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91 civic d15z1 block z6 head

Discussion in 'HYBRID -> ED-EF / DA' started by DeEvolveMe, Apr 1, 2011.

  1. DeEvolveMe

    DeEvolveMe New Member

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    Ok so here I go, I picked up a 91 hatch a few months back it had the z1 block and a z6 head, now it runs fine but could be better since it only has dpfi and I would like to convert to mpfi. Now I got the z6 dizzy and complete intake manifold and the p28 is on it's way. Do I need a resistor box? Si engine harness? Or anything special for the conversion since I have the engine in already? Anything advice would help first project car. Thanks
     
  2. zlee19

    zlee19 New Member

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    i currently did a rebuild on a 92 civic cx and had the biggest headache i could imagine i thought the motor was a d15b8 wich is the 8 valve but it turned out to have a d15z1 block and a d16z6 head and i got to wondering how much power this motor puts out stock?
     
  3. jlicrx

    jlicrx Senior Member

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    the main problem with a having a D16Z6 head on a D15Z1 block is that the compression ratio is dropped down to only about 7.8:1 - not good for producing much power

    about the only way to fix it is to put JDM D15B P08 pistons in it to raise the compression back up to 9.3:1 - or you could swap the entire Z1 short block for one from Z6
     
    Last edited: May 11, 2011
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