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Thread: Need Help - Is this 2.0 or 1.8 M10 Engine

  1. #1
    Join Date
    Nov 2016
    Location
    Calgary Canada
    Posts
    25
    My Cars
    1981 BMW 320i E21

    Need Help - Is this 2.0 or 1.8 M10 Engine

    20180315_234647.jpg20180320_194429.jpg
    I am on the hunt for a 2.0 litre crankshaft for my M10 build and a fellow member living relatively close has an M10, that he is not 100% sure if it's 1.8 or 2.0 litre. He has sent me these two pictures. One picture has an engine number: 05442962, which I think says it's an M10, serial number 544, made in Munich, the last three digits should say month & year of manufacture from what I have read. Am I missing something? Don;t think it would have been made in Sept 1962. What I read on 2002faq was: 0 is M10, next 3 digits are serial number, 5th digit is factory and last 3 digits are month year.
    Also the picture doesn't show an engine code - which seems weird. If it was there it would say 20 or 18 for displacement - Correct?

    The other picture of the block looks to be 1269500 or 1269588?

    Any ideas what engine this is or where else to look to figure out if it's 2.0 litre?
    Thanks!

  2. #2
    Join Date
    Sep 2007
    Location
    Houston, Tx
    Posts
    1,978
    My Cars
    '78 320i
    If he has the intake I could tell right away.

  3. #3
    Join Date
    Feb 2009
    Location
    District Nine
    Posts
    17,984
    My Cars
    sold 78 BMW 320i
    2.0 crank has 80 mm stroke, 1.8 crank has 71 mm stroke.
    Tbd

  4. #4
    Join Date
    Nov 2016
    Location
    Calgary Canada
    Posts
    25
    My Cars
    1981 BMW 320i E21
    Update - couple more pics - is it a 1.8 or 2.0?
    20180321_181308.jpg20180321_181108.jpg

  5. #5
    Join Date
    Dec 2014
    Location
    So Cal
    Posts
    303
    My Cars
    1983 BMW 320iS
    Looks like it's stamped 1982?

    If so, a 1.8

  6. #6
    Join Date
    Nov 2016
    Location
    Calgary Canada
    Posts
    25
    My Cars
    1981 BMW 320i E21
    Thanks SoCalE21 - that's what I was thinking: 82 24B = Feb 24 1982

  7. #7
    Join Date
    Oct 2004
    Location
    Ohio
    Posts
    6,763
    My Cars
    E21 320i, e39 540i/6
    aluminum engine mounts means 1.8.

    '81 320i turbo | t25, 931 CIS, 240hp, 13.92@100mph | 2.2L m10 Turbo Build | My E21 Videos |

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