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Thread: Corse I CV joints

  1. #1
    SEC Member hollytree's Avatar
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    Corse I CV joints

    Hi all
    Great day at Stoneleigh yesterday... until I went home.
    Loud bang from rear and on rolling slowly a lot of drag.
    Nothing obvious and nothing rubbing.
    Drove a bit more and all OK. Got to exit of park and few more bangs. Still nothing obvious, so drove off taking thing as easy.
    Got as far as Northampton junction of M1 and bangs started again but lose worse. Crawled on M-way and got a lorry to pick us up and take home.
    Will go and start looking shortly, but I think it might be CV joint breaking up.

    Is there any history of CV joint failures on Corse I.
    I have 17" rears and the offset angle on the left shaft looks about 30deg.
    Is there a limit of how much offset the driveshaft can comfortably operate at?

    Any other ideas?

    Steve

  2. #2
    SEC Member hollytree's Avatar
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    Re: Corse I CV joints

    Car on stands at rear.
    Took left drive shaft off. Nothing obvious, no broken bits.
    Rear right wheel all still connected, no noise, spins freely.
    Left hub all OK, spins freely.

    This all starting to point to left drive shaft and CV joint(s).

    Do I just order new CV joints and fit them.
    Alfa 164 ones?
    Should I be looking at anything special?

    Steve

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    Site Supporter ProtoTipo's Avatar
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    Re: Corse I CV joints

    Quote Originally Posted by hollytree View Post
    Do I just order new CV joints and fit them.
    Alfa 164 ones?
    Should I be looking at anything special?

    Steve
    Does anything bind on either shaft, lengthways through the full suspension travel with the spring removed?

    If you need new CVs I would think any known, good quality make would be fine.

  4. #4
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    Re: Corse I CV joints

    The normal Corse I set up is Ford outer, Alfa inner. I have part numbers but not to hand for a day or two.

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    Re: Corse I CV joints

    Was there any evidence that the boot had wound up indicating that the outer part if the joint has revolved more than the inner?

  6. #6
    SEC Member hollytree's Avatar
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    Re: Corse I CV joints

    No evidence of over twisting when look at rubber covers.
    The outer felt "notchy". I took the circlip off the drive shaft and slid the shaft out.
    The inner and out cage and all the balls dropped out.
    No broken bits or obvious signs of damage.
    Placed the the balls back in from the outside (is it all meant to come apart)
    Put it all back in the main housing, one ball rolled off.
    It is all in place now, but with only 5 balls and jammed rock solid.
    Cant get it apart now!

  7. #7
    SEC Member hollytree's Avatar
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    Re: Corse I CV joints

    Quote Originally Posted by john View Post
    The normal Corse I set up is Ford outer, Alfa inner. I have part numbers but not to hand for a day or two.
    John
    Thanks
    When you send the PNs i will do all 4.
    Ta
    steve

  8. #8
    SEC Member hollytree's Avatar
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    Re: Corse I CV joints

    Are there any known problems with Corse I rear geometry.
    Are the CV alignment angles OK with 17" wheels
    Normal position left and right below
    steve

    Click image for larger version. 

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    Last edited by hollytree; 08-05-2018 at 06:29.

  9. #9
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    Re: Corse I CV joints

    I don't think you have a problem because you are running 17" wheels because the rolling diameter is not radically different to 15" or 16". What ride height do you have under the chassis at the rear? It's not jacked right up is it?

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    Re: Corse I CV joints

    Quote Originally Posted by hollytree View Post
    Are there any known problems with Corse I rear geometry.
    Are the CV alignment angles OK with 17" wheels
    steve
    The Corse CV's have plunge at either end, if the shaft is to long or too short the cage and balls can move beyond their operating range and cause the joint to baulk or jam. I would expect the cage to be damaged.
    Yes, you can assemble and disassemble the CV's once they are off the shaft. There is a right way and a wrong way to reassemble them though, the grooves in the two halves need to opposed to each other to allow the CV to work as it should ie rotate and plunge. If you assemble them 1/6th of a turn out they will lock and not rotate.
    Wheel diameter should not be an issue unless the engine is mounted ridiculously low which I do not think it is. I think you need to check the distance between the flanges vs the length of the drive shaft with the CV's in their central position.
    "You can lead a horse to water, but a pencil must be lead"
    Stan Laurel

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