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Old 10-28-2017, 08:00 PM   #1
Doommachine_
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track cooked my brakes. pad only an option?

so the stock brakes on my 2011 GTI totally went dead at the track today. there is 2 heavy braking zones on Streets of Willow CCW and from braking hard in those the fronts got too hot and overheated the pads and I also cooked my fluid and the pedal went all soggy despite me flushing and putting in DOT4 last night. I know some of the issue is just the pad being junk street pads but I am wondering if anyone has feedback as to if just a spare set of rotors and carbotech pads will be enough for track use. I had considered doing porsche caliper upgrade but am always careful with my money and would rather just swap pads and rotors for track days if that will do the trick
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Old 10-29-2017, 12:32 PM   #2
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Originally Posted by Doommachine_ View Post
so the stock brakes on my 2011 GTI totally went dead at the track today. there is 2 heavy braking zones on Streets of Willow CCW and from braking hard in those the fronts got too hot and overheated the pads and I also cooked my fluid and the pedal went all soggy despite me flushing and putting in DOT4 last night. I know some of the issue is just the pad being junk street pads but I am wondering if anyone has feedback as to if just a spare set of rotors and carbotech pads will be enough for track use. I had considered doing porsche caliper upgrade but am always careful with my money and would rather just swap pads and rotors for track days if that will do the trick
You can get away with a nice set of track pads. Carbotech xp10 do well. Fluid is the most important. I've ran all sorts of race fluid, Castrol srf is by far the best I've used. I had issues with rbf600 and 660 with it cooking the fluid. Srf has performed amazing. It's a bit expensive though but worth it.

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Old 03-06-2018, 05:11 PM   #3
dub*man
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Use Endless RB650 Fluid and never look back. Many OEM racing teams switched from Castrol SRF to Endless RB650
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Old 03-06-2018, 06:28 PM   #4
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Castrol SRF +1
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Old 05-14-2018, 01:20 PM   #5
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Castrol SRF comes in a 1 Liter bottle. Is this enough for a complete flush?
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Old 05-14-2018, 01:43 PM   #6
DASVDUB
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Originally Posted by jay745 View Post
You can get away with a nice set of track pads. Carbotech xp10 do well. Fluid is the most important. I've ran all sorts of race fluid, Castrol srf is by far the best I've used. I had issues with rbf600 and 660 with it cooking the fluid. Srf has performed amazing. It's a bit expensive though but worth it.

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This. the stoptech stuff that tirerack sells is no good as well.

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Castrol SRF +1
+2

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Castrol SRF comes in a 1 Liter bottle. Is this enough for a complete flush?
yup.
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Old 05-14-2018, 01:59 PM   #7
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FWIW - A couple of years ago I cooked my stock brakes coming out of the main straight at Summit Point (~.75 straight away, hitting ~100 MPH) braking hard for a sharp right turn (Turn 1). I upgraded to Hawk HPS pads on stock rotors w/ ATE Typ 200 (DOT 4) brake fluid and the new setup has never failed me through multiple HPDE/TNiA events since.
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Old 05-14-2018, 02:50 PM   #8
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Originally Posted by DASVDUB View Post
This. the stoptech stuff that tirerack sells is no good as well.
Stoptech Sport (309 series) pads are more than capable on track. With pad material rated up to 1300 F with great cold/hot initial bite, I've had great experience with them on tracks like VIR, NCCAR, and Dominion. That said, for severe braking tracks like Road America, etc I would step up to a dedicated race pad like Carbotech, PFC, Ferodo, etc.
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Old 05-14-2018, 02:53 PM   #9
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Originally Posted by Ronnie_B View Post
Stoptech Sport (309 series) pads are more than capable on track. With pad material rated up to 1300 F with great cold/hot initial bite, I've had great experience with them on tracks like VIR, NCCAR, and Dominion. That said, for severe braking tracks like Road America, etc I would step up to a dedicated race pad like Carbotech, PFC, Ferodo, etc.
i was talking about the fluid that stoptech sells.
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Old 05-14-2018, 03:06 PM   #10
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i was talking about the fluid that stoptech sells.
Ooohhh, my bad. I've ran the STR-600 fluid years ago but switched over to Motul RBF600. The published specs showed dry/wet boiling points similar to RBF600, but I never really got to verify that.
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Old 05-14-2018, 07:42 PM   #11
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I've used RBF600 with EBC Yellow pads on stock rotors on both cars and never encountered any issues. The only issue I had with the yellows was that they slopped around a little in the R when they wore down a bit. Switched to BBK since then but still run the yellows on the GTI.
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Old 05-15-2018, 02:10 PM   #12
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+1 for ATE fluid...I ran hard and braking from ~150mph at VIR was no problem.
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