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tamo3

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    10 years after hybernation - '75 280z

    in S30 Series - 240z, 260z, 280z

    Posted · Edited by tamo3

    After search root causes....

     

    I fount Water Temp Sw cable was broken.

    post-25175-0-86200400-1453087396_thumb.jpg

     

    post-25175-0-31568300-1453088845_thumb.jpg

    I thought both connector was connected to ground somehow I soldering it.

     

     

    and replacement parts is not available.

    But it's not MUST Have parts. So, I disconnected them.

    http://www.classiczcars.com/topic/39650-requesting-dizzy-wiring-photos-been-searching-multiple-forums-for-hours/

     

     

     

    The root cause was simple. but it was hidden ... mistake.... 

    post-25175-0-14874700-1453087364_thumb.jpg

     

     

    I just forgot to put dizzy rotor.. Woops!

     

    https://youtu.be/omjroLNtqNk

    Finally engine runs!

    MSD6AL with 280z '75 wiring question

    in Ignition and Electrical

    Posted

    Thanks for your advice.

     

    My plan is to run as Fuel Injection and later swap with Triple weber. Since I start rebuilding my car, engine was running, I though it's much easier to back my car on street with fuel injection setting comparing with carb tuning....

     

    My distributor is none-CA model, so it's dual pickup. I will try that.

    MSD6AL with 280z '75 wiring question

    in Ignition and Electrical

    Posted

    Thanks NewZed for quick reply. 

     

     

    Yes, I don't get any spark.

    I unplugged spark plug and put it on strut tower mount and turn the key to start position, but I don't see any spark. I'm still using stock '75 EFI system.

     

    I haven't hook up tach cable yet.

     

     

    I did not know original EFI is incompatible with MSD6AL. 

     

    After your post I research the MSD6AL with EFI incompatibility issue on web and I found this thread.

    The MSD technician recommend to bypass original ignition module. Does it mean transistor?

     

    http://www.zcar.com/forum/10-70-83-tech-discussion-forum/17137-msd-installation-question.html

     

    MSD installation question
    I am a little confused by the MSD technician and was wondering if any of you could help. First, my car is a 1978 280z with
    fuel injection. The MSD technician has advise me to use the white wire of the MSD unit, however, this is for a points type ignition. I would like to use the magnetic pickup trigger (violet and green wire) of the MSD 6AL however the technician does not know if it will trigger the ecu correctly. My question is has anyone got a MSD 6AL with blaster II coil and 8920 tach adapter(adapter for magnetic pickup ignitions) to work in a 280z with fuel injection using the magnetic pickup trigger (violet and green wire of the 6AL)? 

    I have copied my email communication with MSD below. 

    Thanks Jeff,

    Date: Mon, 17 Jan 2000 11:16
    From: Joe LaPille <jlapille@msdignition.com>
    To: "'jw90130@goodnet.com'" 
    Subject: FW:FW: MSD on 1978 280Z

    Sir,
    If you are going through the computer and fuel injection, you should use the white wire of the MSD box when wiring this up. I do not know if when triggering this with the magnetic pick up if the tach adapter will trigger everything properly. You will also need to completely bypass the factory ignition module, wherever it is at in this vehicle. Fuel Injected 280Z that we have dealt with all use the white wire of the MSD box and go through the factory ignition and do not use the magnetic pick up. Wire this up with the original coil negative wire to the white wire of the MSD
    unit.     You can then use the 8910 Tach Adapter if needed. I was under the impression initially that you were using the white wire as the trigger. 

    Thanks,
    MSD Tech

     

    RE: MSD installation question
    Jeff, I think you are getting confused with the magnetic pickup statements. The mag pickup on your stock system just tells the transistor ignition box when to remove the ground from your coil. Think of the transistor ignition box as electronic points, and your tach, coil, and ecu get pulsating grounding signals from your transistor ignition box. The mag pickup is only talking to the transistor ignition box and then the box talks to the coil, ecu, and tach. Soooo... the trans ig box is points for all practical purposes.
     
    John Hull 

     

    RE: MSD installation question
    John, Reading your response, It sounds like the original transistor ignition box is still used as an input to the MSD 6AL. Is this correct?
    When I was wiring the MSD 6AL, I removed the transistor ignition completing and routed new wires from the magnetic pickup terminal junction directly to the MSD 6AL(violet and green wires). The MSD does fire, it is just the ecu does not like the signal and does not fire the fuel injection. The signal is very close to the original stock signal just needs some tweaking. I am looking into modifying the signal from the tach adapter so that the ecu is happy. I am not sure if anyone has try this method before or if everyone is using the transistor ignition box as electronic points for hookup to the MSD 6AL. 

    Thanks for the reply.
    Jeff

     

    RE: MSD installation question
    I have the exact same system as you guys, I can't remeber wire colours . You don not bypass original transistor box . Take old coil wires feed into box, new wires go to coil . The tach adapter is nessary to trigger rom guage .

     

    RE: MSD installation question

    Why is the tach adapter even needed? If the transistor box stays connected to the distributor as stock ... and it's output (coil -) goes to both the coil and the tach(splits inside the firewall at the resistor) ... then everything is stock until this signal is used as a trigger in the MSD, instead of going directly to Coil (-). The MSD of course then generates it's own Coil (-) signal that then fires multiple times per the stock unit single fire.

    I agree that in this configuration the MSD wants a signal like what points would generate. But what is the tach adapter doing then?

    On the other hand:
    If you use the magnetic pickup signal into the MSD. The MSD will probably generate firing signals ... but the stock ECU fuel injection system will be confused with that signal, since the MSD is firing several times instead of the normal single time. This would cause the fuel system to run rich ... if at all. Remember the ECU uses the tach signal timing to inject the proper amount of fuel.

    As Clint has said: You can do all the wiring directly at the coil ... except for running a new 12 Volt power lead directly from the battery.

    ConorP

     

    MSD6AL with 280z '75 wiring question

    in Ignition and Electrical

    Posted · Edited by tamo3

    I try to hook up MSD 6AL.

     

    I found some write up from John Coffey, but I still don't get ingite.

    http://www.zcar.com/forum/10-70-83-tech-discussion-forum/21909-msd-6al-ignition-77-280z.html

     

    RE: MSD-6AL IGNITION / 77' 280Z
    <HTML>Repost on the same topic (another thread) from yesterday...

    Here's the wiring instructions: 

    1. Red 12 ga wire direct to battery positive. 
    2. Black 12 ga wire direct to batter negative. 
    3. Red 16 ga wire to ignition switched power - mine is wired to the black wire with the white stripe that went to the original coil. 
    4. White 16 ga wire to the points, XR700, Unilite, or Allison trigger. 
    5. Orange 16 ga wire to the positive side of the coil. 
    6. Black 16 ga wire to the negative side of the coil. 
    7. Don't use the purple or green wires unless you have a magnetic pickup for the ignition. 
    8. Tach goes to the blade connector on the end of the MSD. 
    9. Make sure the red wire is clipped under the little black plug on the side of the MSD. 

    - John</HTML>

     

     

    My question is where should I hook up white wire?

    post-25175-0-45204300-1452135254_thumb.jpg

     

    Thanks for your help in advance.

     

    tamo3

    10 years after hybernation - '75 280z

    in S30 Series - 240z, 260z, 280z

    Posted

    It's been busy for work and did not have much update.

    Also, updating electric wiring is...not so fun.

     

     

    Finally, I got spare time during Xmas holiday and focused on running engine.

    I removed Shunt since my plan is to swap Ammeter with Voltmeter.

     

    After removing Shunt, I connected the White wire and White/Red wire together.

     

     

    Hook up CS144 and try to ignite... does not work....

    I did not get spark at all.

     

    So, I connect MSD 6AL.

    post-25175-0-33547300-1452134905_thumb.jpg

     

    Still not get spark.

    I wonder where I should connect white wire? Should I connect to terminal?

     

    10 years after hybernation - '75 280z

    in S30 Series - 240z, 260z, 280z

    Posted

    Working on exhaust.

     

    My original muffler has a big hole at the bottom. I need to replace it. I got fat muffler from junkyard I can use it until I got good header and re-do entire exhaust system.

    post-25175-0-45689900-1423848255_thumb.jpg

     

    post-25175-0-55355800-1423848175_thumb.jpgpost-25175-0-36514200-1423848166_thumb.jpg

    Chop off pipes.

     

    post-25175-0-61852700-1423848271_thumb.jpg

    While cleaning OBX muffler, I discovered it comes with silencer.

     

    post-25175-0-64135300-1423848286_thumb.jpg

    Wash off with Simplegreen as usual.

     

    post-25175-0-07988900-1423848364_thumb.jpgpost-25175-0-59910300-1423848371_thumb.jpgpost-25175-0-28991600-1423848379_thumb.jpg

    I don't know how much I can re-use gasket. Copper sprayed. 

     

    post-25175-0-23967400-1423848469_thumb.jpgpost-25175-0-36569000-1423848478_thumb.jpg

    Fixed the small hole with this. I'm not sure how durable it is...

     

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