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Thread: Bmw e34 engine swap

  1. #1
    Join Date
    Nov 2017
    Location
    Dallas
    Posts
    1
    My Cars
    1992 Bmw 525i

    Bmw e34 engine swap

    Noob! I currently own a 1992 bmw 525i with the m50 motor (auto trans) in it but it has electrical problems. I recently was able to purchase a 2001 325i that I believe has the m54 engine (auto trans) in it from a friend who had wrecked it. I am going to have a engine swap done but I'm not sure if this swap will be fairly simple or if id be better of selling both engines and parting out the 325i then purchasing a new motor for the e34. Thoughts? Concerns?

  2. #2
    Join Date
    Jun 2017
    Location
    Chicago
    Posts
    295
    My Cars
    1995 540i & 1996 328i
    It will mostly be a matter of electronics, which if you have the full harness and computers will be mostly straightforward.

    Things to consider,
    Will you need to maintain the emissions integrity of the new motor in your state ?
    Will you be swapping the auto trans and driveshaft?
    My e34 and E36 have identical wheelbases, idk about the E46 offhand. Think driveshaft, trans and dif not being same length.
    If trans has different mounting points I think the m54 mounts will line up

  3. #3
    Join Date
    Nov 2009
    Location
    Realville
    Posts
    1,216
    My Cars
    93 525iT,91 318i
    Your car has electrical problems and your solution is to replace the engine??

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