Girodisc upgrade on 991 GTS with Centerlocks
04-17-2017, 10:47 PM
#33
04-18-2017, 08:37 AM
#34
Instructor
Thread Starter
Nice! Mine are still holding up well and I agree with all of your observations on their performance. Haven't made it to the track yet as we just closed on a new house last Friday and have been trying to get life back in order. Here are some non related garage pics. It was the first room put back together!
06-07-2017, 06:24 PM
#38
Banned
Just purchased the Girodisc rotors from Clark and caliper studs from Tarett. I will put my Pagid Yellow pads on for track days. Still looking for some good street pads that are the right size for the larger rotors.
Clark was an unbelievable resource and the price was right. I will be installing these myself when they arrive and look forward to sharing my thoughts.
Thanks to Jason for paving the way!
Clark was an unbelievable resource and the price was right. I will be installing these myself when they arrive and look forward to sharing my thoughts.
Thanks to Jason for paving the way!
06-07-2017, 07:49 PM
#39
Instructor
Thread Starter
Just purchased the Girodisc rotors from Clark and caliper studs from Tarett. I will put my Pagid Yellow pads on for track days. Still looking for some good street pads that are the right size for the larger rotors.
Clark was an unbelievable resource and the price was right. I will be installing these myself when they arrive and look forward to sharing my thoughts.
Thanks to Jason for paving the way!
Clark was an unbelievable resource and the price was right. I will be installing these myself when they arrive and look forward to sharing my thoughts.
Thanks to Jason for paving the way!
06-08-2017, 11:12 AM
#40
NA430GTS, just fyi, you also need the stud sleeves made by Tarrett for the rear caliper studs only. I think they are $12.95 each. Not necessary for the front.
BTW, I use stock GT3 front pads and stock 991 pads when not tracking and obivously they work fine, but are expensive. The only reason I do this is on the front I don't want any smaller swept area on my front rotors than what my GT3 sized Ferrodo race pads provide as I have some fear (probably unfoundaded) that doing so would create two different sets of grooves on the front rotors. If that is unfounded or Jbgill6535 tells us that its not a problem when he gets to the track, I too will go to the Centric pads Jbgill6535 bought on RockAuto for significantly less than OEM (although street driving my new OEM pads will probably last a long time).
For what it is worth, since I swap back and forth between race pads and street pads, I simply cut the brake wear sensor wires and tied the two wires together and zip tied them to the brake lines in order to forgoe buying and replacing the brake wear sensors with each swap. Works perfectly.
Also, I ran this Giro/Ferrodo/Pagid set up very hard over 3 days at Circuit of the Americas in Austin a few weeks ago and the pads are still over 50% and the rotors look great (although getting some hairline cracks in the front rotors). COTA is ntoriously rough on brakes and I'm happy to report that these held up amazingly. Also, ZERO fade over 25 minute runs. Worth every single penny IMO.
For fun, here's a one of my run sessions at COTA:
BTW, I use stock GT3 front pads and stock 991 pads when not tracking and obivously they work fine, but are expensive. The only reason I do this is on the front I don't want any smaller swept area on my front rotors than what my GT3 sized Ferrodo race pads provide as I have some fear (probably unfoundaded) that doing so would create two different sets of grooves on the front rotors. If that is unfounded or Jbgill6535 tells us that its not a problem when he gets to the track, I too will go to the Centric pads Jbgill6535 bought on RockAuto for significantly less than OEM (although street driving my new OEM pads will probably last a long time).
For what it is worth, since I swap back and forth between race pads and street pads, I simply cut the brake wear sensor wires and tied the two wires together and zip tied them to the brake lines in order to forgoe buying and replacing the brake wear sensors with each swap. Works perfectly.
Also, I ran this Giro/Ferrodo/Pagid set up very hard over 3 days at Circuit of the Americas in Austin a few weeks ago and the pads are still over 50% and the rotors look great (although getting some hairline cracks in the front rotors). COTA is ntoriously rough on brakes and I'm happy to report that these held up amazingly. Also, ZERO fade over 25 minute runs. Worth every single penny IMO.
For fun, here's a one of my run sessions at COTA:
06-08-2017, 06:40 PM
#41
Banned
Originally Posted by jplohg
NA430GTS, just fyi, you also need the stud sleeves made by Tarrett for the rear caliper studs only. I think they are $12.95 each. Not necessary for the front.
BTW, I use stock GT3 front pads and stock 991 pads when not tracking and obivously they work fine, but are expensive. The only reason I do this is on the front I don't want any smaller swept area on my front rotors than what my GT3 sized Ferrodo race pads provide as I have some fear (probably unfoundaded) that doing so would create two different sets of grooves on the front rotors. If that is unfounded or Jbgill6535 tells us that its not a problem when he gets to the track, I too will go to the Centric pads Jbgill6535 bought on RockAuto for significantly less than OEM (although street driving my new OEM pads will probably last a long time).
For what it is worth, since I swap back and forth between race pads and street pads, I simply cut the brake wear sensor wires and tied the two wires together and zip tied them to the brake lines in order to forgoe buying and replacing the brake wear sensors with each swap. Works perfectly.
Also, I ran this Giro/Ferrodo/Pagid set up very hard over 3 days at Circuit of the Americas in Austin a few weeks ago and the pads are still over 50% and the rotors look great (although getting some hairline cracks in the front rotors). COTA is ntoriously rough on brakes and I'm happy to report that these held up amazingly. Also, ZERO fade over 25 minute runs. Worth every single penny IMO.
For fun, here's a one of my run sessions at COTA:
BTW, I use stock GT3 front pads and stock 991 pads when not tracking and obivously they work fine, but are expensive. The only reason I do this is on the front I don't want any smaller swept area on my front rotors than what my GT3 sized Ferrodo race pads provide as I have some fear (probably unfoundaded) that doing so would create two different sets of grooves on the front rotors. If that is unfounded or Jbgill6535 tells us that its not a problem when he gets to the track, I too will go to the Centric pads Jbgill6535 bought on RockAuto for significantly less than OEM (although street driving my new OEM pads will probably last a long time).
For what it is worth, since I swap back and forth between race pads and street pads, I simply cut the brake wear sensor wires and tied the two wires together and zip tied them to the brake lines in order to forgoe buying and replacing the brake wear sensors with each swap. Works perfectly.
Also, I ran this Giro/Ferrodo/Pagid set up very hard over 3 days at Circuit of the Americas in Austin a few weeks ago and the pads are still over 50% and the rotors look great (although getting some hairline cracks in the front rotors). COTA is ntoriously rough on brakes and I'm happy to report that these held up amazingly. Also, ZERO fade over 25 minute runs. Worth every single penny IMO.
For fun, here's a one of my run sessions at COTA:
In a perfect world I would want a GT3 sized pad at a cheap price for street and use my pagids for track.
can anyone recommend one besides stock?
BTW sweet video - I've wanted to have the same capabilities. Do you have a parts list
06-08-2017, 07:52 PM
#43
Banned
Originally Posted by jplohg
Cool. What parts list are you looking for? My car set up? Video? Something else? Happy to share.
06-08-2017, 08:00 PM
#44
Burning Brakes
Cool lap video! Random question. What is that circular countdown thing that appears at the top right of the screen at Turn 12 after that white car finally pointed you by down that long, back straight?
NA430GTS, just fyi, you also need the stud sleeves made by Tarrett for the rear caliper studs only. I think they are $12.95 each. Not necessary for the front.
BTW, I use stock GT3 front pads and stock 991 pads when not tracking and obivously they work fine, but are expensive. The only reason I do this is on the front I don't want any smaller swept area on my front rotors than what my GT3 sized Ferrodo race pads provide as I have some fear (probably unfoundaded) that doing so would create two different sets of grooves on the front rotors. If that is unfounded or Jbgill6535 tells us that its not a problem when he gets to the track, I too will go to the Centric pads Jbgill6535 bought on RockAuto for significantly less than OEM (although street driving my new OEM pads will probably last a long time).
For what it is worth, since I swap back and forth between race pads and street pads, I simply cut the brake wear sensor wires and tied the two wires together and zip tied them to the brake lines in order to forgoe buying and replacing the brake wear sensors with each swap. Works perfectly.
Also, I ran this Giro/Ferrodo/Pagid set up very hard over 3 days at Circuit of the Americas in Austin a few weeks ago and the pads are still over 50% and the rotors look great (although getting some hairline cracks in the front rotors). COTA is ntoriously rough on brakes and I'm happy to report that these held up amazingly. Also, ZERO fade over 25 minute runs. Worth every single penny IMO.
For fun, here's a one of my run sessions at COTA:
https://youtu.be/8qrWqEkU6sQ
BTW, I use stock GT3 front pads and stock 991 pads when not tracking and obivously they work fine, but are expensive. The only reason I do this is on the front I don't want any smaller swept area on my front rotors than what my GT3 sized Ferrodo race pads provide as I have some fear (probably unfoundaded) that doing so would create two different sets of grooves on the front rotors. If that is unfounded or Jbgill6535 tells us that its not a problem when he gets to the track, I too will go to the Centric pads Jbgill6535 bought on RockAuto for significantly less than OEM (although street driving my new OEM pads will probably last a long time).
For what it is worth, since I swap back and forth between race pads and street pads, I simply cut the brake wear sensor wires and tied the two wires together and zip tied them to the brake lines in order to forgoe buying and replacing the brake wear sensors with each swap. Works perfectly.
Also, I ran this Giro/Ferrodo/Pagid set up very hard over 3 days at Circuit of the Americas in Austin a few weeks ago and the pads are still over 50% and the rotors look great (although getting some hairline cracks in the front rotors). COTA is ntoriously rough on brakes and I'm happy to report that these held up amazingly. Also, ZERO fade over 25 minute runs. Worth every single penny IMO.
For fun, here's a one of my run sessions at COTA:
https://youtu.be/8qrWqEkU6sQ
06-09-2017, 02:29 AM
#45
The video and lap timer set up I have is very simple. Use iPhone for camera and install Harry's Lap Timer app with RAM mount and GoPoint BTA1 oBD dongle. The app is about $30, the mount is about $50 and the OBD dongle is about $150. The OBD dongle plugs into your oOBD port and sends car info (speed, gear, throttle, g's) to the iPhone and app via Bluetooth. The count down serves a couple functions - on the first lap, it triggers the start of the lap and the following laps information and during each lap it uses pre measured sector points on the track to give you sector times.