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Thread: drilled and slotted brake rotors

  1. #11
    Join Date
    Jan 2008
    Location
    Wasilla, AK
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    704
    Quote Originally Posted by 1320 View Post
    After thinking about my original post I decided to delete it and just let you read this and come to your own conclusion on rotors.

    From Stoptech.com

    Slotting helps wipe away debris from between the pad and rotor as well as increasing the "bite" characteristics of the pad. A drilled rotor provides the same type of benefit, but is more susceptible to cracking under severe usage. Many customers prefer the look of a drilled rotor and for street and occasional light duty track use they will work fine. For more severe applications, we recommend slotted rotors.

    Baer.com

    In years past, cross-drilling and/or slotting the rotor for racing purposes was beneficial by providing a way to expel the gasses created when the bonding agents employed to manufacture the pads began to break down at extreme temperatures. This condition is often referred to as "green pad fade" or "outgassing". When it does occur, the driver still has a good firm brake pedal, but simply little or no friction. Since this normally happens only at temperatures witnessed in racing, this can be very exciting! However, with today´s race pad technology, “outgassing” is no longer much of a concern. When shopping for races pads, or even ultra high performance road pads, look for the phrases, "dynamic surface treatment", "race ready", and/or, "pre-burnished". When these or similar statements are made by the pad manufacturer, the pad in question will likely have little or no problem with “outgassing”. Ironically more pedestrian pads used on most streetcars will still exhibit “outgassing”, but only when used at temperatures normally only encountered on the racetrack. Although cross-drilling and/or slotting will provide a welcome path to expend any gasses when and if they develop, it is primarily a visual enhancement behind today’s often wide-open wheel designs. Cross-drilling offers the greatest gas relief pathway, but creates potential "stress risers" from which cracks can occur.

    Very good info.
    2001 ECSB 4x4, 5.3, Radix, 3.0 pulley, VHP Trucker cam, 216/224 .551/.551 115 lsa, 1.8 Crane roller rockers, 4L65E, Yank SC3000, 3.73, Cal-Tracs, HPTuners.

  2. #12
    Join Date
    Dec 2004
    Location
    San Antonio, TX Area
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    1,741
    Can the Power Slot rotors be re-surfaced?
    "ALisSa1 Silverado"
    1990 Chevrolet RCSB 2002 Chevrolet Camaro LS1/4L60E
    Scrimpin Ain't Easy
    ( . Y . )


  3. #13
    Join Date
    Jul 2006
    Location
    College Station, TX
    Posts
    652
    I have already had mine resurfaced once. My brake upgrade to drilled and slotted rotors and ceramic pads decreased my stopped distance by alot. I really noticed the difference when i heated up the brakes i did not loose braking power. Braking loss was a real problem with the stock pads and rotors. It is a scary feeling when you are trying to stop and you push the brake pedal with two feet and it will not stop.

    +1 to drilled and slotted rotors with ceramic pads.

    IMO only way to go. Also order the summit stainless steel brake lines. This was a noticeable difference as well.
    2004 EXC Silverado 6.2L
    Mods:
    6.2L L92, Ported and Polished stage 3 heads, 95mm Throttle Body, 100mm MAF, NA, Pacesetter LT Headers, Magnaflow X-Pipe Muffler, Electric Fans, 160* thermostat, 2" Drop Shackles, Hellwig Sway Bars Front and Rear, Monroe Reflex Shocks, NGK Spark Plugs, AMW Oil Catch Can, 17"x10" wheels on Kuhmo Tires.

  4. #14
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    AFAIK they can be turned.

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