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Mini Me help on an '89 Civic DX Sedan

Discussion in 'HYBRID -> ED-EF / DA' started by Civic_Tacoma, Jul 10, 2003.

  1. Civic_Tacoma

    Civic_Tacoma Member

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    I have an '89 Civic DX Sedan with the D15B2 engine, and all the parts from a D16Z6 to do a Mini Me Swap. I need some help with switching from Dual Port injection to Multi Port injection, and wiring of the VTEC solenoid. DO I need any wiring from the D16Z6 engine at all? I'm using the stock DX computer and tranny, due to restricted funds. Any and all help is appreciated. Also....which engine do I need to use to buy an intake? I was thinking that I would need to go by the D15B2, is this correct? Thanks in advance.
     
  2. Civic_Tacoma

    Civic_Tacoma Member

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    Somebody please help......I need to get my car going and I can't find any REAL help on the net. I am lost completely and my car won't be driveable until I get this swap done. I have the head, intake manifold, TB, all sensors, fuel rail, distributor, and injectors from a '94 D16Z6 engine. What else do I need? Can I use my DX ECU and get evrything to work? If you don't want to answer here....email me at comatose@chartertn.net
     
  3. Raggedyman

    Raggedyman Member

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    I'll try to help since I just did this exact same thing....except I did the entire engine instead of just the head and my hatch is a '90 std. From what I was told, you HAVE to have an Si ecu. I'm not positive why, but I think it's due to the DPFI swap to MPFI. I was also told the intake manifold had to be from the same ecu as the Si but I can't imagine why. I do realize the injectors that correspond to the ecu must be kept (i.e. peak hold for the Si ecu as opposed to saturated for the Z6), so I used the Si intake manifold instead of the Z6.

    As for wiring the MPFI, you'll also need the resistor box for the fuel injectors. If you can get your hands on a decent diagram, you'll see that wiring the resistor box is a piece of cake. I wound up making a harness for the engine using both the old engine harness (D15A1 IIRC) and the D16Z6 harness. I just pulled the pins from the main plugs on the Z6 harness and reinserted them into the main plugs from the old harness. That way, I didn't have to do much soldering in the engine compartment in order to get the sensors wired up.

    As for an intake, I found one that fit from the same style intake out of a junkyard...cost me 10 bucks for all of it.

    You'll also need the distributor that matches the ecu. In my case, it was an Si model that needed some modifications in order to fit the Z6 head.

    Check out this site for more info: http://www.angelfire.com/ca/DrOhm/hybrid.html
    And this one: http://www.geocities.com/bing_bong916/vtec.html
    Or this one: http://crx.honda-perf.org/articles/moremin...moreminime.html

    As for a trigger for the VTec, I used an Autometer tach with a shift lite....just be aware that the tach switches the negative instead of the positive. You'll need to wire that to energize a relay and switch the positive through that to pull in the VTec solenoid. Mine works nice, but there's not much difference I see. Everyone will tell you to get a VTec ECU, but I was low on funds too so I doubt you'll take that route.

    Hope that helps a bit.

    Good luck!
     
  4. Civic_Tacoma

    Civic_Tacoma Member

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    So I need to get an SI ECU, Injectors, Fuel rail, Throttle Body, resistor box, and harness? Thanks for the help.
     
  5. Raggedyman

    Raggedyman Member

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    You'll need a distributor that matches the ecu. There will probably be some modifications but it's only cutting away at the mounting ears and using some flat washers. There's a pic on the hybrid site but it isn't very clear. Just do as it says....don't cut anything at first. Use vise-grips to hold it in place to get the timing right then you can mark the distributor as to where it needs to be cut. A good file will clean up any burrs and still make it look presentable.

    Good luck!
     
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