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gearbox to motor bolts

Discussion in 'Bay Tech Clinic' started by deger, Apr 1, 2020.

  1. deger

    deger Active Member

    Messages:
    250
    Location:
    Melbourne
    Hi all,
    I am fitting Moby's 2L gearbox to the 2l motor.
    I did not seperate them originally and when I recovered them, the 4 bolts were missing.
    What bolts are required as it looks like a trip to a bolt shop?
    Are the bottom two bolts or studs? No pics or ref in Bentley
    Darren
     
  2. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    3,728
    Location:
    Seven hills
    The two bottom fixings are studs that are in the engine block, so you will need washers and nuts.
    Top passenger side is a bolt and washer,which there is a thread in the case. Drivers side is washer and nut from engine compartment side as that goes onto the starter motor bolt.
    Need four washers
    Three Nuts
    One bolt
     
  3. Alpal

    Alpal Moderator Staff Member

    Messages:
    8,760
    Location:
    Melbourne Bend of Islands
    Probably needs the thread size and bolt length if available?
     
  4. rstucke

    rstucke Well-Known Member

    Messages:
    1,381
    Location:
    Wamberal NSW AUS
    special bolt on the drivers side goes through the starter motor mounting hole
    the head of the bolt is cut away on one side to key into the mounting flange to stop it from turning
    Studs down low
    Bolts up top
     
  5. Alpal

    Alpal Moderator Staff Member

    Messages:
    8,760
    Location:
    Melbourne Bend of Islands
    Good thinking Rick. I had forgotten that.
     
  6. Barry

    Barry Well-Known Member

    Messages:
    4,773
    Location:
    Abbotsford NSW
  7. rstucke

    rstucke Well-Known Member

    Messages:
    1,381
    Location:
    Wamberal NSW AUS
    1500king and grumble like this.
  8. Barry

    Barry Well-Known Member

    Messages:
    4,773
    Location:
    Abbotsford NSW
    Yeah - can see it says “1950” in the pic

    More to give an idea of the half moon head?

    Do you know if you can grind a normal bolt down?
     
  9. Alpal

    Alpal Moderator Staff Member

    Messages:
    8,760
    Location:
    Melbourne Bend of Islands
  10. Barry

    Barry Well-Known Member

    Messages:
    4,773
    Location:
    Abbotsford NSW
    As Rick said - it will be the 2nd (dearer) one.

    First one is for a beetle gear box
     
  11. rstucke

    rstucke Well-Known Member

    Messages:
    1,381
    Location:
    Wamberal NSW AUS
    you can grind the head on one side of a high tensile bolt (8.8 or higher)
     
  12. deger

    deger Active Member

    Messages:
    250
    Location:
    Melbourne
    Thanks everyone for chipping in. One of the benefits of home isolation is catching up on kombi jobs :)
    I'm OK with studs in motor at the bottom x 2. Bolt on passenger side top 10mm makes sense. The starter motor bolt which I found fits and holds the starter motor BUT does nothing for attaching the gearbox to motor. Is that correct that there are only 3 bolts that are holding the gearbox and motor together??


    gearbox bolts.jpeg Starter bolt.jpeg starter bolt2.jpeg
     
  13. rstucke

    rstucke Well-Known Member

    Messages:
    1,381
    Location:
    Wamberal NSW AUS
    the bolt goes in the other way
     
    grumble likes this.
  14. rstucke

    rstucke Well-Known Member

    Messages:
    1,381
    Location:
    Wamberal NSW AUS
    and I think that one is the short bolt from the early gearbox
    you need the long one
     
  15. deger

    deger Active Member

    Messages:
    250
    Location:
    Melbourne
    Ahhh, making sense now. What is interesting is that D bolt was removed from old 1800 gearbox. THAT is how it was fitted and holding the old starter motor on. That means that Moby's motor and gearbox had only been fitted with three active bolts by some previous mechanic.

    Given that I'm not using the stock starter, would a normal bolt suffice? I don't think the D bolt would work with this starter motor flange so redundant ?
    The bolts at JK aren't available at present.


    All Photos - 1 of 1.jpeg
     
    David H likes this.
  16. grumble

    grumble Well-Known Member

    Messages:
    1,161
    Location:
    Taree
    Deger you are on a winner after 50 years in the trade I have never seen a bolt fitted to the starter backwards on the bell housing, if you wanted to stop the bolt from turning without someone underneath you could weld a small bolt to the head so that the bolt won't turn when the nut is tightened.
     
    rstucke and Grantus like this.
  17. rstucke

    rstucke Well-Known Member

    Messages:
    1,381
    Location:
    Wamberal NSW AUS
    get a bigger bolt
     
    tintop likes this.
  18. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    3,728
    Location:
    Seven hills
    You need a Nut and washer to hold the stater motor bolt on from the motor side of things.
    My blue bus when I first got it and when the starter motor packed up. What was a 5 minute job end up 2 hour as the previous owner put that bolt back to front.Two man job and plenty of swearing was on order.
     
    Last edited: Apr 1, 2020
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  19. deger

    deger Active Member

    Messages:
    250
    Location:
    Melbourne
    I'm not sure that's a comp I was keen to win :)

    I think I'll go with a bigger standard bolt this time around. Easier to source too.
     
    David H likes this.
  20. Alpal

    Alpal Moderator Staff Member

    Messages:
    8,760
    Location:
    Melbourne Bend of Islands
    Possibly have one buried somewhere? Will have a look if you want.
    Social distancing applies. What suburb of Sunny Melbourne are you?
     

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