Results 1 to 6 of 6

Thread: 1977 l28e to 1982 l28et swap harness help

  1. #1
    Registered User Jonnytalk's Avatar
    Member ID
    CZCC-23975
    Join Date
    Mar 2011
    Location
    Seattle, WA
    Age
    29
    Posts
    5

    Default 1977 l28e to 1982 l28et swap harness help

    I have a 1977 280z that I am swapping out motors from a 1982 280zx l28et. All of the mechanical part of it is done except the turbo plumbing. The problem im having is the electrical. I just bought a harness for the l28et motor to run the ecu but I dont know where to begin installing it, some of the wires are cut so if you have any pointer or instructions on how to go about this Id appreciate it. If all else fails im also willing to pay any locals to come and help me.
    thanks,
    Jon

  2. #2
    Registered User 5thhorsemann's Avatar
    Member ID
    CZCC-22854
    Join Date
    Nov 2010
    Location
    maryland
    Age
    55
    Posts
    1,398

    Default

    The US is a big place...............Define Local.

  3. #3
    Registered User Jonnytalk's Avatar
    Member ID
    CZCC-23975
    Join Date
    Mar 2011
    Location
    Seattle, WA
    Age
    29
    Posts
    5

    Default

    sorry, about that Seattle, WA

  4. #4
    Registered User
    Member ID
    CZCC-24597
    Join Date
    Jun 2011
    Location
    Ellicott City, MD
    Posts
    1

    Default

    I did a n/a to turbo swap in my supra, and had the same issue. In my case, the harness that came with the engine was cut almost completely near the ecu plugs, and I had to either buy an uncut complete one or try to match up 70+ wires... If most of the plugs are cut, then you'll be much better off buying a new harness, or at least a used one with minimal missing plugs. Also, if you are wondering which plugs are missing and you have your old harness, you can lay them out next to each other and that should give you an idea. It shouldn't be too hard because there really aren't all that many plugs to begin with.

    Also, as you route the harness through the firewall from the ecu and onto the engine, the plugs should generally fall into place around where they should be. Looking at pictures of 280z engine bays should give you a general idea of how to route it. If you have any questions feel free to post them up here (pictures are always good) and I can try to help, or someone else here will. I know I'm a noob to this forum, but like I said I did the same type of swap on my supra. Good luck!

  5. #5
    No more body roll! SteveJ's Avatar
    Member ID
    CZCC-5413
    Join Date
    Dec 2003
    Location
    Gainesville, GA
    Age
    54
    Posts
    3,651

    Default

    Download the FSM for the 82 at XenonS130.com and the 78 at XenonS30.com. Use the wiring diagrams from the 78 & 82 to identify the wires you need to connect to make the swap. Use waterproof connectors in the engine bay if you have to make the connections there.
    73 240Z
    74 260Z

    Blue's collection of tech tips - A great place to look for answers
    XenonS30 -The cheap source for FSMs
    Georgia Z Club
    Fiddling with Z Cars - Z car tips & tricks and pictures of my car-loving life.
    Steve's CARtography - Just car pictures.

  6. #6
    Registered User IdahoKidd's Avatar
    Member ID
    CZCC-17702
    Join Date
    Sep 2008
    Location
    Moscow Idaho
    Age
    60
    Posts
    751

    Default

    I have the exact same setup but I had a donor car to do a side by side conversion. I got a lot of material from Hybrid Z. No help at all from the members as they are VERY clickish. Read and compare all that you find as there is more misinformation there than that of use. I did finally find a pretty good wiring diagram with pictures that was about 80% correct. There is a lot of "I think" and "it should" and "I haven't actually done it but..." stuff there. Sort it all out but I did determine it wasn't as complicated as it appeared to be.

    Leonard

    72 240Z HLS30 49052 110 Persimmons/white stick
    72 240Z HLS30 70087 110 Persimmons/white auto 43K
    77 280Z HLS30 400336
    77 280Z Turbo HLS30 369869
    57 Volvo 444K
    57 IHS120
    85 500 SEC

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 25
    Last Post: 11-02-2010, 11:15 PM
  2. 1976 280Z with 1977 engine wiring harness- got questions.
    By Stangrage in forum Electrical (S30)
    Replies: 0
    Last Post: 08-11-2010, 03:39 AM
  3. L28e
    By Aussie260z in forum Engine and Drivetrain (S30)
    Replies: 1
    Last Post: 04-25-2005, 04:12 AM
  4. 1982 zx engine in a 1977 280z
    By DAT24Z in forum Engine and Drivetrain (S30)
    Replies: 2
    Last Post: 03-20-2004, 07:32 PM
  5. L28ET swap instructions??
    By gema in forum Engine and Drivetrain (S30)
    Replies: 2
    Last Post: 02-16-2004, 12:17 PM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •