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  •  » At the risk of a doh! Question

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    4/27/2014 9:27 AM  #1

    MWM
    I FYI 24-7

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    Registered: 4/01/2013
    Posts: 423

    At the risk of a doh! Question

    Recently I got my '65 FB back from the painter. Yesterday I purchased some new tires and when they removed the wheel, all I could think about was that the brake rotors look odd. What direction does the curved slots go? I think they may be installed wrong.
    Thanks!

     

    4/27/2014 9:56 AM  #2

    HenryJ
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    From: Westlake, TX
    Registered: 4/11/2013
    Posts: 363

    Re: At the risk of a doh! Question

    William, are you talking about the grooves in the rotor face or the internal vented vanes at the rotors edge? If it's the grooves on the face I don't think it matters, I've seen them both directions. I think more importantly you go off the cooling vanes if your rotor has them.

     

    4/27/2014 11:47 AM  #3

    MWM
    I FYI 24-7

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    Registered: 4/01/2013
    Posts: 423

    Re: At the risk of a doh! Question

    Thanks John!
    Just to be sure, if I stick a screwdriver in the top, which way for the internal fins?
    Thanks

       •Thread Starter
     

    4/27/2014 1:57 PM  #4

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 11,729

    Re: At the risk of a doh! Question

    The internal fins act like a pump. Air goes in the center and is forced out the perimeter. Vanes need to go from center to two o'clock on driver side for example.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    4/27/2014 4:01 PM  #5

    ultrastang
    I FYI 24-7

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    From: Camden, Arkansas
    Registered: 4/01/2013
    Posts: 570

    Re: At the risk of a doh! Question

    If you're referencing a ventilated rotor (one that has an air gap between the inner and outer friction surfaces), it depends on the vane design if the rotor is directional or not.

    If the ventilated rotor cooling vanes are straight (no curvature to them) then it doesn't matter what side of the vehicle the rotor is placed on. If the cooling vanes between the inner and outer friction surfaces are curved, then the curvature of the rotor vanes should face rearward.

    If you're talking about slotted rotors (slots cut into the friction surface of the disc) and which way they should point, it depends on if the cooling vanes are curved or straight. If the cooling vanes are curved then orient the rotor so that the cooling vanes point rearward regardless of which way the slots are pointed. If the vanes are straight, the slots could be turned either direction but, the slots are generally also installed pointing rearward. Again, it mainly depends on the vane design and the manufacturers recommendation on installation.

     

     

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