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Thread: FS Ignition wires for M70 and M73 engine

  1. #26
    Join Date
    Jun 2011
    Location
    Dubai
    Posts
    98
    My Cars
    52/61 E31 Platinum,GT350
    Thanks Shogun, I received the parcel in post today, great service really appreciate it.

    Quote Originally Posted by shogun View Post
    @hurtwj: 1 set for your E31 850 M70 shipped to Appling, GA
    @SteveCT: 1 ignition wire set for your ‘93 850Ci shipped to Bedford, NH
    @DonceVi: 1 ignition wire set for your 850 shipped to Kaunas, Lithuania
    @Brad: for your E31 850 shipped to Anaheim, CA 2 pcs - 69 cm cables and one pc - 85 cm cable . More single wires available, also between distributor and ignition coil = wires with 2 angled boots
    @B44DARS3: 1 set ignition wires for your E31 with M73 engine shipped to Dubai, U.A.E

  2. #27
    Join Date
    Aug 2017
    Location
    Sweden
    Posts
    5
    My Cars
    1995 BMW 750
    Finally I found some time to install the wires

    On the M73 in E38 I noticed that the wires to the coils differ in length compared to the original wires, one is approximately 100 mm shorter and one is approximately 150 mm longer. A slightly different routing of the cables solves that issue. All the other cables are also a little shorter compared to the original ones but that is not a problem. Installation went smooth for being a task under the hood on the 750

    // Magnus

    Quote Originally Posted by shogun View Post
    @750 Swede: 1 set ignition wires in RED for your M73 shipped to Sweden

  3. #28
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    44,969
    My Cars
    11/88 E32 750iL+98 E36M3
    Here's a quick & simple write up by forum member sreten with pictures for installing cylinder identification sensors aka donuts on wires #6 and #12. These wires are identified by comparing length with the rest of the wires, them being the longest ones obviously. On the distributor boot end of the wire, get a slim flat blade screwdriver and slide it between the rubber boot and the wire. Use a lubricant of your preference, in my case WD-40, and spray it liberally. Follow up with more lubricant into the boot opening.



    Work it in and you should be able to simply slide over the rubber boot towards the inner part of the wire like this. Hold the wire and push on the boot, don't pull on the cable. Use more lubricant if necessary as you don't want to pull on the wire and stretch it.



    Grab and hold the wire with a microfiber cloth (for better grip) and start unscrewing the plug in anti-clockwise direction. It takes a decent amount of force to unscrew the plug so don't be afraid to use it as you can't really do any damage here.
    The plug simply unscrews and the woodscrew inside looks like this.




    Remove the rubber boot from the wire and it's time to install the cylinder identification sensor. The direction in which the sensor is installed matters. If you are reusing your old sensors, simply install them using your old wires as a reference.
    If you are installing new sensors, as I did, the 4 tips/prongs should be pointed in the distributor cap direction like this.




    Lubricate the rubber boot and slide it back onto the wire.



    Grab a pair of sharp scissors and cut off 3 mm of the end of the wire thus getting a fresh bit of the wire where the woodscrew will go in.



    Apply WD-40 on the end of the wire and reinstall the plug by screwing it back into place in the clockwise direction. Slide the rubber boot over the plug, if needed use more WD-40 to help boot slide easier without putting stress on the wire.




    Now we want to verify that we have a proper connection and installation was successful. Break out your multimeter and set it to measure resistance (Ω). Stick a test lead at each end of the wire and you should be getting a readout of around 6 kOhm. This goes for all 12 wires, spark plug boot is 5 kOhm and distributor cap boot is 1 kOhm. The wire for ignition coil to the distributor cap is 2kOhm.



    Additionally, you can wiggle and bend the wires slightly to make sure the connection is constant and doesn't drop.



    Job well done.
    Last edited by shogun; 12-15-2018 at 07:54 PM.
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  4. #29
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    44,969
    My Cars
    11/88 E32 750iL+98 E36M3
    @Umino: 1 set for M73 V12 shipped to Mito
    @Gary: 1 set for 1988 E32 750iL shipped to Seattle, WA
    @Iino: 1 complete ignition wire set for M70 shipped to Sumidaku
    @sonianbrad: 1 single wire for cylinder #2 on your 1993 E31 850Ci shipped to Lake Forest, CA
    @hurtwj: 1 set for your E31 850 M70 shipped to Appling, GA
    @SteveCT: 1 ignition wire set for your ‘93 850Ci shipped to Bedford, NH
    @DonceVi: 1 ignition wire set for your 850 shipped to Kaunas, Lithuania
    @Brad: for your E31 850 shipped to Anaheim, CA 2 pcs - 69 cm cables and one pc - 85 cm cable . More single wires available, also between distributor and ignition coil = wires with 2 angled boots
    @B44DARS3: 1 set ignition wires for your E31 with M73 engine shipped to Dubai, U.A.E
    @750 Swede: 1 set ignition wires in RED for your M73 shipped to Sweden
    @Bob: 1 set ignition wires for your M70 shipped to Fountain Hills, AZ
    @B44DARS3: 1 set ignition wires for your E31 with M73 engine shipped to Dubai, U.A.E
    @nrp22101: 1 set for M70 with red wires shipped to Mclean, VA
    @nrp22101: 1 set in red colour for M70 shipped to McLean, VA
    @TheStevo: 1 set of ignition wires for your 2000 E38 750iL M73 shipped to Sparks, NV

    I also have some extra, new Ignition Coil Wires in black which attach between coil and distributor cap, BMW p/n for comparison 12121725038, original ones are MSRP $50.07/piece, can offer cheaper,my ones consisting of silicone cable copper core, 2 boots angled, each 1 K Ohm. Contact me in case of need with zip for shipping cost calculation, can sell single or as pair, whatever is needed. Limited qty available. Pic of black cable set.
    Attached Images Attached Images
    Last edited by shogun; 05-18-2019 at 07:14 PM. Reason: shipping update for a longer period
    SHOGUN'S TRICKS AND TIPS FOR THE SEVEN SERIES
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  5. #30
    Join Date
    Aug 2007
    Location
    Lansing, MI
    Posts
    26
    My Cars
    96 750iL, 84 e30 m50
    Are these still available? I need a set for 96 750iL M73 black or what colors still available?


    Sent from my iPhone using Tapatalk
    Cars:
    1991 Pontiac 3000 SE *SOLD*
    2002 Ford Focus ZX5 *SOLD*
    1995 BMW 325iC *SOLD*
    1986 BMW 325es *SOLD*
    1984 BMW 325e with m50 swap (track car)
    1996 BMW 750iL (daily driver)

  6. #31
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    44,969
    My Cars
    11/88 E32 750iL+98 E36M3
    Still available ex stock in black and also in red.
    SHOGUN'S TRICKS AND TIPS FOR THE SEVEN SERIES
    http://twrite.org/shogunnew/topmenu.html

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