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VTEC ZC

Discussion in 'HYBRID -> ED-EF / DA' started by tylonalsnifnfool, Oct 7, 2003.

  1. tylonalsnifnfool

    tylonalsnifnfool Senior Member

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    would it be possible to put a VTEC head on a 1.6L DOHC ZC?
     
  2. endlesszeal

    endlesszeal Senior Member

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    i doubt it.. since ZCs are from different castings for the Dseries and Bseries.. correct me if im wrong.
     
  3. Dustin_m

    Dustin_m Active Member

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    Actually the ZC is a D series, but the only VTEC D's are single cam, so it would make more since to go with a D16Y8 or D16Z6, since they are already VTEC.
     
  4. 91dxSiR

    91dxSiR Member

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    sohc vtec head or dohc vtec head?
    i know for a fact the dohc vtec head wont work...
     
  5. pissedoffsol

    pissedoffsol RETIRED

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    the ZC is DOHC. you don't need vtec dude....
     
  6. cavrx

    cavrx Senior Member

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    i got a sohc zc could you make this v-tec?
     
  7. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Time to clear up a bunch of misinformation...



    Read above... and once you have the Z6 head on the SOHC ZC, you'll have the strength of the SOHC VTEC engine with the better oiling of the SOHC ZC / D16A6 crank. The 88-91 D16A6 (and SOHC ZC) have the best bottom ends out of the D series blocks.
     
  8. SleEPeR_CRX

    SleEPeR_CRX Senior Member

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    :worthy: :worthy:

    good work calesta, u beat me to 'er :(
     
  9. ProspeedCTR

    ProspeedCTR Junior Member

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    True
     
  10. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    I'm actually shooting for something closer to 160whp if I can manage it... Since you're in California, just build up a Z6. You'll still be street legal, and yes you can make the same amount of power. The only major difference between the Z6 and A6 short blocks is the oiling in the crankshaft- the A6 has more oiling passages than the Z6 and Y8 cranks. I've seen plenty of examples of Z6 and Y8 engines making tons of power at 8000+ rpm while staying reliable, so I wouldn't worry about the oiling as much. I just prefer to keep the older bottom end for peace of mind.

    The reason why people want to go "mini-me" is mostly because they don't have to pull the entire engine, or they want to bump up their compression without changing pistons. I'm going to bump up my compression by using both the smaller combustion chambers in the head (you already have that with a Z6 engine) and higher compression DOHC ZC pistons. If you build up a Z6 engine and use DOHC ZC pistons, you'll have the exact same compression. The only difference between my bottom end buildup and yours would really be just the crankshaft oiling... and that's not too big of a deal. Oh- and the fact that mine will still say "ZC" on the block. I want to keep that.

    :lol:

    So build your Z6- it will be just as good as any modded mini-me setup.
     
  11. tylonalsnifnfool

    tylonalsnifnfool Senior Member

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    building up a d16z6 was my original plan but i was just trying to explore some other ideas. If i turbo charge a d16z6 then it is gonna be plenty fast. I'm gonna try to build it up to at least 200hp.
     
  12. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    You can get 200whp boosted on a stock internal Z6 with good tuning and a simple intercooled bolt on turbo kit. It's not hard. If you want to turbo your ZC, you can get pretty close to that too.
     
  13. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    It's really a tossup between spending the money and trouble to build up your D block or spending a little more cash and getting the B16. Your D16 build that you listed (looks mostly good) would probably cost you close to the price of a B16 and put down about about the same or less power to the ground as a modded B16 with no internal block work. Price things out and see where that takes you, then decide from there. With that list of parts, you're not going to be any cheaper on the D than the B... but you'll get the assurance that the D block is good from the inside out- providing you put it together well.

    The B16 has more potential for power later, but it's all up to how much money you want to spend... drop in the B and have about 145whp with I/H/E, or build the D to hell and have maybe 160whp. That's pretty much the limit of the D all motor until you get into head work and fancy tuning, but bolt a standard turbo kit onto the B16 later and you have a 250whp monster.

    To critique your list:

    Don't bother changing cranks... you'll have to start spec'ing out new bearings and everything. Pain in the ass if you want to do it "right."

    If you're converting to OBD1, you need the OBD1 ECU. You won't be able to tune, but a better alternative might be to use your PM6 ECU and drop a VAFC on top. You get VTEC activation and tuning capability at the same time. That's what I'm doing. It's a lot easier than converting everything, paying for new harnesses, and chipping your ECU.

    If you're going to use ZEX's 59300 cam, you should upgrade the valvetrain. The 59100 runs on stock valvetrain (I think), but the higher lift/duration unit really should have some more strength backing it.
     
  14. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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