COTA Track Day Issues
#1
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I was prepared for a two-day track event at Circuit of the Americas this past weekend but ran into some issues with the 2017 SVR. It recently had the following work done / installations:
A racing shop on track (who had performed the work above) bled the brakes again and looked at the pads, which were completely glazed over. I bed the brakes in the morning of the event, so I could very well have done that improperly. It was also pretty hot out (95F), but that said, I've been on that track with OEM rotors and new pads without much issue (just a little brake fade).
The shop replaced the Porterfield R4-S with the used OEM pads that had previously been taken off; however, they were pretty worn on the front (1/8th left). I was able to get back on track for about 4 / 5 laps before a warning popped up on the center dash that said BRAKES OVERHEATED.
We tried to cool them via a 1.5 lap cool down. The warning finally went off about 5+ minutes of stationary running back in the pit garages.
A couple of questions:
1. For anyone that regularly tracks their F-Type, ever experienced any of the issues above?
2. For anyone that regularly tracks their F-Type, any suggestions on pads or thoughts on why I glazed the R4-S so quickly?
3. For anyone that regularly tracks their F-Type, general suggestions on how to keep the car on track given the heat + speed + wear that a track like COTA can cause?
Really like having something different than the plethora of GT3 RS / Cayman GT4 / Corvette's on the track, but certainly didn't like only being able to run 4 laps over the 2-day period!
- Brake fluid flush & Motul RBF 660 replaced
- StopTech Slotted Sport Brake Rotors
- Porterfield R4-S Brake Pads (AP1750 / AP1753)
- Laser alignment & track inspection
A racing shop on track (who had performed the work above) bled the brakes again and looked at the pads, which were completely glazed over. I bed the brakes in the morning of the event, so I could very well have done that improperly. It was also pretty hot out (95F), but that said, I've been on that track with OEM rotors and new pads without much issue (just a little brake fade).
The shop replaced the Porterfield R4-S with the used OEM pads that had previously been taken off; however, they were pretty worn on the front (1/8th left). I was able to get back on track for about 4 / 5 laps before a warning popped up on the center dash that said BRAKES OVERHEATED.
We tried to cool them via a 1.5 lap cool down. The warning finally went off about 5+ minutes of stationary running back in the pit garages.
A couple of questions:
1. For anyone that regularly tracks their F-Type, ever experienced any of the issues above?
2. For anyone that regularly tracks their F-Type, any suggestions on pads or thoughts on why I glazed the R4-S so quickly?
3. For anyone that regularly tracks their F-Type, general suggestions on how to keep the car on track given the heat + speed + wear that a track like COTA can cause?
Really like having something different than the plethora of GT3 RS / Cayman GT4 / Corvette's on the track, but certainly didn't like only being able to run 4 laps over the 2-day period!
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SinF (06-29-2020)
#3
#4
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My thoughts were if the OEM pad handled the track last time decently well, the hybrid R4-S would be something that could provide less fade / more bite during the track, but not need to be swapped out for street afterward. I was apparently wrong.
Last edited by jaglag; 06-29-2020 at 03:18 PM.
#5
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#6
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oem pads are very very good for the track. if you want to have a proper track pad you should send your oem used pads to a brake company to template and make you a real track pad so you have no issues in the future, it will be more expensive than oem but it will be better than anything you can ever get.
#7
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Yep, but last I checked (about two weeks ago) they don't make them for the F-Type.
That said I seem to recall Stuart from VAP posting somewhere that he can get them for the F-Type via "special order".
Correction - they DO make the R4 "race" pad for the F-Type, for all steel brakes except the base 355 mm front brakes, see here: https://www.lpiracing.com/showsearch...r=2016&submit=
Same model numbers as the R4-S, AP 1750 front and AP 1753 rear, just R4 instead of R4-S.
So maybe the OP could try a set of these and report back?
But I'm with Lance here, I would first swap out the StopTech rotors for OEM rotors, maybe put the original rotors back on if they are still serviceable.
That said I seem to recall Stuart from VAP posting somewhere that he can get them for the F-Type via "special order".
Correction - they DO make the R4 "race" pad for the F-Type, for all steel brakes except the base 355 mm front brakes, see here: https://www.lpiracing.com/showsearch...r=2016&submit=
Same model numbers as the R4-S, AP 1750 front and AP 1753 rear, just R4 instead of R4-S.
So maybe the OP could try a set of these and report back?
But I'm with Lance here, I would first swap out the StopTech rotors for OEM rotors, maybe put the original rotors back on if they are still serviceable.
Last edited by OzXFR; 06-29-2020 at 06:21 PM.
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#8
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I suspect the issue was not with the pads, but rather with the rotors. Note, even the OEM pads overheated quickly which does not normally happen with the standard set up. The stop tech design may not be nearly as good as the OEM rotors for dissipating heat.
Last edited by Unhingd; 06-29-2020 at 05:46 PM.
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SinF (06-29-2020)
#9
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Actually that makes a lot of sense and could very well be given I had run this track + summer temp previously with OEM rotors + pads without too many issues. I would have thought though that the StopTech Sport Slotted would have been as good if not better than the OEM rotors with the dissipation of heat.
I'll chat with the racing garage that worked on the car for their input. Anyone have suggestions on the forum for what might work best? I was originally looking for weight savings + heat dissipation when going with non-OEMs. I don't really care about looks.
I'll chat with the racing garage that worked on the car for their input. Anyone have suggestions on the forum for what might work best? I was originally looking for weight savings + heat dissipation when going with non-OEMs. I don't really care about looks.
#10
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Actually that makes a lot of sense and could very well be given I had run this track + summer temp previously with OEM rotors + pads without too many issues. I would have thought though that the StopTech Sport Slotted would have been as good if not better than the OEM rotors with the dissipation of heat.
I'll chat with the racing garage that worked on the car for their input. Anyone have suggestions on the forum for what might work best? I was originally looking for weight savings + heat dissipation when going with non-OEMs. I don't really care about looks.
I'll chat with the racing garage that worked on the car for their input. Anyone have suggestions on the forum for what might work best? I was originally looking for weight savings + heat dissipation when going with non-OEMs. I don't really care about looks.
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JacksonvilleJag (06-30-2020)
#11
#12
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Seems all these upgrades got you worse off. Never experienced any issues with my 100% stock large caliper setup, 100% stock trashcan lids disks and running OEM stock pads. All of this works, lasts, and I yet to overheat it even once (with V6S and a manual gearbox doing engine braking). OEM setup is hard to improve on.
As Unhinged mentioned, your rotors probably largest culprit.
Also, are you doing anything crazy like excessively trail braking (i.e. using engine against brakes) ?
As Unhinged mentioned, your rotors probably largest culprit.
Also, are you doing anything crazy like excessively trail braking (i.e. using engine against brakes) ?
Last edited by SinF; 06-29-2020 at 10:12 PM.
#13
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I'm trail braking in almost every corner, but not left-foot braking / overlapping throttle (I'm tall and can't get my leg in a proper position without hitting the steering wheel).
So let's say you were wanting to track this car more than not, what would have installed? Back to OEM or something different? Anything other suggestions outside of rotor pads?
So let's say you were wanting to track this car more than not, what would have installed? Back to OEM or something different? Anything other suggestions outside of rotor pads?
#14
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I'm trail braking in almost every corner, but not left-foot braking / overlapping throttle (I'm tall and can't get my leg in a proper position without hitting the steering wheel).
So let's say you were wanting to track this car more than not, what would have installed? Back to OEM or something different? Anything other suggestions outside of rotor pads?
So let's say you were wanting to track this car more than not, what would have installed? Back to OEM or something different? Anything other suggestions outside of rotor pads?
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#15
#16
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Contact Wortec directly via email. There might be a vendor in the US, but Wortec can point you in the right direction. As far as my other mods you can see that in my signature that shows up on postings in the forum’s full website.
#17
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My immediate suggestion for would be
1. Buy new pads porterfield R4 or R4e or race compound and turn those rotors
2. titanium pad shims, it'll help with heat transfer
3. drive without stability control if you aren't already
4. are the svr rotors one piece? two piece rotor will help with heat girodisc/racing brake/etc
5. still have heat issues? Enlarge the factory ducting?
6. don't track in the summer? lol.
Will you be at Edge Addicts night event or NASA? i'll come say hi if i can make it.
#18
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Does seem strange that they overheated so quickly. Are you sure there isn't a caliper issue? Given various adjustments, bleeding, pad changes etc is it possible that you have a sticking / faulty caliper. That would over heat them fast...
Let us know what you end up doing and how it performs next time.
Let us know what you end up doing and how it performs next time.
#19
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#20
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Honestly? I would have installed a lighter car. F-type is more than adequate for casual track use, but if you intend to drive it 11/10 all the time, it is way too heavy and you will hit mechanical limits to what is possible with the current tire and braking technology.
Last edited by SinF; 07-02-2020 at 09:34 AM.