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dx to vtec swap-help needed

Discussion in 'HYBRID -> ED-EF / DA' started by hleysam, Sep 11, 2007.

  1. hleysam

    hleysam New Member

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    i have actually a yr90 crx 1.5 dual carb and want to do an engine swap to a 1.5 soch vtec, the engine is from an eg4 civic hatchback!the civic is the donor car,so i can take everything a can from it.
    am doing the swap myself!

    questions are:
    are looms sames?
    what do i need from the vtec car?
    are the mount same?
    need technical help for the engine swap
    am currently base in dublin,irland
     
  2. 1988hondacrxsiR1

    1988hondacrxsiR1 Banned

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    The looms are not the same.
    You will need a ecu that has VTEC the mounts are the same. Refer to a chiltons manual for removal and installation. It is easy. Research more.
     
  3. hleysam

    hleysam New Member

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    ok now i got both car in front of me and will start to strip the crx first then the vtec
     
  4. 1988hondacrxsiR1

    1988hondacrxsiR1 Banned

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  5. D16a6EF

    D16a6EF New Member

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    where does the 1.5 Vtec motor come, does it come off from 92-95? or 90-91
     
  6. hleysam

    hleysam New Member

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    its from a 92 eg4 model civic
     
  7. D16a6EF

    D16a6EF New Member

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    ud need P28ecu and converted harness from obd0-obd1
    look up in rywires.com for obd0-obd1 jumper converted its pricey tho
    and the mount on engine are different u can change the mount standing near the timing crank take the old motor n put it in Vtec then it will bolt right on...are you gonna use cable tranny? it will bolt direct u will not have any problem with those:thumbsup:
     
    Last edited: Sep 14, 2007
  8. jlicrx

    jlicrx Senior Member

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    the dual carbed cars did not have a high pressure fuel system needed to run the fuel injection - they used a low pressure sytem with mechanical diaphragm fuel pump run off the camshaft - you would need to swap the entire fuel system (tank, pump, lines, etc.) in order to convert to fuel injected
     
  9. hleysam

    hleysam New Member

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    ok,i already stripped out the eg,take out everything,fuel pump,fuel tank,brake,the car is completely now,now going to take out the looms.
    what you thing if i change the complete loom?
    take out the complete loom from the eg and put in the crx?
     
  10. blackice90HB

    blackice90HB Senior Member

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    you CAN do that, but its a helluva more work.

    Just convert your DX DPFI harness to MPFI then wire up VTEC. Its not hard, there are plenty of write up on how to do so. But, You can change out the entire harness. You will have to redo your instrument cluster, though, it wont plug in. best bet is to convert your DX harness.


    Oh yeah, and on the engine, use the mounts from the DX, and use you DX tranny. you WILL not be able to use the new tranny unless you do a cable to hyrdo conversion, which is expensive anhd pointless. Cable work better regardless.
     
  11. hleysam

    hleysam New Member

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    thanks for your advice guys,
    Its been a long time i haven't work on the crx as i got myself a 94 civic sir2 and a 89 vti box shape civic.
    As for the crx i have the engine in the car but now need to sort out the interior looms, ie doors,lights and more important dashboard as am using the eg clock now ans all the ef conectoin is completely different from the eg!

    Do you know where i can get an ef and an eg wiring diagram? so that i can match up both looms.

    Cheers
    Ashley
     
  12. hleysam

    hleysam New Member

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    forget to mention- i did not put the 1.5vtec but went for a b16a2 transplant
     
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