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Thread: 1972-1981 (E12) knowledge base

  1. #51
    Join Date
    Jul 2008
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    Cypress, Tx
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    See signature...
    Coincidence.

    Did you go back with the E12 pump and fan and clutch,
    or swap out to the E28 and later style spin on set up?
    Last edited by swatterssr; 04-18-2014 at 02:40 PM. Reason: More info?
    His disciple,
    Sherman, Sr.

    TexFest LSB&F IV... Oct. 12-13-14, 2012

    '79 528i - 1st 5er
    '86 535i - Snob (My DD)
    '88 ///M5 - The Beast
    '91 ///M5 - ///M-unization Donor
    '92 ///M5 - Her DD
    '95 525iT - ///M Donee
    BMW POWER bi-turbo

  2. #52
    Join Date
    Nov 2009
    Location
    Newark, NJ, USA
    Posts
    17
    My Cars
    1974 Bavaria, 1978 530i
    No I purchased a E12 Pump and a E28 Fan Clutch, that worked out fine.

    - - - Updated - - -

    Now I just started realizing a very distinct ticking sound that is coming out of the valve cover. I am not sure if this is just how these engines should sound. I will take a video and upload it...
    My next move is replacing the power steering pump.
    My front shock are leaking, I would like to replace them but the setup I would like is a bit lower in the front and higher in the back. I was thinking on getting lowering springs for the front and normal ones for the back and installing Bilstein Sport Shocks, since they are stiffer. Right now I am running 17X10 in the back and 17X8.5 in the front and they touch the fender lip. What do you recommend?

  3. #53
    Join Date
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    My Cars
    See signature...
    Adjust the valves.
    His disciple,
    Sherman, Sr.

    TexFest LSB&F IV... Oct. 12-13-14, 2012

    '79 528i - 1st 5er
    '86 535i - Snob (My DD)
    '88 ///M5 - The Beast
    '91 ///M5 - ///M-unization Donor
    '92 ///M5 - Her DD
    '95 525iT - ///M Donee
    BMW POWER bi-turbo

  4. #54
    Join Date
    Nov 2009
    Location
    Newark, NJ, USA
    Posts
    17
    My Cars
    1974 Bavaria, 1978 530i
    Great thank you, Any where I can find how to do the procedure and the tools I need...

    - - - Updated - - -

    Also today something happen were I to her up to 80mph on the highway and when I stopped at a stopped light the oil engine light came on and the car felt like it wanted to turn off, it happen two times but then I drove away and everything was fine. Any Idea. I was reading online that this may be that my bearings I hope not... : (
    Also the she is really spending spending a lot of gas.

    Please help!

  5. #55
    Join Date
    Nov 2009
    Location
    Newark, NJ, USA
    Posts
    17
    My Cars
    1974 Bavaria, 1978 530i
    Looks like I am in need of a Cylinder Head Gasket replacement, I have some oil coming out all around the engine block... : (
    What does this mean the car only has 107miles on it and it is already leaking oil that is landing on the exhaust and burning it. I Looked around on the internet and everyone that has done a cylinder head gasket replacement also does a head resurface and refinishing I am not sure what this is so I am not sure if I could do the job my self. I certainly don't want to pay $2500 for the job...

    What would cause this to happen and what is the damage, I am driving the car to work everyday about 39k round trip should I not be driving it.
    I paid $6500 for the car, over all the car is perfect and beautiful. Did I just paid to much for this car?

    Thank you for any help you can provide
    Last edited by BavariaRR; 05-11-2014 at 08:18 AM.

  6. #56
    Join Date
    Jul 2008
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    You sure it's not the valve cover gasket?
    His disciple,
    Sherman, Sr.

    TexFest LSB&F IV... Oct. 12-13-14, 2012

    '79 528i - 1st 5er
    '86 535i - Snob (My DD)
    '88 ///M5 - The Beast
    '91 ///M5 - ///M-unization Donor
    '92 ///M5 - Her DD
    '95 525iT - ///M Donee
    BMW POWER bi-turbo

  7. #57
    Join Date
    Nov 2009
    Location
    Newark, NJ, USA
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    17
    My Cars
    1974 Bavaria, 1978 530i
    I don't think so. I replaced the oil pan gasket thinking that that it was were it was leaking from but after power cleaning the engine I saw where it was coming out of. See the pic below.
    Is this bad? I got the car now 2 months, should I take it back to the dealer where I got it and fit it? Is this going to cost me an arm and a leg?
    Any help will be nice.

    BMWEngine.png

  8. #58
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    Cypress, Tx
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    274
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    See signature...
    I doubt it's a head gasket.
    More than likely a seal or connecting part gasket.
    His disciple,
    Sherman, Sr.

    TexFest LSB&F IV... Oct. 12-13-14, 2012

    '79 528i - 1st 5er
    '86 535i - Snob (My DD)
    '88 ///M5 - The Beast
    '91 ///M5 - ///M-unization Donor
    '92 ///M5 - Her DD
    '95 525iT - ///M Donee
    BMW POWER bi-turbo

  9. #59
    Join Date
    Sep 2014
    Location
    Ga
    Posts
    2
    My Cars
    1978 633csi
    Hey I have a 78 e24 which is based off the e12 platform and when it cold outside or the engine is just starting up its hesitant and runs rough like when u accelerate u have to like hit the gas pedal twice real quick to get it to accelerate but once it has warmed up it seems to run fine

  10. #60
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    Quote Originally Posted by nicknjg88 View Post
    Hey I have a 78 e24 which is based off the e12 platform and when it cold outside or the engine is just starting up its hesitant and runs rough like when u accelerate u have to like hit the gas pedal twice real quick to get it to accelerate but once it has warmed up it seems to run fine
    Do you have an idle air valve on the E24?
    His disciple,
    Sherman, Sr.

    TexFest LSB&F IV... Oct. 12-13-14, 2012

    '79 528i - 1st 5er
    '86 535i - Snob (My DD)
    '88 ///M5 - The Beast
    '91 ///M5 - ///M-unization Donor
    '92 ///M5 - Her DD
    '95 525iT - ///M Donee
    BMW POWER bi-turbo

  11. #61
    Join Date
    Sep 2014
    Location
    Ga
    Posts
    2
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    1978 633csi
    I believe so its got 2 or 3 of them to my knowledge

  12. #62
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    Oct 2014
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    mr
    Posts
    4
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    m3
    How much do E12's weigh?

  13. #63
    Join Date
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    Cypress, Tx
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    See signature...
    Last edited by swatterssr; 10-07-2014 at 02:42 AM.
    His disciple,
    Sherman, Sr.

    TexFest LSB&F IV... Oct. 12-13-14, 2012

    '79 528i - 1st 5er
    '86 535i - Snob (My DD)
    '88 ///M5 - The Beast
    '91 ///M5 - ///M-unization Donor
    '92 ///M5 - Her DD
    '95 525iT - ///M Donee
    BMW POWER bi-turbo

  14. #64
    Join Date
    Oct 2014
    Location
    mr
    Posts
    4
    My Cars
    m3
    Any interior shots from any of you e12 guys???

  15. #65
    Join Date
    Oct 2014
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    me
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    m3
    Thanks. Yeah, the car had just been painted. If you look carefully you can see the windshield was set in temporary and the wipers not yet installed.

  16. #66
    Join Date
    Dec 2010
    Location
    Portland, ME
    Posts
    5
    My Cars
    1978 530i, 2005 X3 3.0
    Hey BmBoy91,
    I'm a 2002 boy with access to a sweet 78 530i. 84k one owner miles, always maintained and in excellent cosmetic condition. No rust anywhere. Besides the thermal reactor / cracked head issue, anything else i should be consered about? I really wasn't planning on an E12 for my next project but this seems like a cherry?
    thanks

  17. #67
    Join Date
    Nov 2014
    Location
    seacliff ny
    Posts
    2
    My Cars
    79 BMW 528i
    Hello guys i've currently ran into a rut with my 79 528i. Ive been having the problem where my car starts but doesn't want to stay on for more then 5 seconds. i thought this was the result of a battery and alternator so i replaced both along with a starter but the car still doesn't want to stay on longer than 5 seconds. i sprayed starter fluid in the throttle body to get it to stay on a little longer which led to the asumtion its a fuel problem. I pressure tested the fuel pump and that seems to be running in spec aswell. yet the car still wont stay on. the car is only getting enough gas to run off one cylinder which is causing it to put and misfire, the only thing else i could think of would be the multi purpose relay.. someone please help

  18. #68
    Join Date
    Nov 2011
    Location
    United States
    Posts
    12
    My Cars
    85 735i
    so i just bought a 1980 528i last week and i was driving it home the heat was on and it was hot so i turned the left dial from warm to i think past 0 ( it was dark) car started to blow cold air so i turned the dial back to about the 9o'clock spot and the air was still cold. so i moved it all the way back to warm and still no heat. crap loads of heat to no heat. did a gear or something in the climate control strip? also when i turn the dial to cold lots of air come out of the ducts but on warm air only comes from the defrost and floor. ideas?

  19. #69
    Join Date
    Nov 2009
    Location
    Newark, NJ, USA
    Posts
    17
    My Cars
    1974 Bavaria, 1978 530i
    cbruce, were you able to get this fixed. I am having kind of the same issue here but mine misfires randomly and just seems to starves for gas out of no were and run on 3 cylinders. If you did solve the issue or if anyone has any ideas.

  20. #70
    Join Date
    Nov 2009
    Location
    Newark, NJ, USA
    Posts
    17
    My Cars
    1974 Bavaria, 1978 530i
    Guys just to give you an update on the Misfiring issue. I replaced all spark plugs, points, cap rotor, Cold start valve, and finally the Mass air flow sensor. Every time a part was changed the car would give better performance and the misfiring would be less now I am down to the car only misfiring when is cold it would take about 15min after start to stop Misfiring. Any ideas on what should I check?

  21. #71
    Join Date
    Jan 2009
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    In the Darkness, where fear and knowing are one
    Posts
    700
    My Cars
    1987 Fiero GT
    Coolant temp sensor?

  22. #72
    Join Date
    Nov 2009
    Location
    Newark, NJ, USA
    Posts
    17
    My Cars
    1974 Bavaria, 1978 530i
    DarkSideofWill, thank you so much for the suggestion, it ended up that the coolant temp sensor wire connector was broken and it was not making a good contact as you can see in the picture. I replaced the part and saw the improvement right away but I am still getting a rough start and in occasions mostly when it is cold out it would misfire until it warms up.
    Again replacing this part did make an improvement I am not getting the constant misfiring anymore.

    Again thank you so much DarkSideofWill, but do you have any ideas on where I should go next to find this stupid misfiring, by now it feels like I have replaced every single part.
    Thank you in advance.



    - - - Updated - - -

    Also did a smoke test, a boot was cracked and it was replaced. Gas pump was also replaced.
    Attached Images Attached Images
    Last edited by BavariaRR; 03-25-2015 at 11:13 PM.

  23. #73
    Join Date
    Apr 2007
    Location
    SF Bay Area
    Posts
    4,343
    My Cars
    '78 320i M42
    I'm having a really hard time finding anybody who owns an E12! I have some early E21 intake runners that are a great bolt-on upgrade for the M30. Selling a total of 8 runners (parted out two '78 M10s) for 80 bucks.

  24. #74
    Join Date
    Nov 2009
    Location
    Newark, NJ, USA
    Posts
    17
    My Cars
    1974 Bavaria, 1978 530i
    Guys what fixed my misfiring was replacing the multipurpose relay. I also replaced the cold start relay and she is now acting as it should : )

  25. #75
    Join Date
    Jan 2009
    Location
    In the Darkness, where fear and knowing are one
    Posts
    700
    My Cars
    1987 Fiero GT
    I don't know much about early Bosch systems, other than their coolant temp sensors tend not to last, and time is hard on wiring.

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