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Potential Gearbox issue

Discussion in 'Engine & Transmission' started by OberonViking, Apr 15, 2021.

  1. OberonViking

    OberonViking Well-Known Member

    Messages:
    1,874
    Location:
    Bathurst, NSW
    I had a look at a 73 bus today.
    It had issues with going into 2nd from 1st or 3rd, and the clutch point is a lot further out than I would like. Could these be linked? Is this a gearbox or clutch about to shit itself? It is a 3 rib gearbox with a 2.0L.

    If it is a gearbox issue, what will a replacement cost me?
     
  2. BrianK

    BrianK Well-Known Member

    Messages:
    7,952
    Location:
    Port Kennedy WA
    May also be a gear stick problem Robert, our first kombi we had same troubles finished up putting in a scatdrag shifter. Ok after that, still think it’s ok, Steve might let know he has had it for 12 years. Maybe needs adjustment etc.
     
  3. David H

    David H Well-Known Member

    Messages:
    6,603
    Location:
    newcastle
    Sounds like a clutch cable about to 'let go' ....break.:(
    https://www.justkampers.com.au/search/result/?q=clutch cable t2
    Cheaper than a gearbox:rolleyes:.
    Cheers
     
    BrianK likes this.
  4. OberonViking

    OberonViking Well-Known Member

    Messages:
    1,874
    Location:
    Bathurst, NSW
  5. cbus

    cbus Well-Known Member

    Messages:
    13,475
    Location:
    sunshine coast
    Could be an adjustment issue for both ??
    Also would be wanting to know if the spigot shaft was changed in gear ox to match.
    They locate differently between type 1 and type 4 engines.
     
    BrianK likes this.
  6. OberonViking

    OberonViking Well-Known Member

    Messages:
    1,874
    Location:
    Bathurst, NSW
    That was my first thought too, I know this simple adjustment made a huge different in my 79 bus.
     
    BrianK likes this.
  7. OberonViking

    OberonViking Well-Known Member

    Messages:
    1,874
    Location:
    Bathurst, NSW
    I think there is little to no chance of finding that out with removing and inspecting. It goes quite well though, and I gave it a good go through the roundabouts and on the motorway.

    Three rib gearbox came with the 1600's, right? and 5-rib was 1.7, 6-rib was 2.0 - do I have that correct?
     
    BrianK likes this.
  8. cbus

    cbus Well-Known Member

    Messages:
    13,475
    Location:
    sunshine coast
    Pretty much.
    I think the 1700 also had the 3 rib.
    1800 the 5 rib.
    Probably a modified 3 rib in 1700 to match 1700/ being type 4.
    Being a 73 the 3 rib was possibly factory to match 1600 or 1700 with differing shafts.?
    Bit of guessing.

    My punt would be that if the 2 litre has been in there a while and there's no horrible noises or other hard selection the box and engine are matched.

    The difference in revs are ( from memory) 3340 vs 3600 @ 100 km/ hr.
    Will be fine.
     
    BrianK likes this.
  9. tintop

    tintop Well-Known Member

    Messages:
    943
    Location:
    Canberra
    Could just be the reverse lockout plate under the gearstick needing to be adjusted...similarly the clutch cable ... a new nylon bush on the shaft under the gearstick and a new joiner at the gearbox end will tighten everything up

    Good acceleration with a 2 litre and 3rib but they scream a bit on the highway ... I found that a 5rib with a 2 litre is a nice combo in that regard
     

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