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Thread: Brake master cylinder questions

  1. #11
    Veteran Skylar's Avatar
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    Yah. If you are keeping standard splitter, use 2 port. or you could plug the third port on the MC.

  2. #12
    Senior Member Faceplant456's Avatar
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    go the Pajero master cylinder, they are easy to find and are already designed for large calipers, i have one and will be running Hilux 4 pot calipers and JDM T series calipers, steroid chickens also has this set up.

    but you will need to get another piece from a ford laser linx to make it all work.
    should look like this when its complete.

    this is the MC on its own.

    this is the bit from the ford.
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  3. #13
    Moderator Sam-Q's Avatar
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    whats the bore of the Pajero?
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    thats 15/16" sam i erection steroids beams 86 has em

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    What I use is RX7 front brakes and standard AE86 master cylinder. When the AE86 master cylinder starts to leak, I get another one the same. I did the maths and find the stock 13/16" MC is well suited to the Mazda brakes, and I find it works well in practice also.

    Currently I have no rear bias valve, and the rear brakes lock up too soon. Im installing a Wilwood bias valve this weekend in the stock position.

  6. #16
    Glenn ke_70's Avatar
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    what rear end are you running?

  7. #17
    Veteran Jonny Rochester's Avatar
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    I have the "JDM" disc brakes at the rear.

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    Veteran Dom86's Avatar
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    Ahh the stock position?? What do you mean by that please?
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    F:FC calipers on FC disc, using Ferodo DS2500 then DS3000 pads.
    R: unknown pads then project mu on rear running new EBC rotors on T18 diff converted to AE86 disc brake.

    I did run the original AE86 master and is usable with the FC caliper/disc rear set up and I ran this for 3-4 years without issue (inc stock proportioning valve), feeling that there was a little more brake available in the rear, but happy to rely on the front brakes.
    When my master started leaking, and I wanted to upgrade to proportioning valve to get more rear brakes. I chose the Pajero 15/16 for a little better pedal feel as the stock pedal gets a little longer with the FC calipers.
    The Pajero MC was about $130 brand new inc a little adapter similar to the bit on the ford laser.

    Would highly recommend the proportioning valve, has made the braking that little bit more confident going into northern at Mallala. When the speedo is repeatedly pointing at 'kmh', you need to be confident with the middle pedal!

  10. #20
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    The AE86 as sold to the public had a rear brake proportioning/bias valve, located on the right side of the engine bay, under the brake master cyl. The Wilwood and Tilton adjustable valves are about the same size and style as the Toyota one, only they have a handle coming out of them to adjust the spring preload. I plan to mount this in the same position.

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