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89 civic SOHC w/ V-tech head

Discussion in 'HYBRID -> ED-EF / DA' started by grassyfields9, Mar 12, 2005.

  1. grassyfields9

    grassyfields9 Junior Member

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    I have an 89 civic DX hatch and was trying to get cheaper hp rather than swapping the whole motor can I swap the non v-tech head for v-tech and swap the DPFI for MPFI. If anyone has done this or knows if this can be done any help would be great.
     
  2. darien234

    darien234 Senior Member

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    Yeah but you are going to have to find a way to activate VTEC I see alot of people sellng the multiport swap here on the site. Get a PM6 and the intake manifold and you might need a si dizzy. Its fairly easy search the reference section here on Hondaswap it will have all the info you need.
     
  3. reckedracing

    reckedracing TTIWWOP VIP

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    there are many many write ups regarding DPFI->MPFI as well as mini-me vtec head swap


    vtech? :emofo: VTEC

    mini-me sohc vtec head swap should yield about 130 horse...

    but you need to activate vtec so you have 4 choices...

    1. ghetto ass RPM activated switch
    2. VAFC
    3. OBD0 vtec computer, pw0 or pr3
    4. OBD0->OBD1 converter and P28...

    price all your options before you decide on a head swap...
    you might find it cheaper and better gains to go with a ZC swap, or even B18 or something if you find a good deal...

    vtec head costs at least 100
    prob another 100 for the parts to swap DPFI->MPFI
    intake mani, resistor box, and si ecu to name a few...
    plus head gasket set...
    the p28 = 100+ easy, OBD0->OBD1 converter = 100+
    VAFC = around 250...
     
  4. Jeef

    Jeef NO MA'AM Moderator VIP

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    You can also use the ghetto ass toggle switch to activate VTEC instead of those methods, but should only be used to test VTEC. :ph34r:
     
  5. grassyfields9

    grassyfields9 Junior Member

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  6. grassyfields9

    grassyfields9 Junior Member

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  7. grassyfields9

    grassyfields9 Junior Member

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    If I were to convert to a PW0 or PR3, could I use the ECU with just the MPFI conversion, or would it be wiser to convert to VTEC at the same time too. Also, I have an intake setup from a 94 EX OBD-1 in order to use this do I have to use the P28?
    Does the ECU conversion require a different harness if it is OBD0 or can you modify the existing?
    Thanks for all your guys' help, I just want to do this right the first time.
     
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