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Thread: 4 link rose joints??

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    Mechanic 5tox's Avatar

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    4 link rose joints??

    I'm perhaps being a little thick but i need a little advice regarding rose joint on my 4 link kit.

    I bought the body boxes and radius arms second hand and acquired a separate set of axle brackets later on so a bit of a mismatch,
    a have determined that i need rose joint to connect the radius arms to the axle brackets but there are so many i don't know where to begin.

    The threaded tube on the end of the radius arm accepts a 14mm bolt (albeit the thread is finer so i cant wind it in) would this be 5/8UNF?
    The distance between the axle bracket holes is approx 31 cm and the bolt holes accept an M12 bolt (which i think is 1/2")
    So i thought i needed a 5/8 x 1/2 rose joint, but then i need to space it out as its too narrow...

    I then found something called a misalignment spacer but if i use these it will reduce the bolt size and i also need something that perfectly fills the 31cm gap

    Can anybody advise what setup they have on their car?
    ive managed to get myself proper confused

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    Pole Position Decade Plus User meXEco's Avatar

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    Re: 4 link rose joints??

    Pretty sure when i did mine there were small t shaped inserts which went into either side of the rose joint so they filled the axle bracket perfectly-and yes reduced the size of bolt required.

    Like this-please note not correct size just for illustration you'll need to work out thickness req'd.

    https://www.ebay.co.uk/itm/1-2-x3-8-...cAAMXQxzZRfPAo
    Last edited by meXEco; 13-09-2018 at 21:39.


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    Spanner Monkey davemk1's Avatar

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    Re: 4 link rose joints??

    The threaded tube on the end of the radius arm accepts a 14mm bolt (albeit the thread is finer so i cant wind it in) would this be 5/8UNF?
    5/8unf is too big. 9/16unf is more like it and I believe the front anti roll bar chassis bolts are this thread.
    Worth a try

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    Spanner Monkey davemk1's Avatar

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    Re: 4 link rose joints??

    On second thoughts, 9/16 to me seems a little small and curiosity got the better of me so I've just been out in the garage and mine are indeed 5/8unf! Not saying yours would be the same of course. Can't think of any bolts on the car of that size that you could try in the bars
    Last edited by davemk1; 13-09-2018 at 22:05.

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    Mechanic 5tox's Avatar

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    Re: 4 link rose joints??

    sorry ive just been and double checked and the bolt that almost fits (other than the incorrect thread) is 15.8mm

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    Re: 4 link rose joints??

    Quote Originally Posted by 5tox View Post
    sorry ive just been and double checked and the bolt that almost fits (other than the incorrect thread) is 15.8mm
    so 5/8 inch

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    Mechanic 5tox's Avatar

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    Re: 4 link rose joints??

    Im way too young to use imperial measurements, i really should print out a conversion chart

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    Re: 4 link rose joints??

    Most rose joints on 4 link kits are 1/2 inch x 5/8. 1 misalignment spacer either side slotted into either side of the rose and the 1/2 inch diameter bolt through the axle bracket. These bolts are a little fiddly sometimes to install, a taper on the end of the bolt sometimes helps to align things.

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