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Thread: 911 engine case Revisions

  1. 10-17-2010, 07:45 AM #21
    beginner
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    YEAR_Type__Serial #___Left Case ____Right Case__Build #__Date
    1968 901/17 no serial -------------- 901.101.102.0R 11771 AL
    Why did you leave the Left Case blank?
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  2. 10-17-2010, 09:10 AM #22
    davep
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    That was the highest build # I have for the aluminum case with any info; but did not have complete info. As stated there appears to be no serial # on the case either. So many people report the casting # for only one side; most of them think it is a serial #.
    Porsche Historian, contact for Kardex & CoA-type Reports
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  3. 10-17-2010, 02:18 PM #23
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    I meant casting # for the left case. (e.g. 901.101.101.0R ?)
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  4. 10-17-2010, 02:57 PM #24
    davep
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    It was not provided.
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  5. 10-17-2010, 03:45 PM #25
    210bhp
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    Quote Originally Posted by beginner View Post
    AFAIK, that crankcase had a stud spacing of 83mm (3mm more than std), unique to the 3.0-liter RS and RSR.
    No, my 2.7RS has those numbers. Original Silumin case

    Regards
    Mike
    RS#1551(sold)
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    73E (home after 25 years) and sold again
    Early S reg. #681
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  6. 10-17-2010, 05:39 PM #26
    advtracing
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    good info

    But

    "901.101.101.5R 901.101.102.4R
    Both case halves changed.This was used in 1973"

    my car ,german 72 july build , has numbers match case using 5r/4r
    John Gausden
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  7. 10-17-2010, 06:25 PM #27
    mike curnow
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    afaik

    Is this the secret handshake or something? AFAIK?



    Quote Originally Posted by beginner View Post
    AFAIK, that crankcase had a stud spacing of 83mm (3mm more than std), unique to the 3.0-liter RS and RSR.
    Mike
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  8. 10-17-2010, 07:39 PM #28
    davep
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    Great John, just what we need.
    Mike, no secret handshake AFAIK; As Far As I Know, a great little qualifier.
    Porsche Historian, contact for Kardex & CoA-type Reports
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  9. 10-28-2010, 12:27 PM #29
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    Quote Originally Posted by 210bhp View Post
    No, my 2.7RS has those numbers. Original Silumin case

    Regards
    Mike
    Maybe your crankcase has got a stud spacing of 83mm. Have you ever actually measured it?
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  10. 12-04-2010, 04:40 AM #30
    Mikael Berg
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    Hi,
    I loocking at bying this case,is this a r case? 1968 901/02 4081419 901.101.101.1R 901.101.102.1R 15415 nr is 4081419.
    Kind regards
    Micke
    Last edited by Mikael Berg; 09-28-2014 at 11:48 AM.
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