Vacuum Question

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  • maniacmatt
    E30 Addict
    • Feb 2007
    • 483

    #1

    Vacuum Question

    So I am swapping a 1990 m20b25 into my '84 325e but you probably already know that.

    Anyway the engine did not come with the vacuum lines from the booster to the throttle body so I went onto bmwfans.info looked at the parts diagram and picked up this from a wrecker.



    However now that I look at my intake boot I have no place for that little plastic Y to connect.



    As well there is only one connector on the side of my throttle body.



    So this brings me to the conclusion that the vacuum system on a 1990 (my engine) and a 1989 (wrecker parts) are different.

    So what do I need to make this work, part numbers and any other help would be hugely appreciated.
  • nando
    Moderator
    • Nov 2003
    • 34827

    #2
    there is a different intake boot that is used with that vacuum hose you have. mine is a 10/90 build date and it has the same thing.
    Build thread

    Bimmerlabs

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    • maniacmatt
      E30 Addict
      • Feb 2007
      • 483

      #3
      Would you mind taking a picture of yours

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