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Thread: 4.0 v8 540i swap in 81 733i e23

  1. #1
    Join Date
    Apr 2017
    Location
    Seattle
    Posts
    4
    My Cars
    95 540i 81 E23 04 M5 98

    4.0 v8 540i swap in 81 733i e23

    I have a 4.0 v8 engine from a 530i that I did a LS3 swap on tbat had the 540i 4.0 V8 5 speed swap already done to it. But I'm trying to swap thks v8 into my 733i. I know the (diff) will hold that kind of power and I have a shop building me a custom Driveshaft to fit in it and a shop bending a pipe for my exhaust. I have the complete wiring harness and steering column with the key as well. However I sold pretty much everything else a long time ago. I want to get this car back on the streets asap. What else would I need and what are some good junkyards I can call and check up? I need the ecu tuned, and looking for custom ipad mini cluster guage it needs an ODB1 set up to work properly. I live in Seattle but am always traveling across the US in one of my cars so the location isn't a problem. Any help would be great.

    Thanks!

    Sent from my SAMSUNG-SM-G891A using Tapatalk
    Last edited by Mrcorter; 04-12-2017 at 02:08 AM.

  2. #2
    Join Date
    Dec 2005
    Location
    Melbourne, Australia
    Posts
    1,903
    My Cars
    E24, E34 x2, E36
    Sounds like a great swap. A few e28 guys are now swapping this engine into their chassis. Would make a great daily driver cruiser. Not sure about a drifter but hey why not.
    BMW’s
    90 E34 M5
    84 E24 M635csi standalone ecu with coil on plug
    94 E34 540i/6 SC 5-17psi Flex fuel/standalone ecu
    97 Z3 2.8
    97 E36 M3 euro SC still u/c


    OTHERS
    11 Audi S5 APR stg2
    19 Volkswagen Amarok V6


  3. #3
    Join Date
    Dec 2011
    Location
    Twin Cities, MN, USA
    Posts
    22
    My Cars
    1995 M3, 1985 323i Baur
    Here is a thread from a guy in Norway who put an M60B30 into a 732iA.

    http://e23forum.diskusjonsforum.no/e...0-0-asc-0.html

    Having a 90-degree V, the M60 is a wide motor. You can see in his build he had to move the brake master cylinder over to the mounting position normally reserved for a clutch master, and he seems to have swapped steering boxes as well.
    Jonathan
    ~ 2001 330i ZSP (Stahlgrau/Grau)
    ~ 1985 323i Baur TC2 (Bronzit/Nutria)
    ... and a bunch of other old BMWs (all since departed)
    http://www.totallythatstupid.com

  4. #4
    Join Date
    Mar 2006
    Location
    Sacramento, CA
    Posts
    935
    My Cars
    87 535i/84 €735i/8
    I am doing the 4.4l and 6spd conversion soon, lots of work, but the parts drop in without too much trouble.
    The thread mentioned above has lots of great pics showing how the E23 was almost made to fit a V8.
    --Jay3->Sic gorgiamus allos subjectatos nunc
    84 €735i manual, 88 528e/i
    Motronic 1 and 1.3 wiring
    Transmission & Diff gearing sheet

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