Rear Brakes | FerrariChat

Rear Brakes

Discussion in '308/328' started by david bentley, May 10, 2022.

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  1. david bentley

    david bentley Karting

    Jan 2, 2004
    182
    Saint Louis Mo US
    Full Name:
    David bentley
    So are the rear calipers self adjusting or not....if not, could lack of adjustment be why the parking brake is so ineffective on so many 308's?
     
  2. ferrariowner

    ferrariowner Formula 3

    Feb 21, 2014
    1,155
    Mansfield, TX
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    Ron
    Set the rear brake pads to the proper clearance (.002) gap on each side. I do this about once a year. Make sure your motor mounts aren't sagging (E-cable rubbing exhaust manifold). E-Brake will work if everything is in proper repair and operation.
     
  3. ferrariowner

    ferrariowner Formula 3

    Feb 21, 2014
    1,155
    Mansfield, TX
    Full Name:
    Ron
    The rear brakes are not self adjusting.
     
  4. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,795
    30°30'40" N 97°35'41" W (Texas)
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    Steve Magnusson
    In theory, they are self-adjusting, they just don't do it very well. I.e., they self-adjust well enough so the pad-to-disk spacing doesn't get ridiculous and cause excessive pedal motion, but the pad-to-disk spacing is not small enough to have the e-brake work well.
     
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  5. absostone

    absostone F1 World Champ
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    Jul 28, 2008
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  6. bl10

    bl10 Formula Junior

    Jun 8, 2011
    441
    Chatsworth, CA
    Full Name:
    Barry Leavengood
    The E brake is not all that great but if its adjusted correctly it works OK. As Steve said it's difficult to get it tight enough without introducing brake pad drag. Mine will hold on a slight grade maybe 7%. And while the brakes (not E-brake) are kinda self adjusting just like most other disk brakes the E-brake is not and as the pads wear the mechanical E-brake adjustment gets opens up and the E brake gets less effective. Its a pretty poor design although used by Porsche (and maybe others) also. Picture details where e brake adjuster is. (Birdman picture)


    Barry

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  7. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
    26,795
    30°30'40" N 97°35'41" W (Texas)
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    Steve Magnusson
    #7 Steve Magnusson, May 14, 2022
    Last edited: May 14, 2022
    That's a good photo, but it only shows the outboard pad adjuster location under the plastic cap -- there is also an inboard pad adjuster under a metal threaded plug on the other side:
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    The stock inboard threaded plug, and/or its smallish female hex drive feature, often gets mangled so not uncommon to replace it with an aftermarket part with a male hex drive feature (appeared in the FML some decades ago ;)):
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  8. bl10

    bl10 Formula Junior

    Jun 8, 2011
    441
    Chatsworth, CA
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    Barry Leavengood
    Yep, forgot about that.
     
  9. derekw

    derekw Formula 3

    Sep 7, 2010
    1,521
    London, UK
    Full Name:
    Derek W
    Mine had aluminium hex socket caps which rounded when trying to remove them. I found some stainless caps in case anyone needs some (£10/pair for me to find them and post.)
     
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