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Thread: When to replace Stoptech rotors

  1. #11
    Senior Member Grass-Passer Casey_SS's Avatar
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    Yes, I'll be at TWS.
    2012 NASA-TX American Iron Champ
    AI #29

  2. #12
    Senior Member Carroll Shelby ShadowBolt's Avatar
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    Quote Originally Posted by dtanker65 View Post
    Thanks Casey. I have a friend with a Bondurant S95 car and he said the Stoptech's dropped seconds off of his lap times. Are you going to TWS?

    Dennis
    If that is true he had bad brakes in the first place. Stoptech' feel great but they will not take seconds off you lap times.

    JJ

  3. #13
    Quote Originally Posted by ShadowBolt View Post
    B

    If that is true he had bad brakes in the first place. Stoptech' feel great but they will not take seconds off you lap times.

    JJ
    I think it was a big brake upgrade from stock. I have Stoptech rotors on order. I did notice the Stoptech rotors are left/right specific as opposed to the stock replacements. Hopefully the vane design will generate low pressure at the inlets. I have debated trying to make a soft seal between the cooling duct backing plate and the rotor to increase the air pressure at the inlets, but I am not sure what the airflow pattern through rotor looks like or how much excess air flow bypassing the rotor inlets to the caliper/pads is good.

  4. #14
    Senior Member Carroll Shelby GlennCMC70's Avatar
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    I feel I was faster on OEM brakes.

  5. #15
    Senior Member Carroll Shelby marshall_mosty's Avatar
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    Quote Originally Posted by GlennCMC70 View Post
    I feel I was faster on OEM brakes.
    Then don't use the brakes as much and you won't slow down...
    Marshall Mosty
    AI/SI Texas Regional Director
    2011 NASA-TX American Iron Champ
    AI #67 "Mosty Brothers' Racing" (RIP)
    ST6 #21 Toyota Corolla (being revived)...

  6. #16
    Quote Originally Posted by marshall_mosty View Post
    Then don't use the brakes as much and you won't slow down...
    The Miataheads I have been hanging around with are considering removing the brakes to save weight.

  7. #17
    How about the type of pads being used. Jack's preference is either the Cobalt or PFC. Does not like the Hawk pads we have tried. Our rotors have either been the the stock one that were on the car when we bought it or generic NAPA ones put on prior to Road Atlanta. We haven't experienced the glazing problem Dennis has described.
    Last edited by JMR81; 03-26-2015 at 10:14 AM.

  8. #18
    Senior Member Carroll Shelby GlennCMC70's Avatar
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    Quote Originally Posted by marshall_mosty View Post
    Then don't use the brakes as much and you won't slow down...
    I question your engineer degree.........
    I still have an increase in rotational mass.

  9. #19
    Senior Member Carroll Shelby marshall_mosty's Avatar
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    Quote Originally Posted by GlennCMC70 View Post
    I question your engineer degree.........
    I still have an increase in rotational mass.
    Going from 12" to 13", yes, but the total increase of inertia on the rotor/wheel/tire combination is minimal.

    In fact, the increased inertia will allow you to carry more speed without your aero drag slowing you down...
    Last edited by marshall_mosty; 03-28-2015 at 11:36 AM.
    Marshall Mosty
    AI/SI Texas Regional Director
    2011 NASA-TX American Iron Champ
    AI #67 "Mosty Brothers' Racing" (RIP)
    ST6 #21 Toyota Corolla (being revived)...

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