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ZC rebuild

Discussion in 'Engine Building' started by cheese9988, May 26, 2004.

  1. cheese9988

    cheese9988 Senior Member VIP

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    Well I got my zc in this winter, runs good and I like it. I honestly have never drivin a car this fast before and I am impressed by its speed already. But I need a project again for next winter. I am looking to add a small turbo, rebuild the bottom end and do some work on the head (cams & maybe pnp). I know you are all going to say get a b series but, I want to keep this. I am looking for about 200whp when I am done. I know it be easier with a b series, but to get another motor, ecu, mounts, tranny, more wiring, I don't want to get all that again. So what be a good turbo setup with a good bottom end? Looking for lower price turbo, one I can rebuild maybe even. I want to bore out the motor to a bigger displacement too. What pistons would match a larger bore? Or is there a good site that tells you all this stuff?
     
  2. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    I don't think anyone on this site is going to tell you exactly how to build your kit... read up some. I will give you a few tips though:

    Don't bore the engine. Your 1.6L is plenty enough to make 200whp under boost without weakening the cylinder walls. Your stock pistons and rods can handle the 200whp goal also- just make sure you tune everything properly.
     
  3. ohmstable

    ohmstable Senior Member

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    Calesta are you saying that a stock ZC motor with enough boost could safely put out 200Whp with proper tuning?
     
  4. brian11to1

    brian11to1 Senior Member

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    If you are lookin to buy I have a sohc ZC which needs rings. But if you are building it then they'll get replaced. Ill sell for $200 let me know.
     
  5. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Pretty much, yeah. You might want to pick up a set of cam gears to cut down your overlap or get some cams to pick up the lift some, but yeah- you can make 200whp on a stock block DOHC ZC.
     
  6. brian11to1

    brian11to1 Senior Member

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  7. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Probably not without an aftermarket cam... but with the right head flow, the SOHC ZC block should be able to hold 200whp.
     
  8. brian11to1

    brian11to1 Senior Member

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    on stock bottom end?
     
  9. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Why not? The D16Z6 and D16Y8 guys run 200-220whp with bolt on turbo kits and good tuning, all without going inside the engine to change a thing. The D16A6 bottom end is just as strong- it just has twice the number of oiling holes on the crank as the Z6 and Y8.
     
  10. cheese9988

    cheese9988 Senior Member VIP

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    not bad, thanks for the info, I couldn't find too much about building up the zc so I thought I'd ask. I already have the zc in there and running so I'm not looking to buy hehe. Would a small junk yard turbo that I can rebuild do the trick? Or is that too small ie chrysler/mitsubishi turbo?
     
  11. radnulb

    radnulb Senior Member

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    200WHP doesn't need a massive turbo.

    I'd say look to a 50trim T3 - if junkyarding, look to Saabs, larger Volvo engines, etc. A T25 or 14b from a mitsu would prob be a little too small. If you want to run a smaller turbo, you will *need* a 2bar or 3bar MAP sensor. You're not going to hit 200WHP on 10psi with a small turbo + a ZC. Just not going to happen.

    A decent T3, decent manifold, properly sized IC, 3" DP, 3" exhaust would be able to hit 200WHP by 14.7psi easily and safely.
     
  12. cheese9988

    cheese9988 Senior Member VIP

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    hmm, it has a brand new crx si exhaust from front to back, bored out cat, zc header and zc 2-1 downpipe, I forget the diameter of it. Can I keep that if possible, I know the header has to go, I am looking for stock look with the car? The stock injectors ok too?
     
  13. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    You can keep the exhaust and dead cat (I would get a new one), but you would probably want to upgrade your injectors if you're planning on hitting 200whp.
     
  14. radnulb

    radnulb Senior Member

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    DSM 450s... Worth their weight in gold. $50/set all day long round here.

    www.turboedit.org will probably help too :)

    My friend Tony's turbo D16A6 pulled 13.14@108 on slicks in a 89 HF using a Volvo 760 T3 @10psi with a Saab Viggen IC. We're too cheap to take cars to the dyno, but those results assuming a 1800lb car+driver say we made ~180WHP. That's a single cam on an extremely budget setup with extremely good tuning :)
     
  15. cheese9988

    cheese9988 Senior Member VIP

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    from what I have been reading, the hf manifold with an adapter plate, and then make your own downpipe? or do they make a kit for the volvo/saab turbo to hook everything together?
     
  16. radnulb

    radnulb Senior Member

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    if you use a HF/std/CX mainfold, it would be a really good idea to port the shit out of them. tony spent a couple hours with a electric die grinder on his.

    he used a spacer plate + adapter plate purchased from BMC racing on homemadeturbo.com

    The Saab T3 I hae on my LS is notceably larger than the Volvo one on Tony's car - I'd try to find one if you can. If you feel like going bling-spec, a .48AR 50trim T3/T4 will do the job real nice.
     
  17. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    :werd:

    DSM 450s are great for the money. :thumbsup:
     
  18. cheese9988

    cheese9988 Senior Member VIP

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    Thanks guys! If I were going to rebuild the motor anyway to stock specs where could I find new rings, wrist pins, etc for the zc? Are there some compatible from other motors?
     
  19. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    The dealer? You can also get the parts used from other D series engines. I'm pretty sure that all the SOHC D series rings and pins are compatible.
     
  20. cheese9988

    cheese9988 Senior Member VIP

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    So in theory I could just go to napa and get a rebuild kit for any 1.6 d series?
     
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