What is this pipe in the Driver side front wheel arch?

Discussion in 'Bay Tech Clinic' started by Gordon D, Aug 28, 2017.

  1. Gordon D

    Gordon D Active Member

    Messages:
    101
    Location:
    Brisbane
    Hi guys, can anyone help identify what this pipe is in the driver's side front arch? I couldn't trace it back very well and it seemed to connect to the brake boost ... but that doesn't make sense ... and I am not sure what I am looking at to find it in my Bentleys.
    It appears to end flush to the inner guard but does not seem to be connected to anything there.

    mystery_pipe_1.jpg
    mystery_pipe_2.jpg
     
    Last edited: Aug 29, 2017
  2. oldman

    oldman Super Moderator Staff Member

    Messages:
    7,381
    Location:
    Avalon Beach NSW
    Not familiar with this .....but if it is connected to the booster unit, it would be the "breather" that supplies air to the non-suction side of the diaphragm, within the booster unit itself.
    I'll take a peek at mine when it's light, tomorrow.
    Cheers,
    Mark
     
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  3. rstucke

    rstucke Active Member

    Messages:
    273
    Location:
    Wamberal NSW AUS
    Most cars boosters breath clean air from under the dash. Not so for a bus as the booster is underneath. The pipe lets it breath from a void between panels which has relatively clean air. There is a special cap on the booster that connects to the pipe not found on other vehicles. One reason why just any boosters won't fit. I've seen a thread where a Commodore booster was fitted. Good luck with the time that it would last.
     
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  4. Mordred

    Mordred Super Moderator Staff Member

    Messages:
    2,494
    Location:
    Penna, Hobart
    Bottom line is it is supposed to be there. I have seen a few rusted out but I would suspect it would be good in those cases to replace or patch it. Yours looks in pretty good nick for 40 years of exposure to water and mud.

    Adrian
     
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  5. Gordon D

    Gordon D Active Member

    Messages:
    101
    Location:
    Brisbane
    My thoughts too - am keen to know what it is and how it operates so I can be sure it is doing it as effectively as it can :)
     
  6. oldman

    oldman Super Moderator Staff Member

    Messages:
    7,381
    Location:
    Avalon Beach NSW
    Just keep it clear/ unblocked and it'll do it's job ;)
    Cheers,
    Mark
     
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  7. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    1,073
    Location:
    Seven hills
    Hi Gordon D.It also looks like it isn't in correctly on the inside of the B pillar/wheel arch area .As yours is angled down towards the arch it should be straighter going into the body there should be a rubber grommet that it goes into and into the body up tight in the wheel arch and where the B pillar comes down.Another words the outer side of the pipe should go higher up .
    Wayne
     
  8. rstucke

    rstucke Active Member

    Messages:
    273
    Location:
    Wamberal NSW AUS
    This is what the connections should look like
    P8290031.jpg P8290032.jpg P8290033.jpg P8290034.jpg P8290035.jpg
     
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  9. David H

    David H Well-Known Member

    Messages:
    2,057
    Location:
    newcastle
    Just went & looked at mine. Same as rstucke's. So it's lee side of brake booster diaphragm to atmosphere inside B pillar? If that's the case German engineering gets a thumbs up;). Here 'ti's. Ricks is pristine....mine's dirty black! :( P1100992.jpg2.jpg

    Just learnt something new about old boy:D.

    Great question GordonD!
    Cheers
     
    Last edited: Aug 29, 2017
  10. Gordon D

    Gordon D Active Member

    Messages:
    101
    Location:
    Brisbane
    Bloody champions @Wayne murray and @rstucke ... appreciate the extra info and supporting pics.

    Agreed - though I think I have way more opportunities to learn something new than you at the moment :p
     
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