PCCB For Track -Update
03-01-2005, 12:31 AM
#151
Burning Brakes
Join Date: Oct 2004
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Thanks, all, for the interesting info on PCCB. I've been following the PCCB trail in possible hopes of picking up a 2nd-hand set, but now I'm not even sure they'll stand up to hard street driving. I'm often on the ABS.
Additional info I've found:
Carnewal has the 330mm rear calipers in yellow. You don't have to paint them. I believe they are the same as the TT parts as well--just yellow.
http://www.carnewal-europe.com/cpx_p96172.htm
From my "brake parts spreadsheet" that I've been accumulating, all rear calipers from base Boxster through GT3 use 30mm and 28mm pistons, so any difference in brake bias would be due to the effective diameter change only. For a 350mm PCCB rear to a 330mm steel, this would be on the order of -5% which is probably about the difference between different pads. There might also be a slight difference between the coefficients of friction between steel and ceramic and pads, but that's anybody's guess.
HRP sells Brembo GT3R 2-piece rotors (aluminum/floating) which are the right disc sizes F 350x34 and R 330x28. I contacted them about who makes them and no reply. The replacement discs are reasonably priced, but I don't know if the whole setup on a GT3R uses a different offset or what.
http://www.hrpworld.com/index.cfm?fo...action=product
There were a few dealers selling PCCB "kits" for around $10K. This sounds like a no brainer if you want to buy replacement PCCB rotors. Buy the "kit" and throw away the calipers (or sell them to me, and I'll source some 2-piece steel rotors). I'm not finding them on websites now, so maybe Porsche was trying to clear-out PCCB-1 stuff?
Unrelated, but special thanks to Bob Rouleau for his info/comments on R-compounds on the street. I love my Dunlop SSRs and don't think I can go back to street tires!
Additional info I've found:
Carnewal has the 330mm rear calipers in yellow. You don't have to paint them. I believe they are the same as the TT parts as well--just yellow.
http://www.carnewal-europe.com/cpx_p96172.htm
From my "brake parts spreadsheet" that I've been accumulating, all rear calipers from base Boxster through GT3 use 30mm and 28mm pistons, so any difference in brake bias would be due to the effective diameter change only. For a 350mm PCCB rear to a 330mm steel, this would be on the order of -5% which is probably about the difference between different pads. There might also be a slight difference between the coefficients of friction between steel and ceramic and pads, but that's anybody's guess.
HRP sells Brembo GT3R 2-piece rotors (aluminum/floating) which are the right disc sizes F 350x34 and R 330x28. I contacted them about who makes them and no reply. The replacement discs are reasonably priced, but I don't know if the whole setup on a GT3R uses a different offset or what.
http://www.hrpworld.com/index.cfm?fo...action=product
There were a few dealers selling PCCB "kits" for around $10K. This sounds like a no brainer if you want to buy replacement PCCB rotors. Buy the "kit" and throw away the calipers (or sell them to me, and I'll source some 2-piece steel rotors). I'm not finding them on websites now, so maybe Porsche was trying to clear-out PCCB-1 stuff?
Unrelated, but special thanks to Bob Rouleau for his info/comments on R-compounds on the street. I love my Dunlop SSRs and don't think I can go back to street tires!
