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simple question regarding waterpump reverse engineering

Discussion in '308/328' started by Martin308GTB, Apr 25, 2016.

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  1. Martin308GTB

    Martin308GTB F1 Rookie

    Jan 22, 2003
    4,301
    Black Forest Germany
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    Martin N.
    #1 Martin308GTB, Apr 25, 2016
    Hello together,

    stupid me, but after I have recently rebuilt several waterpumps and now wanted to proceed with my reverse engineering and re-design I forgot to measure the most simple part of the pump.

    Therefore my question; Does anyone of you have a dismantled large bearings waterpump lying around and could forward me the exact length of the spacer between the two bearings?
    I would hate it to dismantle one of my finished pumps I have, because this would mean sacrificing the new one piece seal.

    Best Regards and many thanks in advance

    Martin
     
  2. Sigmacars

    Sigmacars Formula 3
    Silver Subscribed

    Jul 19, 2006
    1,245
    #2 Sigmacars, Apr 26, 2016
    there is a water pump shaft for sale new on e-bay for $184.00 i dont think you can make it for that in ST Steel,you can ask them for the dim you need
     
  3. SeattleM5

    SeattleM5 Formula 3
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    Jul 9, 2006
    1,266
    Kirkland, Washington
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    Ettore Palazzo
    #3 SeattleM5, Apr 26, 2016
    Last edited by a moderator: Sep 7, 2017
    Here you go my friend. Hope the old pump housing I sent you is helping in your endeavors.
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  4. Martin308GTB

    Martin308GTB F1 Rookie

    Jan 22, 2003
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    Black Forest Germany
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    Martin N.
    #4 Martin308GTB, Apr 26, 2016
    Many thanks Ettore. I'm really glad, since my calculations were half a mm off. Proof, that each housing is slightly differently cast.

    Yes, your pump housing is of great help. Thanks once more for giving it to me. Meanwhile I have modelled the outer shape in my 3D-CAD. A small drawback needed to overcome is determining the exact coordinates of the holes.
    Will need the coordinate measuring machine at my machinist's shop.

    BTW. That corrosion holes in the seal area were amazing. I wondered, what kind of acid the pre-owner had in his engine :)


    Best
    Martin
     
  5. SeattleM5

    SeattleM5 Formula 3
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    Ettore Palazzo
    #5 SeattleM5, Apr 27, 2016
    Glad the project is progressing Martin. You're doing some amazing stuff!

    Regarding the corrosion on that pump housing, . . . I was thinking the same thing. I suspect the standard coolant interval changes never took place on that car. More likely than not, that pump had been looking at the same coolant from original factory fill.

    Sent from my SM-G900V using Tapatalk
     
  6. Martin308GTB

    Martin308GTB F1 Rookie

    Jan 22, 2003
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    Black Forest Germany
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    Martin N.
    #6 Martin308GTB, Apr 28, 2016
    Thanks Ettore,
    nevertheless there would be still a way to salvage the housing. Will show it, when I am ready with my modelling work.

    This is the current , half done status of 'your' housing.

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    Best Regards
    Martin
     

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