1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

What Do I Need To Do This?

Discussion in 'Engine Building' started by auggiereg, Jun 9, 2003.

  1. auggiereg

    auggiereg Member

    Messages:
    89
    Likes Received:
    0
    Joined:
    Jan 23, 2003
    What parts do I need to change from my stock Civic DX Sedan so that this set up will work? I already have the engine and tranny. The tranny has a flywheel, clutch kit, hydrolic clutch, and starter. The motor has head, intake manifold, all pulleys, fuel lines, and other minor things. What I really want to know is if I need to change the computer, A/C, distributor, throttle body, and things of that sort. Any answers or advice would be greatly appreciated. Thanks for all the help.
     
  2. sohcslammer

    sohcslammer Senior Member

    Messages:
    2,193
    Likes Received:
    0
    Joined:
    Apr 11, 2003
    Location:
    Bay Area
    I'm not sure but I think you will also need to swap TB, computer, and axles??? I really don't know to go from D15 to D16. Computer for sure tho...
     
  3. DeadCivic

    DeadCivic Junior Member

    Messages:
    1
    Likes Received:
    0
    Joined:
    Jun 30, 2003
    If you plan to change only the head, this will be your shop list:

    D15B7 block
    D16Z6 head
    D16Z6/D16Y8 head gasket (the D16Y8 headgasket is almost 1/2 the size of the Z6, so it will up the compression some)
    Civic VX timing belt
    Civic HX spark plugs (not required but recomended)
    D16Z6 ecu
    D16Z6 intake manifold (including fuel rail and injectors)
    D16Z6 distributor

    You can get away with using a non-VTEC ECU and running the VTEC to a MSD RPM switch but the fuel maps will be all off. So I recommend getting a D16Z6 ECU.

    Using the D16Z6 ECU you will have to run three wires to make VTEC work: the VTEC solenoid, VTEC oil pressure and VTEC oil pressure ground

    For the tranny, 1st & 2nd gear basically are the same, so don't waste money. I sugest that you can use the 3rd gear of the EX on the DX and move the 3rd to 4th. Here are some points you can explore:

    Hybrid tranny #1 Use a Civic CX 3rd gear for 4th gear in a SI/EX tranny.
    Hybrid tranny #2 Use a ZC 3rd and 4th gear in a SI/EX tranny.

    Here is what it would look like on paper...(I just copied and pasted this out of a file don't think all this is stored inside my head hehe)

    This is the gear, gear ratio, shift points, and top speed in each gear at top rpm.

    DX
    1st----3.250---0000/6800---34.8mph
    2nd---1.761---3685/6800---64.3mph
    3rd----1.172---4526/6800---96.9mph
    4th----0.909---5274/6800---124.5mph
    5th----0.702---5251/6800---161.3mph
    Final Drive---4.058

    Si/EX/ZC
    1st----3.250---0000/7200---35.2mph
    2nd---1.900---4209/7200---60.2mph
    3rd----1.250---4739/7200---91.6mph
    4th----0.909---5236/7200---125.9mph
    Choose your 5th
    5th----0.702---5560/7200---163.0mph (EX coupe and EX sedan)
    5th----0.750---5941/7200---152.6mph (SI HB and Del Sol SI)
    5th----0.771---6107/7200---148.4mph (ZC)
    Final Drive---4.250 (for the EX/SI, not sure what the ZC is)

    Hybrid #1 using stock gears (CX 3rd for 4th)
    1st----3.250---0000/7200---35.2mph
    2nd---1.900---4209/7200---60.2mph
    3rd----1.250---4739/7200---91.6mph
    4th----1.066---6140/7200---107.3mph
    5th----0.771---5207/7200---148.4mph

    Hybrid #2 using ZC 3rd and 4th gears
    1st----3.250---0000/7200---35.2mph
    2nd---1.900---4209/7200---60.2mph
    3rd----1.346---5101/7200---85.0mph
    4th----1.033---5526/7200---110.7mph
    5th----0.750---5228/7200---152.5mph

    Hope you have fun.... :lol:
     
  4. BigJ

    BigJ I'm just about that action Boss. VIP

    Messages:
    11,091
    Likes Received:
    408
    Joined:
    Oct 4, 2002
    Location:
    Washington


    So you are telling me my 93 si, when I rap out 3rd gear, I am going 91+ when I hit like 7500 rpms?

    That's crazy, I dun have a speedsensor, so yeah, no speedo.
     
Verification:
Draft saved Draft deleted

Share This Page