403/404 driveshaft query
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  1. #1
    Fellow Frogger!
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    Default 403/404 driveshaft query

    Some may remember that I am building a period Peugeot single seat race car. It has been somewhat rudely christened the Dugong by some of my so-called friends.
    The query today is that when I went to make up the driveshaft, which I believe to be 403, the gearbox certainly is, the spline on the diff did not match at all. Are there some variations on numbers and coarseness of the splines? Marking on the diff head is not apparent but has quite a coarse spline compared to that on the shaft. It is a collection of bits acquired from a number of sources. Perhaps the diff is 404, but I am unsure.
    Help please!

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  2. #2
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by kiwia110 View Post
    Some may remember that I am building a period Peugeot single seat race car. It has been somewhat rudely christened the Dugong by some of my so-called friends.
    The query today is that when I went to make up the driveshaft, which I believe to be 403, the gearbox certainly is, the spline on the diff did not match at all. Are there some variations on numbers and coarseness of the splines? Marking on the diff head is not apparent but has quite a coarse spline compared to that on the shaft. It is a collection of bits acquired from a number of sources. Perhaps the diff is 404, but I am unsure.
    Help please!
    GW is the probably the best person to advise but I'll have a go....

    203 & early 403 had coarse spline axles and prop shaft.

    403B & early 404 had a kind of intermediate spline , similar diameter, finer spline prop shafts

    Late 404 had a larger diameter and fine spline prop shaft (plus a wider worm wheel)
    This is the same as the 504 BA 7-5 and the IRS diffs

    I'm on my way out, but I'll try to look my manuals later....

  3. #3
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    Yes, sounds like the shaft is 403, diff is 403b or 404. Graham Wallis will be your best guide.
    Last edited by Russell Hall; 26th December 2010 at 10:37 AM.

  4. #4
    1000+ Posts catshamlet's Avatar
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    Quote Originally Posted by kiwia110 View Post
    It has been somewhat rudely christened the Dugong by some of my so-called friends.
    , but I am unsure.
    Help please!
    Nah. I've seen the photo, looks more like a manatee.



    Mike.
    Attached Thumbnails Attached Thumbnails 403/404 driveshaft query-manateeb.jpg  
    Started out with nothing, still got most of it left.

  5. #5
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    Quote Originally Posted by robmac View Post
    GW is the probably the best person to advise but I'll have a go....

    203 & early 403 had coarse spline axles and prop shaft.

    403B & early 404 had a kind of intermediate spline , similar diameter, finer spline prop shafts

    Late 404 had a larger diameter and fine spline prop shaft (plus a wider worm wheel)
    This is the same as the 504 BA 7-5 and the IRS diffs

    I'm on my way out, but I'll try to look my manuals later....
    All the 203s 403s and 404s had the same (course) spline on the prop shaft at the rear.
    You probably have a hypoid 404 wagon shaft, which were fine spline at the rear, same as 504s.
    Graham

  6. #6
    Fellow Frogger!
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    Thanks all, the problem is now resolved when I looked a bit harder in the bits collection. I am now left to wonder what the shaft I tried was!!!

  7. #7
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    Quote Originally Posted by catshamlet View Post
    Nah. I've seen the photo, looks more like a manatee.



    Mike.
    Thanks Mike, I think!

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