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Thread: E23 auto transmissions

  1. #1
    Join Date
    Dec 2017
    Location
    Jackson Mi
    Posts
    62
    My Cars
    E21, E30, E23

    E23 auto transmissions

    Looking for a little more info on the automatic transmission usage on the e23. In the US from what I understand it was a 3 speed until 83 then went to a 4 speed. What year did it upgrade to electronic?

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  2. #2
    Join Date
    Jun 2010
    Location
    TX
    Posts
    4,487
    My Cars
    1983/84/85 745i

    Thumbs up

    745i received it 05/83 with the introduction of the 3.4L Turbo Motronic.

    US spec cars? Early 1985 production, probably for late summer launch. I do not have exact month and year for you.
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  3. #3
    Join Date
    Apr 2004
    Location
    Hamburg, NY USA
    Posts
    1,583
    My Cars
    e23, e32, e34, e39
    My US 4/85 came with the non EH. My 5/86 (titled as an 87) had it.

  4. #4
    Join Date
    Dec 2017
    Location
    Jackson Mi
    Posts
    62
    My Cars
    E21, E30, E23
    Anyone have a working 4 speed non EH they want to sell?

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  5. #5
    Join Date
    Jun 2010
    Location
    TX
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    My Cars
    1983/84/85 745i

    Thumbs up

    Quote Originally Posted by Scottr09 View Post
    Anyone have a working 4 speed non EH they want to sell?

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    What is not working on yours?

    I would not trust a 35 year old transmission in my car. The difference in shift quality between a reman and used is day and night. Those internal seals are comically dried out and rock hard.
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  6. #6
    Join Date
    Dec 2017
    Location
    Jackson Mi
    Posts
    62
    My Cars
    E21, E30, E23
    I pulled it out and was going to swap it with another 4hp22 I had but the output shaft and flange were different. Mine would not start in drive unless I put it into first gear then it would shift fine once moving. I was hoping to find a better candidate for a rebuild or something to at least get me going through the summer.

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  7. #7
    Join Date
    Jun 2010
    Location
    TX
    Posts
    4,487
    My Cars
    1983/84/85 745i

    Thumbs up

    Some had Ujoints and some flex disc...you sure the output shafts are different? I put a 4HP24 V12 output in my 4HP22 as it is thicker and has an additional oil feed for cooling.
    Last edited by Hit Man X; 07-05-2018 at 01:36 PM.
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  8. #8
    Join Date
    Dec 2017
    Location
    Jackson Mi
    Posts
    62
    My Cars
    E21, E30, E23
    Update: I found a parts car sitting in the weeds in northern Michigan. It's an 85, mine is 84, I got it home and pulled the trans. It all looks like it will bolt up but I will also use the parts cars driveshaft. It has the u joint mine had the flex disc.

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  9. #9
    Join Date
    Jun 2010
    Location
    TX
    Posts
    4,487
    My Cars
    1983/84/85 745i
    Front half of the shafts is the different point. You can just toss it all in and go... I would not toss in a 35 year old trans, but that is me.
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  10. #10
    Join Date
    Aug 2018
    Location
    Chicago, IL, USA
    Posts
    5
    My Cars
    '85 735i, '75 CS
    Scottr09, you mentioned parts car - can you "part" with one ABS wheel sensor?

  11. #11
    Join Date
    May 2013
    Location
    Killingworth, CT
    Posts
    562
    My Cars
    '84 733i, 01 X5 00 750iL
    I am getting a running, driving 84 733i which has the non EH 4 speed auto. Car will be here in a couple weeks. The trans will be available - it is getting manual swapped using parts from my other e23 that will become a parts car. If the trans you sourced does not work out let me know.
    Steve H.

  12. #12
    Join Date
    Dec 2017
    Location
    Jackson Mi
    Posts
    62
    My Cars
    E21, E30, E23
    Quote Originally Posted by coupesport View Post
    Scottr09, you mentioned parts car - can you "part" with one ABS wheel sensor?
    Way to sneak that in here! I will send you a PM when I get back in town with the parts car. Are they the same all the way around? If so I will have 4 available.

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  13. #13
    Join Date
    Dec 2017
    Location
    Jackson Mi
    Posts
    62
    My Cars
    E21, E30, E23
    Quote Originally Posted by BONDOSPECIAL View Post
    I am getting a running, driving 84 733i which has the non EH 4 speed auto. Car will be here in a couple weeks. The trans will be available - it is getting manual swapped using parts from my other e23 that will become a parts car. If the trans you sourced does not work out let me know.
    It is up and driving! Thanks for the offer I'll keep this in mind if I run into any issues.

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