911rox

Hey guys,

I thought I would post this information to assist those thinking of upgrading to PFC rotors. Regretfully their offering is so extensive that it even catches the suppliers out... The product looks great and after a weekend of bedding in and driving my new brakes hard, I'm thoroughly impressed. The acid test will be when the next track day comes about in about 3 weeks....

As you may be aware, there are two offering:

A slotted (motorsport) version and a dimpled (street version):

They are produced using the same materials and both good options. The main things that will dictate which you use is the pads being used.





The differences between rotors:

-Slotted rotors have a swept depth of 60mm and the dimpled rotors have a depth of 66mm.This is critical because some pads will not work with slotted rotors. For comparison, the sizing of the pads is as follows:

OEM (f)-62-3mm
Pagid 2707- 64mm
PFC 0991- 65mm
PFC 7819- 60mm (only pad size option for slotted rotors)

-Slotted rotors give greater bite whereas the dimpled probably less due to the dimples

-Slotted rotors are a little noisier due to the slots

- Please note that both use the same attachment system (now V2 system, simpler to that shown above) and whilst three piece, they do not rattle like typical motorsport rotors.

Now part numbers:

Dimpled rotors- FRONTS:

997.1 PCCB guys- use 379.067.85/86

These consist of the cup car hats (219.157.272.13) and friction rings (379.34.0066.43/44). The 5 holes in the hat have a diameter of 16.5mm to allow them to work with lug type or cup car drive pins.

The 997.2 steel or PCCB use- 379.068.85/86

These consist of the new hats suited to centrelock cars (219.157.273.13) and friction rings (379.34.0066.43/44). The 5 holes in the hat have a diameter of 15.5mm to allow them to hold the street car drive bobbins firmly.

Basically there is 1mm difference in hole size between the two but it is vital the centrelock guys have the correct hats because your oem rotors have a 15.5mm hole and the drive bobbins should NOT be able to move within the hat holes!

Please note: The slotted rotors use the same hats so you can always order slotted rotors to replace dimpled units with when they are spent...

Slotted rotors-FRONTS:

I don't believe PFC sell these as a kit for the gen 2 cars so your dealer will likely need to buy them as seperate components and assemble them for you (possible dimpled set, fitted off with slotted rotors)

The 997.1 PCCB guys will need the hats with the part # (219.157.272.13)- 16.5mm holes in hat

The 997.2 guys with centrelocks will need the hats with the part # (219.157.273.13) -15.5mm holes for centrelock drive bobbins..

There are two options for friction ring also:

32mm option- 378.32.0060.45/46 - allows 19mm pads

34mm option- 378.34.0060.45/46 (same thickness as oem) -requires 17mm pad like oem

and associated fitting hardware...


PFC rear rotors are available for 997.1 cars but seemingly not for 997.2 cars for the moment. I'm sticking with OEM for rears until PFC produce a rear setup for the 997.2 cars...

This information is provided to hopefully clarify for people what they need to use depending on their intended application. It is as I understand it and have researched thoroughly and been through the whole wrong hat issue recently so thought I'd make it easier for others. PFC were great and sent out replacement hats as soon as the problem was identified. Please double check all info posted here with your local supplier!

Also a good reference:

http://www.coordsport.com/attachment...PLICATIONS.pdf

Hope this helps guys

PS. Thanks to all the guys who gave me advice and help with this along the way! Won't name you all in case I miss someone but you know who you all are! Thanx again!

aussie jimmy

confused, but thrilled!
congrats, chris - good choice!

911rox

Confusing for sure Jimmy but it should hopefully make a little more sense then the published PFC info and all the part numbers thrown into the mix here... I hope

Running dimpled rotors with oem pad and they are awesome! No shudder, no noise, awesome stopping power!

NorthVan

Do you have a part number for the 997.1 rears. My car came with AP fronts, but OEM drilled rears. They will need replacing this season.

911rox

Dimpled or slotted?

For dimpled, i believe the part number you need is 348.076.85/86 and they retain use of standard hand brake according to the Porsche application guide above... For slotted, they may be able to fit 348.29.0060.43/44 friction rings to the hats that come with the street rotors above... Double check with PFC to be sure...

Izzone

Run eom it's cheaper

NorthVan

Good to know from a PFC far, thanks.

LVDell

How is oem cheaper when they crack like a SOB???

tasman

When I was looking into switching from PCCB to steel Orbit recommended PFC front rotors and sticking with the steel oem rears as it was more cost effective. Don't have enough experience to know if the rears crack like the fronts. Maybe others or orbit can answer this for you. Still have not made the switch though.

LVDell

They rec'd OEM in rear since PFC doesn't make a rear for the car.

tcsracing1

i have no issues with my OEM rears.....

tasman

When I talked to Orbit they said they could do PFC at all 4 corners but was more cost effective to do oem's at rear. I do not claim to be an expert at this just passing on what I was told. If questions go to the source. I should probably clarify that my situation is a 07 gt3 rs. Don't know if the same would apply to .2 gt3. Looking at OP information it does appear that there are .1 rears but not .2 rears available.

M3ike

I just had PFC slotted discs front and rears fitted to my Gen 1 GT3 RS and run them for 2 days in Spa in conjunction with PFC 08 pads. Braking power and modulation was great.

Cheers

Mike

stujelly

I have the slotted on the front and own on the back. I ran probably have 10 Turck days on oem rears with no issues and I leave the computer on. I have talked with alot of people and the pfc slotted rotors in the front and oem rears with the 08 pad are the hot set up. I also run the srf fluid.

However I am starting to hear good things about endless. I have no data yet

911rox

Rears dont appear to crack like the fronts! After 1850 km my fronts had 10mm + cracks (porsche allow up to 7mm) yet the rears are crack free... I would say rears will wear rather than crack and there cost is far less than PFC option...

For the moment, don't believe a hat exists for .2 cars on the rear....