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Thread: 3-bolt to 4-bolt Adaptors

  1. 14th November 2011, 11:02 AM #1
    Davo
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    3-bolt to 4-bolt Adaptors

    My old 3-bolt steering box on my '83 RRC is on the way out and it seems that only 4-bolt boxes are easily available these days.

    I've been doing my reading and it looks like you can use your old hoses but you need some adaptors for the 4-bolt box. Can anyone give me details on where to get them or what to ask for? I'm in the middle of nowhere and things are very hard to get. And it's too easy to have your car off the road for weeks while you're waiting for things.

    It also sounds like the bolts through the chassis have to be replaced as well. Does anyone know the sizes? And are there any other adaptor parts I'll need?
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  2. 14th November 2011, 12:31 PM #2
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    abaddonxi
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    Can't recall, but Inc put up a post with the details a while back.
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  3. 14th November 2011, 04:24 PM #3
    Davo
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    Yeah, that would be the one in The Good Oil, but there's no mention of any specific sizes or suppliers.
    At any given point in time, somewhere in the world someone is working on a Land-Rover.
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  4. 14th November 2011, 04:46 PM #4
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    incisor
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    i got all the bits i needed to adapt it from MR Auto
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  5. 14th November 2011, 05:09 PM #5
    clive22
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    Hi,

    I've done the conversion on a county.
    The bolts through the chassis must be replaced with M12, to fit the captive bolts in the new power steering box. I went 12.9 grade socket head for strength and easier tool access, together with thick hardened washers. You'll have to measure your chassis rail thickness

    Had to pass the next size drill up to fit the new bolts, can't remember exactly what size (1/2") I think, but it was a 5 minute job.

    I had new lines made up cost couple hundred from hydraulic place more then adaptors, but the originals were 25+ years old so in they went for reliability.

    Well worth the effort, which really wasn't too bad.


    Clive
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  6. 15th November 2011, 05:21 PM #6
    Davo
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    A big thanks, guys. I emailed MR yesterday and they called back today - it's always a good thing when a company is that quick. I ordered the full Monty in the end - box, adaptors, bolts and all. It sounds like they've got the whole conversion there just waiting for people like me, which is great.

    I'll have to actually take photos this time, and put up a little tutorial, instead of just meaning to.
    At any given point in time, somewhere in the world someone is working on a Land-Rover.
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