R8/10 ujoints
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Thread: R8/10 ujoints

  1. #1
    Fellow Frogger!
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    Default R8/10 ujoints

    I need to modify some ujoints for the strong box I'm putting together. According to Steve Swan they are staked but they don't look like the regular staking method. How do you get them apart? Does the clip need to be cut out?

    Also the replacement centre that Steve uses, a PUJ2211 (24x63.4) doesn't seem to be easy to obtain here, what have others used? I can go with a 24mm x 63mm and as I'll have to machine circlip grooves it won't matter that it's 0.4mm smaller.

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    Any suggestions on where the resplining can be done? A transmission workshop should be able to point me in the right direction.
    R8/10 ujoints-dsc_0138.jpg

  2. #2
    1000+ Posts alan moore's Avatar
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    Colliers used to do get these unis resplined to suit the 16 TS diff and gears fitted to 330 gearboxes. Give them a call, they may even have some already machined, or hopefully tell you who did it for them.
    '56 Renault 4CV (16TS Power)
    '62 Renault Dauphine Gordini
    '82 Renault Fuego GTX
    '89 Renault Alpine GTA V6 Turbo
    '02 and '03 Renault Clios 1.4L
    '13 Renault Megane RS265 Trophee+

  3. #3
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    Good plan, I'll call them on Monday

  4. #4
    Member dauphproto's Avatar
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    The clips are Nadella type
    Use a 10mm punch to punch down the bump in the centre and they will lift out they need to be hit hard and will displace the joint in the process
    A 24mm x 63mm centre will be fine will be fine I use an expanding mandrell through the cup holes and an internal grooving tool in the lathe the awkward bit is finding the theoretical centre and moving out 31.5mm to cut the grooves (top tip start the grooves slightly undersize and build the joint you can go for a second cut or until the joint is snug
    )
    Well if it was easy everybody would do it

  5. #5
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    Quote Originally Posted by c.lees View Post
    I need to modify some ujoints for the strong box I'm putting together. According to Steve Swan they are staked but they don't look like the regular staking method. How do you get them apart? Does the clip need to be cut out?

    Also the replacement centre that Steve uses, a PUJ2211 (24x63.4) doesn't seem to be easy to obtain here, what have others used? I can go with a 24mm x 63mm and as I'll have to machine circlip grooves it won't matter that it's 0.4mm smaller.

    Any suggestions on where the resplining can be done? A transmission workshop should be able to point me in the right direction.
    Click image for larger version. 

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    From what I read in the big box article the reason for the big box conversion was to strengthen the week point of the spider gear set up in the 330 trans because it is smaller and had a hole in causing it to sheared off where as the big box one was solid . The other benefit was a change of gearing to the 3.73 range instead of the 4.01 range and the guts are a little sturdier .
    My question is would it be easier to have the solid larger spider cut down and have the out side splines cut on it the size of the original splines so the original U-joint coupler can be used ?

    Any thoughts ???
    Manic GT .

  6. #6
    Fellow Frogger! Ross's Avatar
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    When Frans and I did the big box conversion for the Dauphine I used a BMW cross in the original joint. It was a solid cross (does have the hole in the centre) so a lot stronger. Because we used a 16ts diff I had the inside spline "spark eroded" to fit. This was done by Auckland Gear Cutting Services. Im sure you will have something similar in Sydney. The only other modification I made was to insert a rubber button in the inside end of the driveshaft to align the joint

    That was about 12 years ago and I have never had any issues.
    Ross:

    1989 Alpine GTA Twin Turbo
    1963 Renault R8
    1996 Peugeot 106 S16
    1967 NSU Prinz 1200TT
    1989 Peugeot 205 GTi

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