Full PCCB GT3 Big Brake swap for an '88 951
#3
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Pics are not working..
#4
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So long as you don't have Mo30 it will be easy enough. What size are the rotors? Not cheap.
#5
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Whoa! This is from a 997 GT3?
Care to share how much those cost?
Care to share how much those cost?
#7
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Sounds good. Obviously the plusses of Ceramic rotors is the lightness. The downside is the costs. Seemingly a lot of the GT3 crowd that track their cars remove these and swap to steel rotors. Be awesome to remove some unsprung weight though.
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#8
#9
Yes, these front and rear rotors weigh only 12.5 lbs each. Less than half of the inexpensive 350mm Cayenne rotors I have used on many other swaps/upgrades. These coupled with lightweight forged wheels will be well worthwhile...
#11
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Most of the GT3 track guys are removing those brakes and going to traditional steel rotors.
I couldn't imagine running those on the track, far above my tax bracket for expendables...
I couldn't imagine running those on the track, far above my tax bracket for expendables...
#15
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There have been 3 generations of PCCB compounds. So I think you have to look at the feedback in those terms. What was true of the first gen 996 PCCB's may not necessarily be true for the compound you have in a 991 GT3.
The issue seems to be too much heat on the track (for some drivers). From what I've learned lately (I've been studying this a lot in deciding whether to get them and talked to our local Ferrari team and techs about this) carbon-ceramics are designed to operate at a higher temp than iron rotors. That is how they work at their light weight. (X amount of kinetic energy into a light weight rotor necessarily means a higher peak temp. That's the "price", if you will, for the low unsprung weight and lower rotational inertia.)
But basically in real world track use, the temps people were seeing were higher than expected and that causes *Extremely* accelerated wear on these things. Then what that happens, you get the surprise of replacing rotors that cost so many thousands of dollars *each*.
The latest gen compound (on the 991 GT3/Turbo and 981 GT4 and maybe some other cars) may be better at this. I don't know that we have enough data there, but it seems there are fewer complaints about this now (again, that may be because there is less experience with the new cars). Also the 991 GT3 and 981 GT4 have even larger rotors and more fine-tuned cooling, which may help (or may not). I guess we'll see.
Bottom line for me is that I got them on my car. I will monitor track wear carefully, and if I see an issue there I will get standard rotors for the track and keep the ceramics for street use.
The issue seems to be too much heat on the track (for some drivers). From what I've learned lately (I've been studying this a lot in deciding whether to get them and talked to our local Ferrari team and techs about this) carbon-ceramics are designed to operate at a higher temp than iron rotors. That is how they work at their light weight. (X amount of kinetic energy into a light weight rotor necessarily means a higher peak temp. That's the "price", if you will, for the low unsprung weight and lower rotational inertia.)
But basically in real world track use, the temps people were seeing were higher than expected and that causes *Extremely* accelerated wear on these things. Then what that happens, you get the surprise of replacing rotors that cost so many thousands of dollars *each*.
The latest gen compound (on the 991 GT3/Turbo and 981 GT4 and maybe some other cars) may be better at this. I don't know that we have enough data there, but it seems there are fewer complaints about this now (again, that may be because there is less experience with the new cars). Also the 991 GT3 and 981 GT4 have even larger rotors and more fine-tuned cooling, which may help (or may not). I guess we'll see.
Bottom line for me is that I got them on my car. I will monitor track wear carefully, and if I see an issue there I will get standard rotors for the track and keep the ceramics for street use.