505 vented front rotors plus rear drum/disc upgrade
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Thread: 505 vented front rotors plus rear drum/disc upgrade

  1. #1
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    Default 505 vented front rotors plus rear drum/disc upgrade

    I want to upgrade the brakes on our 1984 505 wagon (planned V6 engine upgrade). Vented front rotors are available for the 505, but what calipers do I use? The vented rotor is 7.5mm thicker than the solid rotor. Did the later GTI wagons use the vented rotors? Our car has the Teves front brakes.
    Second question - I want to change the rear brakes from drums to discs. Can the discs be adapted on to my existing rear axle or do I need to change the whole rear axle?

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  2. #2
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    the rear axle is the same, just the hub carrier is different.

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    Fellow Frogger! Doush_504's Avatar
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    I would say that the GTi does have vented discs
    Peujohn could confirm since he bought GTi struts at some point.
    Chadi

    1982 504 SR white manual sedan with A/C (257 000 Km)
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  4. #4
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    Our GTis dont have vented discs.
    Wrecking yards in USA have 505 vented discs as they came with the turbo motor we dont have here.
    604 caliper mounts ?
    Peter Chisholm likes this.

  5. #5
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    604 brakes much easier to get in this country. Don't bother with discs on the rear, the car won't be much quicker with the V6.

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    1000+ Posts Beano's Avatar
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    I second that about the rear brakes. The rear drums actually operate very well.

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    Fellow Frogger! Bruce Llewellyn's Avatar
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    604 front brakes bolt on, but the 604 has larger wheel studs. If you stick with the rear drums the handbrake gives a lot less trouble than it can with disks.
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  8. #8
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    Quote Originally Posted by Bruce Llewellyn View Post
    604 front brakes bolt on, but the 604 has larger wheel studs. If you stick with the rear drums the handbrake gives a lot less trouble than it can with disks.
    The wheel studs are interchangeable between the 12mm 504/5 studs and the 14mm 604 studs , just knock them out with a hammer and use a wheel nut and spacer to seat the new stud.
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  9. #9
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    Also, a lot of work to fit rear discs to a live axle car.
    Quote Originally Posted by Bruce Llewellyn View Post
    604 front brakes bolt on, but the 604 has larger wheel studs. If you stick with the rear drums the handbrake gives a lot less trouble than it can with disks.

  10. #10
    VIP Sponsor David Cavanagh's Avatar
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    I've got a set of vented discs and calipers off a 604 already mounted on a 505 hub I was going to use on a v6 project but that'll never happen now.
    David Cavanagh

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