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Early type brake pressure regulator

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  • DeS
    replied
    Guys,

    do you know how to tell the diffrence between the eary type and newer? They look hardly the same. thx
    Last edited by DeS; 20 November 2020, 09:45.

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  • Rusty
    replied
    Bump, still after one of these - 893612303A

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  • Rusty
    replied
    Anyone got one of the early type?

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  • Rusty
    replied
    With the ABS on, it's absolutely not a problem. I'm looking in to taking the ABS off for track.

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  • s2driveruk
    replied
    Originally posted by Rusty View Post
    An extra 30mm dist radius takes care of that. With the ABS off, the rears lock up like a hydraulic handbrake on a rally car! not ideal. Bigger rear brakes mean more heat capacity, so more consistent braking. There's only so much grip available, so with the ABS off, I want the fronts to lock first (for obvious reasons).
    Sounds....interesting!!! Be a proper ditchfinder in an emergency stop lol

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  • Rusty
    replied
    Need to get hold of one and see what it's made of...

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  • Error404
    replied
    There is a big hex headed plug on one end, I assume that is used to set pre-load on a valve spring or something inside. I didn't want to start messing with it though.

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  • Rusty
    replied
    Oh yes, where's that? Pic? It may be underneath on mine, as I can't see a part number on the top or front.

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  • Error404
    replied
    I wonder if you can adjust it using that threaded nut on it?

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  • Rusty
    replied
    An extra 30mm dist radius takes care of that. With the ABS off, the rears lock up like a hydraulic handbrake on a rally car! not ideal. Bigger rear brakes mean more heat capacity, so more consistent braking. There's only so much grip available, so with the ABS off, I want the fronts to lock first (for obvious reasons).

    Leave a comment:


  • Error404
    replied
    Surely the later type will be better for you with your rear brake upgrade? Or are you starting to lock up?

    I want more rear bias! Its a same I just refitted mine & bled the brakes

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  • Rusty
    replied
    From S2central, all in Bar:-

    Front___Rear up to 92___Rear after 92
    _50______30 - 35_______37.5 - 41.5
    100______45 - 50_______51.5 - 57.5

    So, early type reduces brake pressure to the rear by quite a bit.

    Ideally, I'll fit an adjustable one but wanted to try off the shelf first, as it'll be a lot neater and there's a question mark about the adjustable regs with ABS. I'll be plumbing it in before the pump, as per the OE one, so that's perhaps not an issue.

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  • dominator
    replied
    I have both of them.

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  • Error404
    replied
    It sits in front of the master cylinder on early cars.

    What is the difference between the two different parts Andy?

    For reference:
    early 893612303A
    late 8A0612303

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  • john bowden
    replied
    im after one as well let me know how you get on

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