Pagid RS 29 to PFC 08
10-18-2012, 03:39 PM
#31
Race Director
Personally I don't see how this is possible. I have cracks in my stock front rotors from using the stock pads on my 4.0 at Road Atlanta and AMP. And this is with fewer than 30 laps on the car total. Are you running aftermarket drilled rotors? Are you talking about heat cracks on slotted rotors?
I will even explain further why I don't understand. Every car that I see reach speeds similar to a Porsche on track will slightly crack its rotors in a simple DE session. The heat from the friction of any pad on the rotor causes small cracks to form in the metal. These are not bad cracks either. It is simply the way metal responds to the temperatures reached under extreme braking. My GT3 RS with stock pads will slightly do this even after hard street driving. This is why I am perplexed at the reason behind the statement of Pagids will not crack your rotors but PFC will.
I will even explain further why I don't understand. Every car that I see reach speeds similar to a Porsche on track will slightly crack its rotors in a simple DE session. The heat from the friction of any pad on the rotor causes small cracks to form in the metal. These are not bad cracks either. It is simply the way metal responds to the temperatures reached under extreme braking. My GT3 RS with stock pads will slightly do this even after hard street driving. This is why I am perplexed at the reason behind the statement of Pagids will not crack your rotors but PFC will.
10-18-2012, 04:33 PM
#32
Rennlist Member
A friend sent this chart to me which is a nice visual representation of the supposed chartacteritics of various pads. How accurate it is, I don't know. I've never used anything but PFC, Pagid, and Raybestos pads.
10-18-2012, 05:50 PM
#34
Rennlist Member
10-18-2012, 06:26 PM
#36
Race Director
Totally agree..I tried out PFC01 early this year and they killed a set of rotors and transferred too much heat to the caliper in 1 DE. The PFC01 where like a on/off switch, really hard to modulate in my car. PFC08's are much kinder to the rotors and caliper, great bite, easy to modulate.
10-18-2012, 06:50 PM
#37
Is the Green P50 'ceramic' pad the RS14 or RS 15 supposedly?
I used the PF01 years ago on a heavier street / track car with Stoptechs for trackdays and hated them - impossible to bed them in / not get pad deposits / keep working in a consistent way. I was very new at the track thing back then but the Pagid Oranges were much better back then than the PF01s.
I think I will try the PF08s on my ceramic rotors and see how they do - look promising.
I used the PF01 years ago on a heavier street / track car with Stoptechs for trackdays and hated them - impossible to bed them in / not get pad deposits / keep working in a consistent way. I was very new at the track thing back then but the Pagid Oranges were much better back then than the PF01s.
I think I will try the PF08s on my ceramic rotors and see how they do - look promising.
10-18-2012, 08:20 PM
#38
Rennlist Member
Personally I don't see how this is possible. I have cracks in my stock front rotors from using the stock pads on my 4.0 at Road Atlanta and AMP. And this is with fewer than 30 laps on the car total. Are you running aftermarket drilled rotors? Are you talking about heat cracks on slotted rotors?
I will even explain further why I don't understand. Every car that I see reach speeds similar to a Porsche on track will slightly crack its rotors in a simple DE session. The heat from the friction of any pad on the rotor causes small cracks to form in the metal. These are not bad cracks either. It is simply the way metal responds to the temperatures reached under extreme braking. My GT3 RS with stock pads will slightly do this even after hard street driving. This is why I am perplexed at the reason behind the statement of Pagids will not crack your rotors but PFC will.
I will even explain further why I don't understand. Every car that I see reach speeds similar to a Porsche on track will slightly crack its rotors in a simple DE session. The heat from the friction of any pad on the rotor causes small cracks to form in the metal. These are not bad cracks either. It is simply the way metal responds to the temperatures reached under extreme braking. My GT3 RS with stock pads will slightly do this even after hard street driving. This is why I am perplexed at the reason behind the statement of Pagids will not crack your rotors but PFC will.
Fronts got close to 1mm deep grooves now in the middle section from wear, time to change them next spring.
No one who drove my car complained about any lack of a stopping power, it works fine.
I will get pfc08 for next season, will see how it will feel.
Last edited by utkinpol; 10-18-2012 at 08:57 PM.
10-18-2012, 09:07 PM
#39
Drifting
Thread Starter
FWIW, I ran about 8 DE days and 2 open track days this season at LCMT and I have small cracks (5mm) in connected to the drilled holes in the front rotors using
RS-29s.
RS-29s.
10-18-2012, 09:47 PM
#40
Still plays with cars.
Lifetime Rennlist
Member
All rotors with holes crack - normal. One thing to be aware of is that our pads do not wear evenly, they taper so when you look at them they make look OK but the ones on the inside may be tapered more and near the wear limit. Having seen all the comments, I'm ready to give the PFC's a try if I can find a local supplier.
10-19-2012, 08:18 AM
#44
Drifting
Thread Starter
Also, aren't there some bolts that should be changed when working with the pads/calipers or this only when you change rotors?
10-19-2012, 09:29 AM
#45
Race Director
In the track crowd I'm with I do not see anyone use braided brake lines. Also when removing the caliper the caliper bolts are supposed to be replaced because they are what is called a stretch bolt and a one time use bolt. However I know some don't do this...uh...um....maybe the bolts for uh in yellow cars are different...LOL! Anyway most swap out to caliper studs then you don't have to mess with these bolts. Wonder why Porsche just doesn't use studs from the factory?