Somebody Please Help me!!!!

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Suspension, Brakes and Tires Discussion, Somebody Please Help me!!!! in Item Specific Cadillac Discussion; I have a 1968 Deville (472) and I just purchased the front disk brake system from a guy who had ...
  1. #1
    dbird35 is offline Cadillac Owners Member
    Automobile(s): 1968
    Join Date
    Jul 2009

    Somebody Please Help me!!!!

    I have a 1968 Deville (472) and I just purchased the front disk brake system from a guy who had a 1969 deville. I took everything from the spindle out plus the poportional valve...My question is do I need to install the poportional and change my brake lines or can I run the same brake lines that was used for the drums and not install the poportional valve? And If I have to change the brake lines is there a place that sells the brake line pre bent......Somebody Plase Help!!!!

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  3. #2
    tripowerbird is offline Cadillac Owners Member
    Automobile(s): 2001 Seville STS
    Join Date
    Oct 2004
    New Hampshire

    Re: Somebody Please Help me!!!!

    You need to install the proportioning valve. If I remember correctly you'll experience rear brake lockup every time you use the brakes. The valve limits pressure to the rear until a certain pressure is reached.

  4. #3
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante. 2005 Jag XK8, 1988 Mercedes Benz 300 SE
    Join Date
    Feb 2003

    Re: Somebody Please Help me!!!!

    You also need the master cylinder. A disc brake master cylinder has a check valve within it to keep the pads close to the rotor anticipating the next application. And I wouldn't use anything but a rebuit or new master cylinder! Your lines, hoses should work fine assuming threaded fittings are the same. I would also get new flex hoses for the calipers to make sure they clear the tires and steering linkage.

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