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'89 DX. overheated d16a6. replace with d15b2 any changes needed?

Discussion in 'Civic and CRX - EF' started by corruptpc, Sep 23, 2009.

  1. corruptpc

    corruptpc New Member

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    i bought a 89 civic hatch from a friend. his motor overheated. i guess cuz oh his radiator. bought it for $200. i have an oportunity to buy a d15b2 for $100.

    i was wondering if this motor will swap right in? any changes to the harness? ive been searching... but im new to civics and sohc. i mostly mess with integras and b series. ive read something abot mpfi and dpfi conversions. i hope this isnt necessary in my case. is there anything else i need to buy? new ecu? i think the b16a6 has the pm6, and ive read i need the pm5 or 4. so much info :( dont know whats reliable info.

    someone help.

    bottom line is: i have a chance to buy the d15b2... and replace my busted d16a6... should i just do it? i just want to get this car running. if getting this motor working right in my 89 civic dx will be somewhat easy and inexpensive, ill go for it.:D
     
  2. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    well the d15b2 motor has a different harness because its dpfi and not mpfi like the si motor.also the ecu is different, but other than that its perty much a direct swap
     
  3. corruptpc

    corruptpc New Member

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    so i have an si motor... does that mean the whole car is an si? maybe that motor was swapped in. i dont see any SI decals.

    here is info from wikipedia

    D16A6

    Also known as D16Z2.
    • Found in:
      • 1988-1991 Honda Civic Si, CRX Si, Civic Wagon RT4WD
      • 1990-1991 Honda Civic EX Sedan
      • 1988-1995 Honda Civic Shuttle RT4WD (UK/Europe/Asia/AU/NZ)
      • 1989-1996 Rover 216/416 GSi/Tourer (UK/Europe)
    D15B2
    • Found in:
      • 1988-1991 Honda Civic GL/DX/LX
      • 1988-1991 Honda CRX DX
      • 1992-1995 Honda Civic LSi Hatch/Saloon (European Market)
      • 1990-1995 Honda Concerto (European Market)
    according to the above, my car originally had a d15b2. am i right? so... if my car is a DX... with a d16a6, im assuming that it was swapped in.

    confused. :( anywayssssss. this would also mean that i have an si harness... so BASICALLY... i would just need to get the original parts (motor, ecu, engine harness) and BAM. done, no?
     
  4. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    well does your car have a sun roof ?
     
  5. jlicrx

    jlicrx Senior Member

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    take the intake manifold, injectors, etc. along with the distributor from the D16A6 and install them on the D15B2 and drop it in - just like doing a DPFI to MPFI swap, except the wiring is already done
     
  6. INJEN78

    INJEN78 HS LEGEND

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    word..then later on when you wwant to upgrade..its already ready
     
  7. Magana559

    Magana559 The Warden

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    b2's are known for faulty head gaskets :ph34r:
     
  8. GlassHeadlights

    GlassHeadlights West West Yall

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    I don't think so, they use the same gasket as the A6. No matter what motor you can expect the headgasket to go out between 300,000-400,000 miles.

    Also here is my 1989 Si hatch with a D15B2 (Si intake manifold). I didn't notice a difference between A6 and B2.

    YouTube - 1989 Si hatch with D15B2
     
  9. Magana559

    Magana559 The Warden

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    dont the b2's have a graphite head gasket?
     
  10. GlassHeadlights

    GlassHeadlights West West Yall

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    I though it was called metal composite. Anyway the A6s have the same gasket. Most '92 and up use a stainless MLS gasket, it lasts longer if you deck(s) are nice and flat.
     
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