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Brake master cylinder interchangeability

Discussion in 'Brakes' started by J.Lackland, Feb 26, 2018.

  1. J.Lackland

    J.Lackland New Member

    Dear forum members!
    I am about to refurbish a -68 RHD 2000 TC (ex UK) that's been off the road since 1981. Of course, the brake system has to be completely renewed/rebuilt. The master cylinder is seized, thus probably past saving, and I intend to buy a new one but, this winter I scrapped a -66 2000 with Dunlop brakes and saved the master cylinder.
    If I decide to have the Dunlop cylinder rebuilt, would it be compatible with the rest of the brake system?
    Yes, I'm aware that it most likely would be penny wise, pound foolish, but still interesting to learn if,and in what way the braking performance would suffer from such a change.

    Attached Files:

  2. sdibbers

    sdibbers Well-Known Member

    I would give Geoff at Wins International a call. He supplies both Triumph and P6 parts, so should know of cross compatibility of them.
  3. partviking

    partviking Member

    They will certainly both fit as I have a later Girling Master Cyl. fitted to an early Dunlop car. Whether they both perform the same I can't say but I doubt there is any discernable difference.
  4. harveyp6

    harveyp6 Well-Known Member

    I converted several cars from Dunlop to Girling but I didn't change the Master Cylinder, or the servo come to that. Had they been faulty I would have replaced with the Girling units but in the cases I did there was no need.
  5. J.Lackland

    J.Lackland New Member

    Thank you all for your comments!
    As planned, I'll fit a new Girling Master Cylinder, but will send the Dunlop one to our brake specialist, together with the servo and calipers. If possible to rebuild, I'll then have a spare either for my own use or for somebody else's. (Though really early P6's a few and far between in Sweden).
  6. j_radcliffe

    j_radcliffe Member

    My 1966 Rover 2000 TC, has a girling master cylinder. The seal kit for a MGA is the same, 7/8 inch diameter. I had mine sleeved, and fitted a new seal.
    Some of the dunloped braked cars were fitted with girling boost per ex factory. Mine is one of those cars.
    I do know of a least 2 dunlop braked cars with girling calipers on the rear. So I think it is fair to say you can mix and match a bit.

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