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Thread: What is this engine, number 4080900AI?

  1. 09-01-2012, 11:47 PM #1
    911Bangkok
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    What is this engine, number 4080900AI?

    Dear all,
    According to the redbook, 4080900 is 1968 S engine.
    The number on this magnesium case has 2 more letters at the end.
    I think they are AI or could be A1.
    Could this be the engine came with sporto?
    Thanks for your help.
    Burint
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  2. 09-02-2012, 12:36 AM #2
    preS
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    It's most likely AT AuschTausch. Factory replacement / rebuild engine, most often under warranty.

    Richard
    Last edited by preS; 09-02-2012 at 12:40 AM.
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  3. 09-02-2012, 04:57 AM #3
    edmayo
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    Interesting that it has a pull type clutch installed and a 915 gearbox nearby. And what is with those heat exchangers? The tops are just lopped off and capped.
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  4. 09-02-2012, 07:16 AM #4
    911Bangkok
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    Thanks guys for clarification on the letter "AT"
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  5. 09-02-2012, 08:05 AM #5
    preS
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    Quote Originally Posted by edmayo View Post
    Interesting that it has a pull type clutch installed and a 915 gearbox nearby. And what is with those heat exchangers? The tops are just lopped off and capped.
    They probably didn't need heating in Bangkok?

    Richard
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  6. 09-02-2012, 08:23 AM #6
    72targa
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    Quote Originally Posted by 304678 View Post
    It's most likely AT AuschTausch. Factory replacement / rebuild engine, most often under warranty.

    Richard
    This a great tidbit of Porsche history. I had never read this before.
    Peter Kane

    '72 911S Targa
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