Cayenne turbo brakes!

[ekam]

Saw a guy with a TT on the track using those brakes on Saturday. Not sure what he's got on the engine but with coilovers/H&R F+R sways he was damn fast.

He had to get special 2-piece rotors which costs him $2k for the whole set.

[Cloudsurfer]

A friend of mine (who does race car fabrication) is working on developing floating rotor kits for our cars, which should be MUCH more attractive than $2k a set.

[ekam]

Originally Posted by Cloudsurfer

A friend of mine (who does race car fabrication) is working on developing floating rotor kits for our cars, which should be MUCH more attractive than $2k a set.

Giro Disc already makes them. About $1200 a pair and they're quality. Only thing is you need 18" to clear the caliper.

PFC also makes a direct drop-in 2-piece rotors for approx. $750 a pair which I have, they will be on the car this summer.

[Pat]

Originally Posted by ekam

Giro Disc already makes them. About $1200 a pair and they're quality. Only thing is you need 18" to clear the caliper.

PFC also makes a direct drop-in 2-piece rotors for approx. $750 a pair which I have, they will be on the car this summer.

I've had my eye on the Performance Friction rotors. That may be a good options for me. Any feedback on them? What pads are you using and what kind of track time, if any, do you see?

Cloudsurfer, I'd love to talk with your buddy that's making rotors. Please keep me updated with any info you have. TIA!

[ekam]

I like the PF rotors since they're only dimpled which is way less likely to crack than cross-drilled rotors. I only found out after I received them that their hats are not made of aluminum due to lack of strength & restriction in size. I had them coated since they're not coated (bad for winter) as well.

I'll be doing some track with them on stock pads, and provide some feedback.

[Pat]

Originally Posted by ekam

I like the PF rotors since they're only dimpled which is way less likely to crack than cross-drilled rotors. I only found out after I received them that their hats are not made of aluminum due to lack of strength & restriction in size. I had them coated since they're not coated (bad for winter) as well.

I'll be doing some track with them on stock pads, and provide some feedback.

Great. Thanks, ekam.
I just got off the phone with PF. They said the shipping weight for one of their Boxster S rotors is 22 pounds. The weight of the rotor itself is 18 pounds. I think that four pound difference is the hat, hardware and packaging. For reference, shipping weight of the Zimmerman rotor is 27 pounds.

Losing about six pounds per corner with PF rotors and about nine pounds per corner with OZ Alleggeritas would make a BIG difference.

Whatever rotors I do go with will be used year-round in CO. Can you tell me more about how and why you treated the hats? I would only use the PF rotors if the hats will last many years.

[ekam]

I had them nickel and zinc plated. See link below for the various processes.

http://activemetalfinishing.com/processes/

[Cloudsurfer]

Originally Posted by ekam

Giro Disc already makes them. About $1200 a pair and they're quality. Only thing is you need 18" to clear the caliper.

PFC also makes a direct drop-in 2-piece rotors for approx. $750 a pair which I have, they will be on the car this summer.

I'm well aware of the GiroDisc, and think they're great, but certainly pricey. I am also aware that the PFC rotors are not aluminum hatted, so I'm not sure that you get a significant weight reduction by using them.

My friend (who has a full CNC machine shop) is talking about designing aluminum hatted floating rotors, at an end user price point much less than $1200 a pair.

[Pat]

Cloudsurfer, did you read my post. The PF rotors save about six pounds per corner. That is absolutely significant.
That said, I'd love to hear what your buddy comes up with.

[Cartel]

Originally Posted by Cloudsurfer

I'm well aware of the GiroDisc, and think they're great, but certainly pricey. I am also aware that the PFC rotors are not aluminum hatted, so I'm not sure that you get a significant weight reduction by using them.

My friend (who has a full CNC machine shop) is talking about designing aluminum hatted floating rotors, at an end user price point much less than $1200 a pair.

It appears by the end of next week I will be taking this route if all works out well. Wish me luck!

[Cartel]

Originally Posted by Cartel

It appears by the end of next week I will be taking this route if all works out well. Wish me luck!

Disregard. GiroDisc only offers their rotors for the front and not the rear fitments. I decided not to continue forth in ordering the fronts as I thought it would ultimately look silly in utilizing rotors that in which do not match on all corners. Sorry for the delayed response, but I was notified at the end of May prior to departing to Mexico for a few weeks. Unfortunately, a set of Brembo Gran Turismo's fall out of my budget..

[ekam]

Originally Posted by Cartel

Disregard. GiroDisc only offers their rotors for the front and not the rear fitments. I decided not to continue forth in ordering the fronts as I thought it would ultimately look silly in utilizing rotors that in which do not match on all corners. Sorry for the delayed response, but I was notified at the end of May prior to departing to Mexico for a few weeks. Unfortunately, a set of Brembo Gran Turismo's fall out of my budget..

Are you sure? It's listed on their online store and I've seen pictures of it mounted on Cayman S.

http://www.girodisc.com/catalog/index.php?cPath=31_60_343&osCsid=5cc7bdc6ae8dd4902cb8a9738ed12731