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Thread: Early euro E24s differences

  1. #1
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi

    Early euro E24s differences

    Hi guys.

    The question is regarding a 10/76 donor and a 1/78 patient.

    I see on the OEM that the (eg. fuel pump assembly from the 1976) says up to 9/77. My question is are they physicaly interchageable, just updated versions?

    Also the electrics, would everything just bolt in place if i just transfer them to the 78 shell?

  2. #2
    Join Date
    Sep 2009
    Location
    Denver, Colorado
    Posts
    2,876
    My Cars
    1985 535i, 1980 635CSi
    I think they are the same but cannot confirm. Euro to US spec may have differences since early euro cars only have one external fuel pump.

  3. #3
    Join Date
    Sep 2010
    Location
    Hagerstown,MD
    Posts
    1,027
    My Cars
    1984 Euro 635
    BMW part# 16141178751 supercedes all applications from 1976 through late '87 IIRC.
    '84 Euro 635
    '88 M6 (Gone but not forgotten)

  4. #4
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    Here is the fuel pump example


    Screenshot_20180124-180323.png

  5. #5
    Join Date
    Apr 2008
    Location
    Scottsdale, Arizona
    Posts
    4,885
    My Cars
    81 euro 635, 4.4 X5
    Diagram is exactly as the fuel supply on my81 euro including the sending unit
    81 Euro undergoing total nut and bolt restoration
    pictures at: flickr.com/photos/bertsphotos

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