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Thread: D2 calipers to D1

  1. 12th July 2014, 12:51 PM #21
    TonyC
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    Quote Originally Posted by p38arover View Post
    Are Defender calliper pistons or pads bigger than RRC/Disco 1?

    If not, and noting Dougal's comment about the rotors, I can't see why they'd be such an improvement except for the advantage of better cooling of the rotors.
    Defender front callipers have bigger pistons than Disco ones so they generate more clamping force.
    I don't know if there are differences in the master cylinders, or if it matters.

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  2. 12th July 2014, 01:02 PM #22
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    loanrangie
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    I've some checking on UK parts suppliers and it seems AP Delphi are the good ones and then there is Britpart , postage cost will be the big factor.
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  3. 12th July 2014, 02:03 PM #23
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    loanrangie
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    Just got a call from Bruce Davis and he is going to get me a price on the spacers on Monday, depending on price i might try them out and if i need more i will swap defender calipers.
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  4. 12th July 2014, 02:20 PM #24
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    Nick, i did the spacers once, don't waste your time, defender calipers is a much much better option. Recommend braided linesif you already haven't done so.
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  5. 12th July 2014, 04:27 PM #25
    Dougal
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    Quote Originally Posted by loanrangie View Post
    Just got a call from Bruce Davis and he is going to get me a price on the spacers on Monday, depending on price i might try them out and if i need more i will swap defender calipers.
    Spacers and vented rotors will not increase stopping power in normal use.
    They'll only help in high heat. Like towing or driving in steep mountains.
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  6. 12th July 2014, 06:52 PM #26
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    Quote Originally Posted by Dougal View Post
    Spacers and vented rotors will not increase stopping power in normal use.
    They'll only help in high heat. Like towing or driving in steep mountains.
    Agreed, towing is where i need to help with fade, never had a problem with the brakes as such but did notice the extra effort (and there for heat build up ) that it took to slow the mass down.

    Damien, yes the deffy calipers would be better but i dont know if SWMBO would agree on the extra cost.
    This is all dependent on the cost of the spacers, too dear and may as well just bite the bullet and get the calipers.
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  7. 12th July 2014, 10:36 PM #27
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    Quote Originally Posted by Dougal View Post
    Defenders use exactly the same rotors as RRC and D1. The only difference is vented or solid.
    They were defender vented discs which where also the same part number for the RRC I don't know about the D1.
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  8. 13th July 2014, 06:02 AM #28
    Dougal
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    Quote Originally Posted by dullbird View Post
    They were defender vented discs which where also the same part number for the RRC I don't know about the D1.
    Trust me. I have d1 axles with defender calipers and vented rotors under my rrc.

    I went through all of the caliper and rotor part numbers before starting this swap.
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  9. 13th July 2014, 08:41 AM #29
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    What do you mean trust me???

    I'm not arguing with you! I know that D1, RRC and defender are interchangeable

    I'm just telling you the part number given to me was just stated for Defender and RRC they didn't say D1 on it that's all.
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  10. 13th July 2014, 09:37 AM #30
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    If the pistons are larger as stated you need to reassess the master cylinder.

    Bigger pistons, more.displacement, more pedal travel or larger master cyl required
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