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d16y8 head onto d15zc bottom end. Anything I should know?

Discussion in 'Engine Tech / Drivetrain' started by HotHatchEG707, Nov 12, 2010.



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  1. HotHatchEG707

    HotHatchEG707 New Member

    Joined:
    Nov 5, 2010
    Messages:
    2
    Location:
    Eureka
    So i recently bought a 1993 civic hatch. The car was the vx model and came with a d15zc engine, according to honda the motor is pushing a maximum of 90 horsepower and 98 ft lb. its seriously...so slow. The motor has 180k miles on it and still has perfect compression on all cylinders and runs just fine. I am purchasing a d16y8 head from a friend. Its been rebuilt with a stage 2 vtec cam, he used the head on an old turbo project.

    So from what I can tell I will need an ECU, since he used a aftermarket programmable ecu originially since the head was part of a turbo setup. But which ECU do I use?
    Can I use my stock fuel rail?
    Is there anything else I should know? Im assuming its pretty straight forward, bolt on and go.

    Thanks guys.

    Heres a pic of my car.

    [​IMG]

    Uploaded with ImageShack.us
     
  2. civicmand16y7

    civicmand16y7 New Member Registered VIP

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    Jun 17, 2010
    Messages:
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    Location:
    eastaboga alabama
    was there a d15zc ever made??? that car came with a d15z1 and the zc is a dohc motor make sure what type of your motor you have frist and let us know so we can help you better
     
  3. civicmand16y7

    civicmand16y7 New Member Registered VIP

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    Location:
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    was there a d15zc ever made??? that car came with a d15z1 and the zc is a dohc motor make sure what type of your motor you have frist and let us know so we can help you better
     
  4. jlicrx

    jlicrx New Member Registered VIP 5+ Year Member

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    Colorado Springs
    the 93 VX came with a D15Z1 engine, not a ZC - all ZC engines, DOHC and SOHC are 1.6L - a D16Y8 head on a D15Z1 bottom end with D15Z1 pistons will result in a compression ratio of around 8.0:1 - not going to make much power
     
  5. civicmand16y7

    civicmand16y7 New Member Registered VIP

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    and the z1 motor is a vtec motor anyways it will be a wast of time and money
     
  6. 31dev31

    31dev31 Chillin' Canadian Member Registered VIP Registered OG 5+ Year Member

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    D15Z1 have too low of a compression to fully benefit from a mini-me setup.

    I would recommend a full D16Z6 swap.
     
  7. civicmand16y7

    civicmand16y7 New Member Registered VIP

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    why would you do a mini me swap on a motor that has vtec already...just do a motors swap
     
  8. HotHatchEG707

    HotHatchEG707 New Member

    Joined:
    Nov 5, 2010
    Messages:
    2
    Location:
    Eureka
    ah ok. well for whatever reason my motor is stamped d15zc, no joke lol. I will take a photo. if the compression will be that low then your right i really wont be gaining much power from it at all so definitely not worth my time i guess ill just have to hold on until I can afford a B series swap.

    Thanks you guys.
     


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