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VB 304 Steering Rack Width

Discussion in 'VB - VK Holden Commodore (1978 - 1985)' started by VB304, Mar 24, 2018.

  1. VB304

    VB304 New Member

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    Hi All,
    I’ve put a later model K frame in my VB with an injected 5L due to the exhaust/steering rack clearance issue and the rack that came with the new k frame is longer than the rack that came off the car
    With everything fitted up the front wheels have about 20 degrees of toe in on both sides.
    I looked at switching tie rod ends but they look the same on both the VB rack and the new one.

    Any ideas on what the issue could be would be a huge help.

    I was told the k frame was out of a VN so I’m hoping it’s not a VS one which has the wider track.

    Cheers.
     
  2. Smitty

    Smitty Well-Known Member

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    ..... the tie rods adjust the toe

    screw them in (or better get a proper FWA done (
     
  3. VB304

    VB304 New Member

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    Initially I thought that was the answer but there isn’t enough thread on the tie rod to get what I need.
    At a guess, to get the wheels aligned I would need to wind each tie rod in around an inch, and they are almost out of thread now. If I took the locking nut off I might get close but I can’t see that being a good idea..
    Any other ideas?
     
  4. Ccoastcalais

    Ccoastcalais Active Member

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    Cut 10mm off the end of each rack end. That should stop it bottoming out on the tie rods. Leave the locking nut on the rack end when you cut them them, then remove them after the cut to clean the thread.
     
  5. VB304

    VB304 New Member

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    I get what you mean mate but the tie rod end has screwed all the way on to the steering rack end and now there’s no more thread visible.

    If I don’t have any luck I could cut the tie rod end down but I’ll lose the square bit that the spanner goes on when adjusting. Also I’d have to make sure there’s plenty of thread left inside.
    When I bought the new rack it sounded like a straight forward swap but possibly not.

    Thanks for the help anyway.
     
  6. Ccoastcalais

    Ccoastcalais Active Member

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    I know what you mean now, don't cut the tie rods & definitely utilise the lock nut or it will unwind itself. My only other suggestion would be to take a trip to bursons or repco & see if the aftermarket ones have more thread compared to the current one.
     
  7. delcowizzid

    delcowizzid on holiday

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    Screw your rack ends into it
     
  8. Ccoastcalais

    Ccoastcalais Active Member

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    There could be 2 listings for your model as well. 1 for manual steering & one for power steering. Check both types for best compatibility.
     
  9. immortality

    immortality Administrator Staff Member

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    IF I'm not mistaken the racks widths are the same, what changed for the cars with the wider wheel tracks are the rack ends or inner tie rods (as they are referred to in the pic below).

    See drawing below (random interweb pics)
    [​IMG]

    You need to remove part number 18 and get the correct one for your model.
     
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  10. VB304

    VB304 New Member

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    Righto, I’ve got some ideas now.
    I’ll head down to Bursons and see what they’ve got listed.
    I can take the boot off the rack as well and see if there’s any adjustment in there.
    Thanks for your help and time lads, much appreciated!
     
  11. VK SL 3800

    VK SL 3800 Well-Known Member

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    As immortality said, All the racks ends have the same thread but VR/VS are a bit longer in the overall length to suit the wider track.
    Your original ones will screw in and work fine, i did this on one conversion.
    You can also buy VN/VP rack ends, these are the same length as VB-VL.

    I noticed that the VN/VP ones had the same size ball joint/nut design as VR/VS where as the original ones i think were slightly smaller but definitely same size thread.
     
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  12. vc commodore

    vc commodore Well-Known Member

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    Remind me never to go to your shop where you work.....This is illegal and down right bodgy.....
     
  13. vc commodore

    vc commodore Well-Known Member

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    VB through to VS K-frame are identical in the width, providing you get a V8 VN to VS K-frame....The VN to VS (possible VL to) 6 cyl engine mounts are different to the VB to VK engine mounts at the K-frame.

    The difference is where the rack bolts up on the K-frame....VB to VH (I think) rack mounting points are in a different spot to the later rack mounting points. So it maybe a case of getting a VB to VH (I think) rack, getting a competent welder to re position the rack mounting points on your current K-frame and going from there. This also may require approval from your local rego authority, Or alternatively get an earlier K-frame.

    Going back about 3 years ago, I put a VS V8 K-frame into a VLV8....Originally I used a VC one but found the rack mounting points were different, hence using the VS one. The VC one went into a VS which in turn was used as a burnout machine, so the rack modifying didn't worry the owner, nor traffic/insurance mob
     
    Last edited: Mar 24, 2018
  14. Ccoastcalais

    Ccoastcalais Active Member

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    The ball joint end screws into your rack. There is no adjustment there.
     
  15. Ccoastcalais

    Ccoastcalais Active Member

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    Okay, I'll keep that in mind. Thanks!
     
  16. gtrboyy

    gtrboyy Well-Known Member

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    Usually just swapped over tie rods although if that doesn't work the rack ends.
     
  17. Lacksballs

    Lacksballs Active Member

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    Does it really matter if you have 50mm or 60mm of tie rod screwed into a tie rod end? If the vehicle is engineered Im guessing that he would be happy with 20mm????
     
  18. vc commodore

    vc commodore Well-Known Member

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    Still cutting the rack end, which is bodgy
     

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