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Thread: how do I swap into b18a1?

  1. #1
    DX User
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    Apr 2015
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    how do I swap into b18a1?

    My 87 lxi had an a20a1 and I started a b18a1 swap with a friend but the wiring seems to be tricky who's done this Im lost and my friends out.



  2. #2
    3Geez Veteran MessyHonda's Avatar
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    89 LX-i(5speed)
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    Re: how do I swap into b18a1?

    At least you are on the right website. you will have to run a custom harness. depending on what kind of ecu you have you will have to do your own wiring.

    1989 Honda Accord LX-i
    B18c1 swap since 7/2011
    175whp and 132tq
    Redzone tuned

  3. #3

    carotman's Avatar
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    89 Accord LX/B20A | 87 Accord Hatch "S" Stock | 94 Civic Hatch CX
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    Re: how do I swap into b18a1?

    The wiring is easy.

    - Install your A20A wire harness on the B18A1.
    - Add the missing wires and plugs on your current harness. Source them from the B18A1 harness.
    - Use a an OBD-0 ecu or get a conversion harness for an obd1 ecu

    http://pages.videotron.com/omus
    3geez member since July 12 2000

    I need these parts!
    https://www.3geez.com/forum/showthread.php?t=67742

  4. #4
    3Geez Veteran MessyHonda's Avatar
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    Re: how do I swap into b18a1?

    Quote Originally Posted by carotman View Post
    The wiring is easy.

    - Install your A20A wire harness on the B18A1.
    - Add the missing wires and plugs on your current harness. Source them from the B18A1 harness.
    - Use a an OBD-0 ecu or get a conversion harness for an obd1 ecu
    I did that and I found out some wires and connectors had to get fixed. I was having problems with my wiring so I went ahead and I got my self a brand new OBD1 harness and will relocate all the wiring from the sturt tower to go inside the car to the passanger floorboard like the civics and integra ecu location. I will post pics after the 3geez meet when I will take the car apart.

    1989 Honda Accord LX-i
    B18c1 swap since 7/2011
    175whp and 132tq
    Redzone tuned

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