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1800 exhaust studs

Discussion in 'Engine & Transmission' started by Aspudis, Nov 21, 2018.

  1. Aspudis

    Aspudis Member

    Messages:
    38
    Location:
    Central Coast, NSW
    Hi all.
    Can anyone tell me what end of the stud goes into the head? I’m missing one altogether and bought a replacement with one end 8mm and the other 9mm which I am told is correct.

    I thought that the bigger end (9mm end) would go into the head but it doesn’t seem to. It seems too tight. The 8mm end goes into the head easily though, maybe even a little too easy. Any thoughts or advice appreciated.

    Thanks, Nathan
     
  2. rstucke

    rstucke Well-Known Member

    Messages:
    658
    Location:
    Wamberal NSW AUS
    you got it
    The 9mm end is a friction fit so that when you undo the exhaust nut the stud won't unscrew.
     
    Aspudis likes this.
  3. Aspudis

    Aspudis Member

    Messages:
    38
    Location:
    Central Coast, NSW
    Any ideas on how to get it to go in? I’ve tried the ‘using two nuts tightened against each other’ method.
     
    David H likes this.
  4. Mellow Yellow 74

    Mellow Yellow 74 Active Member

    Messages:
    812
    Location:
    Sydney
    The double nut trick should work to get the 9mm end in - maybe you need to carefully run a tap down to remove any corrosion
     
    Aspudis likes this.
  5. Aspudis

    Aspudis Member

    Messages:
    38
    Location:
    Central Coast, NSW
    So at least two of the 9mm stud threaded holes are stripped out in head. Any ideas on the best way to fix this? My thoughts are to tap it out to a 10mm hole and use a 10mm high tensile bolt cut to the correct stud length as a new stud. Obviously I’ll need to open the flange homes up very slightly to accomodate. 9mm is such a bugger of a size!! Even getting helicoils in that size are hard to find!

    Any advice appreciated!
    Thanks, Nathan
     
  6. Mellow Yellow 74

    Mellow Yellow 74 Active Member

    Messages:
    812
    Location:
    Sydney
    You can buy step studs to fix this without having to drill out the holes in the exhaust
     
  7. Aspudis

    Aspudis Member

    Messages:
    38
    Location:
    Central Coast, NSW
    Do you know where from?
     
  8. Barry

    Barry Well-Known Member

    Messages:
    2,750
    Location:
    Abbotsford NSW
    Most VW shops but if you go to www.aircooled.net and search part N144831

    You can also use a Time-Sert
     
  9. Mellow Yellow 74

    Mellow Yellow 74 Active Member

    Messages:
    812
    Location:
    Sydney
  10. Aspudis

    Aspudis Member

    Messages:
    38
    Location:
    Central Coast, NSW
    Can anyone tell me the correct torque to tighten the exhaust stud nuts back up?
     
  11. cbus

    cbus Well-Known Member

    Messages:
    10,921
    Location:
    sunshine coast
    Last edited: Nov 30, 2018

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