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Thread: Front Propshaft - continued

  1. 8th August 2016, 01:45 PM #1
    ChrisS
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    Front Propshaft - continued

    OK let me ask it this way - Does anyone know how long the front propshaft on a S3 is supposed to be?
    I have pulled two seperate ones - mine (too short) is 590 mm when compressed.
    It is now too short with parabolic springs.
    Another propshaft out of a seemingly identical S3 is 705 mm when compressed. It is too long.
    That is a huge variation 115 MM's. What gives?
    They both extend about 25 to 30 mm.
    My only solution is looking to be having my shaft extended - the missus perked up when I mentioned it.
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  2. 8th August 2016, 02:53 PM #2
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    S3ute
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    Six?

    Hello from Brisbane.

    No doubt the experts will give you an accurate answer but I was wondering if the longer prop shaft might have come from a six cylinder truck? I believe the gearbox is set further back requiring a longer front shaft and shorter rear shaft.

    Cheers,
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  3. 8th August 2016, 05:17 PM #3
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    Dark61
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    Prop shaft length

    Salisbury diffs and series III 88"



    this may help?
    cheers,
    D
    1957 88 Petrol (Chumlee)
    1960 88 Petrol (Darwin)
    1975 88 Diesel (Mutley)
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  4. 8th August 2016, 08:04 PM #4
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    Homestar
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    Yep, different engines use different shafts. The 6 cylinder front shaft is longer as the gearbox sits further back. While I'll have my parabolics fitted shorty, I won't have a gearbox in for quite some time to assist with any measuring of things sorry. I'll go measure my 6 cylinder front shaft - my guess is it will be the 705mm one you have measured.

    I'll let you know in 5....
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.
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  5. 8th August 2016, 08:07 PM #5
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    Homestar
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    Yep, close enough - 710mm for my front shaft from a factory 6.

    I'll be getting new shafts made front and rear when everything's all bolted up so I'll go off what I measure.
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.
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  6. 9th August 2016, 09:46 AM #6
    ChrisS
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    propshaft

    Interesting and thanks for that. I didn't mention in this post, but I have a Holden conversion. I'm not sure if the gearbox would have been moved back to accomodate that.
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  7. 9th August 2016, 10:52 AM #7
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    Homestar
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    I wouldn't have thought so - if it was a factory 6 originally, then you should already be running the longer shaft. If it was a 4 cylinder originally, then unless the firewall was modified, the engine just sits further forward - the nose of the water pump will be quite close to the radiator. In this case, the gearbox should still be where the factory it, but would use the shorter shaft.
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.
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