That's what the 997.1 turbo has.

sidicks said: mm450exc said: PCCB are not good. Basically done after first set of pads. At least that was the case when I had a '07 997 Turbo. For track steel all day long. Alcons are just fantastic on my GT3. But JZM sells the CCX kit for just over 5k now! I heard they are very very good... You are talking about Gen 1 PCCBs - we are on Gen 3 for the 991 GT3 which are allegedly much improved for track use, providing you look after them properly. Could you clarify what 'properly' is? Cool down laps?

hondansx said: Could you clarify what 'properly' is? Cool down laps? I'm no expert, but I think this is a key part of this.

or pccb to steel... http://rennlist.com/forums/991-gt3/847034-replacem...

?

sidicks said: hondansx said: Could you clarify what 'properly' is? Cool down laps? I'm no expert, but I think this is a key part of this. As far as I'm aware, Cool down laps are grenerally more for parts which are oil cooled (ie engine and transmission, general mechanical parts etc, so as not to stop when hot and cook the oil into the system and to allow cooled oil to decrease temps gradually, which of course, is better for metallic parts) Ceramic brakes are technically air cooled, so a warm down lap isn't going to do anything other than extend the timeframe in which they're hot , no ? I'm happy to stand corrected, but would be interested to understand the science Especially as I have ceramic brakes on my car Edited by graeme4130 on Saturday 7th February 13:36