Results 1 to 7 of 7

Thread: Help! Aluminium S caliper rebuild - leaking link pipe connections

  1. #1

    Help! Aluminium S caliper rebuild - leaking link pipe connections

    Hi all,

    I have rebuilt my Aluminium S calipers and unfortunately the link pipe connections are now leaking since I rebuit them.

    I tightened them up a little more but could not stop the leak and dont want to overtighten the fitting.

    Has anyone else experienced this and know how to fix them?

    Maybe I should make new link pipes in copper?

    If the seat in the aluminum caliper is marked, can this be polished out?

    They are correctly built up as LH and RH calipers but I think perhaps I might have swapped the right and left calipers over as the castings are the same when stripped right back. When I rebuilt them the link pipes might now be at the oppostite ends to what they were originally so they are trying to seal where the brake nipples were originally fitted. I am not 100% sure I have done this but maybe it would cause the fittings to leak?

    Any help appreciated


    Last edited by Rocket; 03-24-2018 at 03:13 PM.

  2. #2
    Senior Member Cliff's Avatar
    Join Date
    Mar 2006

  3. #3
    Thanks, will give them a try.

    I think I need new link pipes.

  4. #4
    Looks like I need to get the link pipe and bleed port seats on the callipers re-faced/machined a they are scored

    Anyone have any experience of doing this?


  5. #5
    Quick update.

    The ports for the link pipe and bleed nipples are different so make sure you build up the calipers correctly and don’t do what I did..

    I managed to make up some tools and polished the seats up ok. Problem solved!

  6. #6
    Senior Member 30westrob's Avatar
    Join Date
    Mar 2016
    SE Pennsylvania
    I recently rebuilt the front calipers on my early production 73 targa. I examined the bleed and pipe ports and observed no difference. So I was able to swap the pipes and swap calipers left to right, right to left without any issues. They are on the car and working well. Rob

  7. #7
    Senior Member
    Join Date
    Oct 2008
    Burford, ON, Canada
    Quote Originally Posted by Rocket View Post
    The ports for the link pipe and bleed nipples are different so make sure you build up the calipers correctly and don’t do what I did
    I don't believe that is true. I have many of these calipers, and I've never found a difference. The link pipes are handed however.
    Porsche Historian, contact for Kardex & CoA-type Reports
    Addicted since 1975, ESR mbr# 2200 to 2023 03
    Researching Paint codes and Engine Build numbers

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Message Board Disclaimer and Terms of Use
This is a public forum. Messages posted here can be viewed by the public. The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Use of online forums shall constitute the agreement of the user not to post anything of religious or political content, false and defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, or otherwise to violate the law and the further agreement of the user to be solely responsible for and hold the Early 911S Registry harmless in the event of any claim based on their message. Any viewer who finds a message objectionable should contact us immediately by email. The Early 911S Registry has the ability to remove objectionable messages and we will make every effort to do so, within a reasonable time frame, if we determine that removal is necessary.