996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

PCCB's again!

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Old Jan 27, 2007 | 02:59 PM
  #31  
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ebaker is infamous around these parts
StopTech had some carbon brakes at SEMA. These might be a good alternative if they make them for the 996tt.
 
Old Jan 27, 2007 | 07:19 PM
  #32  
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The company that is building our motorcycle Metal Matrix Composite rotors for us is working on Porsche Rotors as well. I hope to be testing a set on my car this summer.

The MMC motorcyle rotors are 10% heavier than the carbon/ceramic rotors but are only half the cost. The new generation of coatings and pads allow for a friction co-efficient of .72 which is much better than our iron rotors.

It will be interesting. If anyone is interested, I'll post information as it becomes available.
 
Old Jan 29, 2007 | 12:29 AM
  #33  
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Midnight Blue is infamous around these parts
Originally Posted by SMR
Same guy i have heard whining again and again
Chill dude


Original Porsche 350mm steel rotors will last no more than 4-5 trackdays useage before they are no longer serviceable due to cracking.
For fast road use they are more than up to the job and should remain serviceable for several thousands miles.

The Alcon rotor conversion I have fitted on the front of my car (and most likely on the rear soon too) will last 25 HEAVY trackdays before they are deemed unserviceable.

The Version 1 PCCBs are a waste of space. The link to the PistonHeads thread shows the front PCCBs off my 2002 GT2, this is the cars second set in 17,00 miles..................

Judging by the number of people complaining on PH over the past four years. failure is pretty much guaranteed if they are used on track, (though sustained heavy road use will cause them to fail too)

So SMR, please don't try and tell me there is nothing inherently wrong with their design, if there were no issues with them, Porsche wouldn't have released a second and third version of them would they ?.........................


Furthermore, the 997 GT3 /RS (and Turbo ?) now uses a 380 mm PCCB rotor on the front, NOT the previously used 350mm rotor, this is because the PCCB rotors core is unable to dissapate heat as quickly as it's steel counterpart, hence Porsches attempts to manage heat build up in the rotor core with modified cooling and vent holes (and also by the increase in rotor diameter)

Midnight
 
Old Jan 29, 2007 | 08:35 AM
  #34  
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I have used my gen1 on the track hard, very hard and have no problem, but i know people that had and they have have wrong pads and the pads hade been to worn down to much and start damining the dics...so if you do wrong you can damaged them, but thats the same with everything....

And i agree with you about the stock steel ones, they crack,long before they are finiched

And about gen 1,2,3..That´s evolution, thats why we have 993,996,997 and etc...Things move on..It´s not becouse they where so bad
 
Old Feb 12, 2007 | 05:17 PM
  #35  
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Originally Posted by porschespeeddem
I have an article on the new Gen 2 and newer ceramic brakes I am trying to get scanned sometime, it will clear up a LOT of the PCCB questions about their longevity and abilities. Not sure if the article was publicly available, I got through my Porsche website through work I have to log into. VERY good read when I get it uploaded. One instance was a GT3 test car that went 186,000 miles with NO WEAR. The rotor was still a full 34mm thick just like new. The old ceramic discs had 3,000 fibers, the new ones have 400,000 fibers. There are also twice as many air outlets in the rotor. You guys will thoroughly enjoy this article, unless it has already been posted once before. These are just a couple of the examples from it, truly amazing what the new PCCB's can do.
would love to read this article, please!
 
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