Brake Pads and Rotors for Street/Track use

Discussion in 'Suspension, Brakes & Chassis' started by qdog9, Jul 5, 2018.

  1. qdog9

    qdog9 Active Member

    Vehicle(s):
    2016 Mustang Ecoboost Premium PP
    Joined:
    Aug 8, 2017
    Location:
    Charlotte, NC
    Posts:
    27
    Likes Received:
    11
    0   0   0
    I have been taking my Mustang Ecoboost on the track and after racing at VIR, I ended up scoring my rotors. What would the best rotor/brake pad setup be for some track use on a car that is normally a daily driver without risk of ruining another set of rotors.
    Thanks
     
  2. BmacIL

    BmacIL Enginerd

    Vehicle(s):
    2015 Guard GT Base, M/T
    Joined:
    Sep 21, 2014
    Location:
    Naperville, IL
    Posts:
    15,025
    Likes Received:
    8,802
    Garage Profiles:
    1
    Rating:
    100%
    3   0   0
    Honestly because of the rotor cooling issues these brakes (non-Brembo) have because of the flipped vane inlet (on the outside vs. inside), upgrading to the Brembos is the best thing to do.
     
    wmfateam and JohnD like this.
  3. BlownGP

    BlownGP Well-Known Member

    First Name:
    Steven
    Vehicle(s):
    Pontiac, Ford, Dodge
    Joined:
    Jan 25, 2016
    Location:
    Houston/Baton Rouge
    Posts:
    833
    Likes Received:
    180
    0   0   0
    #3 BlownGP, Jul 19, 2018
    Last edited: Jul 20, 2018
    So, are you saying they designed the stock rotors wrong?

    Are all the aftermarket rotors made wrong too? Like brakemotive, ebay stuff etc.?
     
  4. morgande

    morgande Well-Known Member

    Vehicle(s):
    2017 Mustang GT PP Ingot Silver | 2013 Ford F150
    Joined:
    Oct 24, 2016
    Location:
    East Coast
    Posts:
    192
    Likes Received:
    73
    0   0   0
    [email protected] likes this.
  5. SVO MkII

    SVO MkII Well-Known Member

    Vehicle(s):
    2018 Ecoboost, 6sp, PP
    Joined:
    Mar 1, 2018
    Location:
    IL
    Posts:
    325
    Likes Received:
    118
    0   0   0
    Yes, the stock GT/EB PP front rotors are designed "wrong" for track use. I have never seen another brake rotor designed with cooling vanes on the outside of the hub. This makes it impossible to get cooling air directed to the center of the rotor so that it can flow out through the vanes and cool the rotor. To be fair, this rotor design will not be a problem for street driving, or even autocross. But if you go to a track, and start doing repeated hard braking from in excess of 100 mph, you will cook the front brakes. I know this from experience, having just done this at Road America in May. Brake pedal went to the floor after 6 laps, boiled fluid. Yes, racing fluid will help, as will track pads. But as you push the car harder, you will need to get cooling air to the rotors. The stock 4 piston rotors are worthless in this regard.
     
    BlownGP likes this.
  6. BlownGP

    BlownGP Well-Known Member

    First Name:
    Steven
    Vehicle(s):
    Pontiac, Ford, Dodge
    Joined:
    Jan 25, 2016
    Location:
    Houston/Baton Rouge
    Posts:
    833
    Likes Received:
    180
    0   0   0
    That's pretty crazy that they designed them that way. Wonder if the PP Brembo rotors are the same way?
     
  7. Norm Peterson

    Norm Peterson corner barstool sitter

    First Name:
    Norm
    Vehicle(s):
    '08 GT #85, '19 WRX, '01 20AE
    Joined:
    Jul 22, 2013
    Location:
    On a corner barstool not too far from I-95
    Posts:
    6,596
    Likes Received:
    2,726
    0   0   0
    PP and GT350 rotors are done up the right way.

    From a Vorshlag post elsewhere (earlier this year) . . . "Of course the S550 15" PP1 brakes (below) and 15.5" Shelby brakes don't have ass-backwards venting and they can be cooled for proper track use..."

    B61G2104-L.jpg


    Norm
     
    BlownGP likes this.
  8. SVO MkII

    SVO MkII Well-Known Member

    Vehicle(s):
    2018 Ecoboost, 6sp, PP
    Joined:
    Mar 1, 2018
    Location:
    IL
    Posts:
    325
    Likes Received:
    118
    0   0   0
    Brembo 6.jpeg Here is a pic of the GT PP1 brakes from the outside (as installed on my car). No external venting.
     
  9. BlownGP

    BlownGP Well-Known Member

    First Name:
    Steven
    Vehicle(s):
    Pontiac, Ford, Dodge
    Joined:
    Jan 25, 2016
    Location:
    Houston/Baton Rouge
    Posts:
    833
    Likes Received:
    180
    0   0   0
    Ok, I see
    I haven't paid much attention to the stock brakes but you are saying with the rotors being open on the bottom. It prevents the rotors from cooling properly?

    $.jpg
     
  10. BmacIL

    BmacIL Enginerd

    Vehicle(s):
    2015 Guard GT Base, M/T
    Joined:
    Sep 21, 2014
    Location:
    Naperville, IL
    Posts:
    15,025
    Likes Received:
    8,802
    Garage Profiles:
    1
    Rating:
    100%
    3   0   0
    It's because they draw air from the outside face through the rotor, rather than the inside face where cool air can be ducted. You cannot see the vent inlets of the PP rotors when it is installed on the hub.
     
    BlownGP likes this.
  11. Norm Peterson

    Norm Peterson corner barstool sitter

    First Name:
    Norm
    Vehicle(s):
    '08 GT #85, '19 WRX, '01 20AE
    Joined:
    Jul 22, 2013
    Location:
    On a corner barstool not too far from I-95
    Posts:
    6,596
    Likes Received:
    2,726
    0   0   0
    Correct on not cooling properly. But the airflow goes outward from the center, not inward from the outer diameter. Basically, the vanes between the faces of the rotors turn the rotors into centrifugal air pumps, flinging the air molecules radially outward . . .

    When the center inlet is on the wheel side, you're not going to be getting large mass air flow (which is what it takes to cool down a rotor heated by hard braking of a heavy car). No way are you going to be able to run any cooling ducts to give these backwards-designed rotors the help they need even more than normal rotor designs.


    Norm
     
    BlownGP likes this.
  12. BlownGP

    BlownGP Well-Known Member

    First Name:
    Steven
    Vehicle(s):
    Pontiac, Ford, Dodge
    Joined:
    Jan 25, 2016
    Location:
    Houston/Baton Rouge
    Posts:
    833
    Likes Received:
    180
    0   0   0
    ahh I see. That makes sense. Really crazy they would design them light that.
    Wonder if the aftermarket rotors are the same.

    Thinking more about the PP upgrade now. lol

    Thanks for all the info guys,
     
  13. BmacIL

    BmacIL Enginerd

    Vehicle(s):
    2015 Guard GT Base, M/T
    Joined:
    Sep 21, 2014
    Location:
    Naperville, IL
    Posts:
    15,025
    Likes Received:
    8,802
    Garage Profiles:
    1
    Rating:
    100%
    3   0   0
    All the aftermarket one piece rotors are the same. I've been talking with one company about developing one with the inlet on the inside though. Their early analysis showed some promise.
     
  14. vteckiller2000

    vteckiller2000 Active Member

    First Name:
    Cameron
    Vehicle(s):
    2018 Mustang EB PP
    Joined:
    Aug 7, 2018
    Location:
    Cedar Rapids
    Posts:
    40
    Likes Received:
    7
    0   0   0
    Anything further on this? I just got an 18 EB PP and would rather not spend $1500 on the baer two piece rotors or swap most of my braking system for the brembo stuff.
     
  15. BmacIL

    BmacIL Enginerd

    Vehicle(s):
    2015 Guard GT Base, M/T
    Joined:
    Sep 21, 2014
    Location:
    Naperville, IL
    Posts:
    15,025
    Likes Received:
    8,802
    Garage Profiles:
    1
    Rating:
    100%
    3   0   0
    They're working on it. Nothing concrete for timing yet, but it is being developed.
     
Loading...

Share This Page