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RX8 Track caliper temperature with Porterfield Brake

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Old 09-10-2019, 09:12 PM
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RX8 Track caliper temperature with Porterfield Brake

With 20min of Track session
Here are my Caliper temperature with potorfield R4
F/R.
And Endless RP650 brake fluid
No Cooing duct , stock rotor
Overall I think , Rx8 can get away with Only brake pad upgrade for track day use


#endlessbrake
#potorfieldbrake
Attached Thumbnails RX8 Track caliper temperature with Porterfield Brake-photo675.jpg   RX8 Track caliper temperature with Porterfield Brake-photo706.jpg   RX8 Track caliper temperature with Porterfield Brake-photo611.jpg  

Last edited by Diyman25; 09-10-2019 at 09:54 PM.
Old 09-10-2019, 09:19 PM
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Yep. You can outbrake many comparable cars with stock equipment + pads.
Old 09-10-2019, 09:53 PM
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Originally Posted by Loki
Yep. You can outbrake many comparable cars with stock equipment + pads.
Rx8 EBD is pretty advance ,
Old 09-10-2019, 11:36 PM
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I'm not sure EBD is still active if DSC is turned off, and you'll want DSC off once you feel comfortable on track. It's just a light car with large rotors and good balance.

Also this isn't instagram, the hashtags don't do anything here
Old 09-11-2019, 12:07 AM
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Originally Posted by Loki
I'm not sure EBD is still active if DSC is turned off, and you'll want DSC off once you feel comfortable on track. It's just a light car with large rotors and good balance.

Also this isn't instagram, the hashtags don't do anything here
With DSC complete OFF, we still get ABS so
EBD will be still active ~
With Low TQ and long wheelbase, Rx8 is very easy car to drive at limit, i am so glad DSC can turn complete off !!! I turn it off at raining track too
Old 09-11-2019, 01:20 PM
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I believe EBD is always active and not just under ABS
Old 09-17-2019, 07:06 AM
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the EBD is probably calibrated for street tires and street brake pads, does running race tires and race pads effect how the EBD works.
Old 09-17-2019, 09:00 AM
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Originally Posted by trackjunkie
the EBD is probably calibrated for street tires and street brake pads, does running race tires and race pads effect how the EBD works.
True
But still mile head then tradional mechanical one
Like Rx7 or Caterham that I race~
Old 09-17-2019, 10:30 AM
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It’s just a programming derivative of ABS. It’s all about the rate of rotational wheel speed change.
Old 09-18-2019, 12:33 PM
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I would say caliper temperature is not a good indicator, you should have that sticker placed on the back of the brake pad. I don't think there is a good place to put it on the rotor - brake temperature paint is best for those.

Last time I was the the track I saw ~650F on my front rotors (with my front brake cooling ducts mod) after I got off the track and back into paddock area. I used infrared temp gun, not the most accurate but close enough.

Rotors/pads get pretty hot:

Old 09-21-2019, 11:19 AM
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Originally Posted by Nadrealista
I would say caliper temperature is not a good indicator, you should have that sticker placed on the back of the brake pad. I don't think there is a good place to put it on the rotor - brake temperature paint is best for those.

Last time I was the the track I saw ~650F on my front rotors (with my front brake cooling ducts mod) after I got off the track and back into paddock area. I used infrared temp gun, not the most accurate but close enough.

Rotors/pads get pretty hot:

The reason for caliper temperature sticker is behind 200c the seal of brake piston will gone bad
And the Alloy caliper will deform

rotor temperature will be higher then
Caliper , but I think caliper temperature is a bit more important , u never want to deform ur caliper
Old 09-21-2019, 11:51 AM
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You're not going to deform the caliper at 200C...

Rotor temperature helps you determine your next choice of brake pad and brake rotor, and brake bias if you have that level of control.
Caliper temp helps you determine if you're risking seal failure.
Old 09-21-2019, 05:54 PM
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Originally Posted by Loki
You're not going to deform the caliper at 200C...

Rotor temperature helps you determine your next choice of brake pad and brake rotor, and brake bias if you have that level of control.
Caliper temp helps you determine if you're risking seal failure.
Just some example

https://link.springer.com/article/10.1007/BF00648157
Old 09-21-2019, 08:31 PM
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Except you’re still on the OE calipers

and they call me pedantic ...
Old 09-21-2019, 08:33 PM
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Originally Posted by TeamRX8
Except you’re still on the OE calipers

and they call me pedantic ...
Of course
Too many project on hand
So get da stay in budget in Rx8~
Old 09-21-2019, 08:35 PM
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I can appreciate that ...
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