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CoupeQuattro rear brakes bolt-on upgrade version

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  • Oddi78
    replied
    Ok, so I must have the 280mm carrier from det S8 D2, and URs4/S6 caliper to this fit the 280mm discs set up?
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    This gallery has 2 photos.

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  • _ShurikeN
    replied
    D2 alu caliper should fit the carrier, but not sure about E-brake cable: it has different attachment point.

    A8 D2 rear brakes should be 269mm IIRC. Should fit similar way as the 280mm setup with Allroad 4B rear 269 disc, but that is not checked properly.

    Leave a comment:


  • Oddi78
    replied
    Originally posted by _ShurikeN View Post
    A version for Coupe Quattro typ89 bolt-on rear brakes upgrade with 5x112 lug pattern:

    Rear hubs from A4 B5 Quattro OE VAG p/n 8D0 501 653 B (+8mm track outwards each side)
    Cast iron calipers from UrQuattro/200(44)/V8(D11)/UrS4(4A)/UrS6(4A) for 269mm brakes VAG p/n 447 615 423(4)
    Rear caliper carriers from S8(D2) 280mm VAG p/n 4D0 615 425 C
    Brake discs A4(B5) front == S8(D2) rear 280mm VAG p/n 8E0 615 301 B(P)
    Brake pads, let's say, VAG p/n 1J0 698 451 L

    ~~2-mm-thick M10 washer is to be placed between hub carrier and caliper carrier.

    Caliper carrier bolts must be replaced to smth at last 4mm longer than native ones. The easiest and cheapest way is to use OEM VAG bolts N 101 815 02 (M10x1.25x40) and cut away redundant thread.
    Do you know if the A8 4.2 228kw alu caliper fit this set ut?
    And do the carrier fits the your set up?

    Leave a comment:


  • Oddi78
    replied
    Originally posted by Wolfgang View Post
    or just like i did:

    a4 b5 quattro rear hubs
    rs4 b5 caliper-brackets (unmodified)
    girling 41/43 from urs4/urs6
    standard brake line
    standard hand brake cable
    rs4 b5 brake discs

    this is really pnp for 312mm on the S2 coupé and fits perfectly..
    What do you use in front, and what master cylinder do you use?
    Last edited by Oddi78; 31 March 2021, 22:13.

    Leave a comment:


  • _ShurikeN
    replied
    Hello,
    I have this setup: https://www.s2forum.com/forum/techni...e-on-the-front

    I would recommend something similar. Calipers with 4 big pistons (40/44mm), 2 halves (non-monoblocks). Radial-mounted calipers would be smarter of course (Audi RS2, Porsche, Alfa-Romeo etc.) I'm planning to change my calipers to ones from RS2 just because I have found original ones with original brackets (for the sake of authenticity) though RS2 calipers have smaller pistons.

    Would not recommend Cayenne 17Z/18Z: in my opinion they are too big and heavy for small chassis audis, leave them for big-chassis 44/4A etc.

    Tandem vacuum booster with 25-27mm main cylinder (I have one from Allroad 4F).
    Extra vacuum reservoir would be nice to have. Planning to install one from Volvo.

    Leave a comment:


  • Oddi78
    replied
    Originally posted by _ShurikeN View Post
    A version for Coupe Quattro typ89 bolt-on rear brakes upgrade with 5x112 lug pattern:

    Rear hubs from A4 B5 Quattro OE VAG p/n 8D0 501 653 B (+8mm track outwards each side)
    Cast iron calipers from UrQuattro/200(44)/V8(D11)/UrS4(4A)/UrS6(4A) for 269mm brakes VAG p/n 447 615 423(4)
    Rear caliper carriers from S8(D2) 280mm VAG p/n 4D0 615 425 C
    Brake discs A4(B5) front == S8(D2) rear 280mm VAG p/n 8E0 615 301 B(P)
    Brake pads, let's say, VAG p/n 1J0 698 451 L

    ~~2-mm-thick M10 washer is to be placed between hub carrier and caliper carrier.

    Caliper carrier bolts must be replaced to smth at last 4mm longer than native ones. The easiest and cheapest way is to use OEM VAG bolts N 101 815 02 (M10x1.25x40) and cut away redundant thread.
    Hallo!
    What set up do you recoment in front with this 280mm brake kit in the rear?

    Leave a comment:


  • Jaswan
    replied
    I believe that all B5 quattro rear hubs are the same?

    Jase.

    Leave a comment:


  • Oddi78
    replied
    Originally posted by Wolfgang View Post
    or just like i did:

    a4 b5 quattro rear hubs
    rs4 b5 caliper-brackets (unmodified)
    girling 41/43 from urs4/urs6
    standard brake line
    standard hand brake cable
    rs4 b5 brake discs

    this is really pnp for 312mm on the S2 coupé and fits perfectly..
    Must the hub be from RS4 og can I use a hub from a 1.8t a4 b5?

    Leave a comment:


  • _ShurikeN
    replied
    Slightly updated some tech info and uploaded better pictures of an assembly.

    Leave a comment:


  • caterpillar
    replied
    to hav TOO big brakes on its too silly.. spec in the rear end.. i hav 330mm rotor on my s6 car... and this car are a heavy vagon... 18" rims are the smalles one.. and the tyres cost alot...
    big brakes are a good idee, but not too big...!! its heavy also..

    Leave a comment:


  • Error404
    replied
    Your solution is the best Wolfgang, just the cost of the RS4 rotors is pretty crazy!

    Leave a comment:


  • Wolfgang
    replied
    or just like i did:

    a4 b5 quattro rear hubs
    rs4 b5 caliper-brackets (unmodified)
    girling 41/43 from urs4/urs6
    standard brake line
    standard hand brake cable
    rs4 b5 brake discs

    this is really pnp for 312mm on the S2 coupé and fits perfectly..

    Leave a comment:


  • _ShurikeN
    replied
    Good version too.
    Inexpensive brake disk 8D0 615 601 D, but caliper carrier 8D0 615 425 was unaffordable under my circumstances.

    Leave a comment:


  • varia
    replied
    I have
    Audi B5 A4 rear hub (I had original s2 hubs, but for this setup i need that extra 8mm that the a4 hub has)
    Audi urS4/6 rear calipers
    Audi B5 S4 rear caliper brackets
    Audi B5 S4 rear vented brake disk

    Leave a comment:


  • BorisShakhov
    replied
    Originally posted by _ShurikeN View Post
    They must be great with something about ~345 brembos on the front.
    For truck not for a street sporty coupe
    345 weighs a ton!

    Leave a comment:

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