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Audi r8/rs, gt350 brake calipers

 
  #1  
Old 06-23-2016, 12:44 PM
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Audi r8/rs, gt350 brake calipers

Been thinking a looking around for calipers and man are they hard to find at a decent price for 997tt, gt3 or pccb calipers. Running 350mm rotors now with 996tt calipers but would like to go to a 380/350 setup for the track.

Well I noticed r8 calipers are somehow cheaper and easy get your hand on. Mounting is similar to the porsche 380mm style rotors so an adapter bracket would have to be made but that is very easy to do. No idea what the piston sizes are on them though compared to the porsche 6 pot 380 calipers.

John I figure you'll probabaly have some insight on this. Worth taking the leap and trying maybe?

Edit: just found that the new mustang gt350 calipers use the same design and are made for 380mm rotor. Brand new they are 650 bucks for a front pair. I know not all brembo calipers are made equal though.


 

Last edited by flewis763; 06-23-2016 at 01:14 PM.
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Old 06-23-2016, 05:32 PM
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The 380GT3 calipers have 28/30/32 pistons.
 
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Old 06-23-2016, 06:54 PM
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Originally Posted by pwdrhound View Post
The 380GT3 calipers have 28/30/32 pistons.
I'll see if I csn find specs on the gt350 calipers because if they are similar, for 650 new you can't hardly say no.
Id probably make the bracket kits to for others if there was interest.
 
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Old 06-23-2016, 07:04 PM
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In for results! Like the look of the Porsche calipers but the prices aren't low! Suspect many will be happiest with 350mm but a nice 380mm alternative might be nice.
 
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Old 06-23-2016, 07:20 PM
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If you put 380s on the front in conjunction with 350 rears using the smallish 996 rear calipers, you braking will degrade as the bias will be made worse. You must go with the larger rear 997 calipers if upping to 380 fronts. I tested this years ago. It sucked.
 
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Old 06-23-2016, 07:52 PM
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Originally Posted by BLKMGK View Post
In for results! Like the look of the Porsche calipers but the prices aren't low! Suspect many will be happiest with 350mm but a nice 380mm alternative might be nice.
I do to but actually the gt350 calipers in red match the 997 rear is looks quite a bit.
Also being that they are about 1/3 the price as the porsche ones that's a pretty good deal.



Originally Posted by pwdrhound View Post
If you put 380s on the front in conjunction with 350 rears using the smallish 996 rear calipers, you braking will degrade as the bias will be made worse. You must go with the larger rear 997 calipers if upping to 380 fronts. I tested this years ago. It sucked.
O for sure. 997 rear with these gt350 fronts I think would be a good deal. Would even consider going to a 380mm rear with a spacer on the 997 turbo caliper, don't know if that would shift the bias to much to the rear though.

 
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Old 12-26-2018, 09:51 AM
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Hi;

Was there an interest in doing this? I would certainly be interested.

Regards,
Ron
 
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Old 12-26-2018, 09:53 AM
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Was there an interest in doing this? I would certainly be interested. Did anyone try to get the GT350 calipers on a 997 non s?

Regards,
Ron
 
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Old 12-26-2018, 11:22 AM
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Originally Posted by pwdrhound View Post
If you put 380s on the front in conjunction with 350 rears using the smallish 996 rear calipers, you braking will degrade as the bias will be made worse. You must go with the larger rear 997 calipers if upping to 380 fronts. I tested this years ago. It sucked.
So true. I run now F&R calipers with 380/380 mm discs from 991 GT3. That's most rear biased set one can get with OEM calipers. Works like charm, the best I've had on my car. See piston diameter comparison (in millimeter) below:

997 GT2/3 PCCB F: 32-30-28 / R: 34-34
991 GT3 F: 30-30-30 / R: 34-34

Still, IMO 350/350 disc option with above mentioned bias would be more or less optimal choice for reduced weight track car...

EDIT: I did some googling. Racing Brake sells caliper rebuild kit with pistons: Caliper pistons are 34/36/38 x 32mm height
I would not recommend those calipers to any rear engined Porsche, pistons are larger than in any OEM Porsche caliper.
Again RB also sells rebuild kit for R8/RS4/RS5/Gallardo 8 piston calipers. Pistons are 2x 28mm & 2x 32mm. With a guessimate there's also lot more piston area than in Porsche's calipers. Math later.
 

Last edited by pete95zhn; 12-26-2018 at 11:42 AM.
  #10  
Old 02-03-2019, 04:36 PM
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I heard Jeep Trackhawk Calipers are also a good choice. 6 piston.
 
 
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