people with zc's look or if you know alot

[kingpinn]

whould you tell me everything you know about the zc if you like it hate it had it getting it dose it take to mods and so on and so on ....... what kinda swap is it can almost anyone with the will drop it in you know all that stuff

[mrceej]

Both the SOHC ZC and DOHC ZC for the corresponding years are a direct replacement. The SOHC ZC is essentially the same deal as the D16A6 with a slightly more agressive cam profile with the DOHC ZC being closely related to the D16A1/8/9. Having said that, they swap in without major modification. The only thing you really have to worry about is converting your DPFI to MPFI if your car isn't originally an Si model. If it is, you can literally swap in either verison and go, even using the PM6 ECU that is already in your car. If not, aside from converting to MPFI you need to switch the ECU to run the four injectors. The 1st gen ECU from an integra (PG7) will work as will the 89-91 Si ECU (PM6) as well as the ECU meant for the ZC (PM7). There is specific close ratio transmission meant for the ZC but any transmission from the EF body style will work. As for upgrades, I hear people tend to state that there aren't many upgrades available specific for the ZC engine which in a way is true and not true. If you have the DOHC version (which is what I have) it's true that you won't find many specific parts to upgrade meant for the ZC, but it doesn't necessarily mean you can't upgrade it like any other motor. But you definitely have to know what is interchangeable and what is not. For example, the intake manifold is interchangeable with the 1st gen integra motor but not with the Si. What does that mean? You can use the Jackson supercharger meant for the 1st gen integra if your heart desires to go forced induction via a supercharger. But the exhaust manifold is interchangeable with any d-series counterpart (Note: Exhaust ports are the same size and shape as a 92-95 Z6 head but vertically off by 3mm). What does that mean? That you can use a Greddy turbo kit meant for the D16Z6 if you want a bolt on turbo kit. But since the kit is meant for a 92-95 civic, the charge pipes have to modified because they are meant to manuever around the engine bay of an EG and not an EF. Pistons have the same bore as an Si, alternator is interchangeable with 1st gen integra as is are the camshafts, cam gears are interchangeable with B-series, timing belt is interchangeable with an 88 prelude, etc. You just really gotta research your parts.

For me personally, I wouldn't change my ZC out unless there was a good enough reason. It is a good all around performer and can be modified just the same as any other motor. But as I stated, you can't just order a part for a DOHC ZC engine, especially since it was never offered as an option in the US. What it really comes down if you can't decide if this motor is for you is to ask yourself what your goal is with your car.

[travagliante]

hmmm.....Were did you copy and paste that from...
HAHA!!!

Well my experience with my zc was great! It was a good motor. Very inexpensive compared to other twin cam swaps. With the zc tranny combo it is a great setup for a reasonable price. But yeah, not much on aftermarket for them. Jackson Racing makes a supercharger for a DOHC ZC engine. Specifically for it, not a 86-89 integra! Most d-series parts work on it, as well as some older prelude parts(which many interchanges are from).

If you decide to go turbo, d-series civic kits will work with minimal modification.

Supercharger? Jacksonracing.com

N/A---www.dh-racing.com, they have a lot of head work and other internals made specifically for the zc.

Ask 1phatcx, if you need more help./ He has a ZC in his car now, plus he has had it a heck of a lot longer than the month i had it in!

[kingpinn]

thanks guys that helps alot but what happens if somthing brakes how do i fix that and you never said if it takes good to mods and my goal mid 14's

[kingpinn]

Aight mrceej question....i understand how your sayin the parts from the d16z6 bolt on the the ZC. Now...is that the dohc zc or sohc??? AND.... would the parts from the b16a1 bolt on to the zc... from what i heard the zc is the same motor as the b16a1 only the b16 has vtec. I also heard that you can put the b16 head on the dohc zc. now if im wrong please correct me im not 100% positive. its just things i've heard and things i assume.

Off the record this is not *kingpinn* so i dont wana make him look bad if i am really wrong or started ne drama. holla at cha boy

[travagliante]

Originally Posted by kingpinn

thanks guys that helps alot but what happens if somthing brakes how do i fix that and you never said if it takes good to mods and my goal mid 14's

Depending on model a stock car with a zc ***should*** run low 15's

Turbocharging it, mid 14s is easaly obtainable!!!

Depends on what breaks with what interchange to use. Unless you crack the block or head, there is almost an interchange for any part on it.

[CR50HC]

kingpinn,

I have a DOHC ZC in my CRX and have had really good luck with basic modifications. I could tell a noticeable difference in power output when I changed my exhaust system from the stock DX piping to 2.5 inch cat back. I again noticed an increase with an air intake and again with a chipped PR4 ECU. With these basic mods, I'd say the DOHC ZC responds well to modifications.

[kingpinn]

CR50HC what do you think you run give or take???

[kingpinn]

whats better sohc or dohc?

[91civichatch2571]

Originally Posted by kingpinn

would the parts from the b16a1 bolt on to the zc... from what i heard the zc is the same motor as the b16a1 only the b16 has vtec. I also heard that you can put the b16 head on the dohc zc. now if im wrong please correct me im not 100% positive. its just things i've heard and things i assume.

Off the record this is not *kingpinn* so i dont wana make him look bad if i am really wrong or started ne drama. holla at cha boy

No, the b16 and zc have nothing in common. no parts are interchangeable between B and D series motors. D series must stay with other d series parts and vice versa. Ive had 2 zc's (dohc) over the past few years. ive been damn happy with them. its not real easy, but they are capable of mid 14's naturally aspirated. mine has i/h/e, ported t/b and an fpr. without the fpr, i ran a 14.9. If you had all that an added a 50 shot, youd get around the mid 14's easy. As for replacement parts on the zc, theres a parts list in my sig that has everything from timing belt, water pump, distributor, etc, etc, etc. But most parts are either from an 88-91 civic/crx (parts on the block) or an 88-89 integra (head stuff). The only thing that the zc can use from a b16 is the cam gears.

[travagliante]

hmm thats wrong in the sense that you said b-series parts arent interchangeable. Because the 88-89 prelude parts are. Most of them-(in a gasket/belts)... But also the lude is not a "true b-series engine"

B16a head wont work on a dohc zc block,dont even try!

Whats better? sohc or dohc?
Well depends? For the most potential dohc all the way. But there are a lot of people that would say single cam? Just depends on you goals and money

[mrceej]

Originally Posted by travagliante

hmmm.....Were did you copy and paste that from...
HAHA!!!

Actually I sat there and thought it out since I have one (DOHC version)and put the basics of what I have learned along the way into that thought. If it sounds like I just copied and pasted it, it's probably because I'm older than you and can speak in a clear and proper manner when I feel like it . It's all good though, we know what each person on here means when they make a post.

Originally Posted by kingpinn

Aight mrceej question....i understand how your sayin the parts from the d16z6 bolt on the the ZC. Now...is that the dohc zc or sohc??? AND.... would the parts from the b16a1 bolt on to the zc... from what i heard the zc is the same motor as the b16a1 only the b16 has vtec. I also heard that you can put the b16 head on the dohc zc. now if im wrong please correct me im not 100% positive. its just things i've heard and things i assume.

Off the record this is not *kingpinn* so i dont wana make him look bad if i am really wrong or started ne drama. holla at cha boy

Someone had already answered this but in reference to the Z6, mainly it was a reference for a bolt on turbo kit (if you didn't want to have one custom fabricated). But the exhaust manifold bolt pattern is the same for all D-Series motors from 88-95 for sure and I believe it's still the same all the way through the 2000 model year. So to answer your question, it will work on both the SOHC and DOHC version. One thing I noticed though after installing my DC header, it didn't reach the cat (short by a couple of inches). It was more than likely because of the fact that my exhaust piping had been cut and welded a few times prior to the install but it wouldn't be a bad idea to compare the header with the stock manifold if you get one.

Having said that, if you want to custom one or do a "junkyard" turbo project, you can buy an HF or CX manifold and have a custom flange made to mount a turbo onto it (since the cat mounts on the front side of these motors, it works out as an alternative to buying a turbo manifold).

As for B16A parts interchangeability, only the cam gears would work as stated by 91civichatch2571. Again, it was just for reference to reinforce that you can do anything to a ZC that you would any other motor.

You can view the DOHC ZC as a B16A without the VTEC, but they aren't the same motor. When I had mine installed, by buddy who did the installation said when I'm ready to start modifying, the parts will more than likely be coming from a 1st gen integra or a D16A6/Z6. He said it would be a trial and error process for some things but to think of it this way, externally go 91 Si, internally, go 89 integ. Some of the parts are going to be both (like the pistons, but will vary compression) and some are going to be neither (like the timing belt) and some are going to be opposite (like the alternator).

Maybe you can clarify which motor you want since there is more than one type. Black top? Olive/Brown top? SOHC? DOHC? VTEC? NON VTEC?

Sounds like some of you guys want to flame me for answering a question as best as I could and trying to help someone out. Should I put my flame suit on?

[travagliante]

OMG!!! no the exhaust patterns arent the same, just because the bolt up doesnt mean that they flow properly....

Oh and also, being older doesnt make you smarter or speak better. It only would make one assume that you have had more time to learn and gain experience it writing better. And being older doesnt mean that you acutally learn from the "experience of being like 8 years older.

Externally go 90 si you said. No wrong. Try bolting a si intake manifold on a zc...not going to happen...

Let me quote what you said
"Maybe you can clarify which motor you want since there is more than one type. Black top? Olive/Brown top? SOHC? DOHC? VTEC? NON VTEC?"

He is talking about a zc... I have never ever heard, wait in fact there was never a dohc vtec zc made!!!! BTW the olive/brown top one from integras wont even bolt in!!!!!!!!!

The ZC's that were made were:
sohc zc (civic, and in 3rd gen integra Xzi)
sohc zc vtec
Black top dohc non-vtec zc(came in 4th-6th gen jdm civics and 2nd gen JDM integra)(yep this is the one)
88-89 Integra (black top Usdm integra) -Dont want!
86-87 Integra (vac activated dizzzy)Brown top dohc non-vtec zc(Dont want!)

I think you need to stop trying to bash on my posts becuase to be honest i dont think you know what you are saying. Also you must have read Info on the ZC of either zcresource.com or 4thgenerationcivic.com because it sounds almost identical of what i read off it. I dont really even car any more. Just dont respond and we can leave it at that.

[mrceej]

Dang sorry bro!! I'm not trying to bash on your post so no worries. This is a forum so people can learn from others and what not. Are we friends again? Truce brother, truce! LOL

As for the different ZCs that are out there, that is the exact point that I was getting at because they are not all the same. The original post never clarified which one, that's the point of asking. And for what you have posted on the different variations I agree whole heartedly and couldn't have said it any better myself. You covered them all! Good job! You are also correct about the supercharger, I do recall seeing that specific for the DOHC ZC. So my apologies.

If what I said sounds like it came off of another site or two then instead of claiming that I copied and pasted it (I'd love to see the info on any site word for word as I have stated it), isn't it possible that it's because the information is established and true? And aren't I backing up what is already established with modifications I've done myself and researched on my own time? My own process of trial and error? Do you need to see it to believe it or something? Then here you go:




If you need more, then I'll take pics when I pull off the head and compare what ever you like to my SOHC or my B-Series camgears for my EG.





I don't recall mentioning the exhaust "pattern" but I did mention the exhaust manifold bolt pattern as being the same. And you are correct, this will vary by application. For example using the Z6 manifold will have the exhaust gas hitting a "3mm wall" on each port and some may choose to dremel it out, use it as is, or just not use that particular piece. So yes, I do agree with you there. If you want, I can take pics of that as well.

Everything that everyone has posted on this thread is pretty much true. It sounds like most people know there stuff about the ZC. A person asked a question and I tried to answer it to the best of my knowledge instead of just posting a typical 2-3 sentence post. If it sounded like I tried to bash on your posts, for the record that was not my intention and I apologize if that's how you took it. But you accused me if copying and pasting it from some other site. Not true. So who is doing the bashing here? Me or you? Again for the record, I'm not mad at you for any of this but here you are taking my credibility. I guess it's better that I just don't post then right? No input is better than correct input. If this is the result for trying to help someone out than that's cool. This will be my last post as requested by travagliante.

[mrceej]

Sorry last thing before I go:

kingpinn:

I run a DC 4/2/1 header with 2.25 in piping on a universal muffler, Injen CAI, Act Street/Strip clutch with Extreme pressure plate, Clutchmasters 9lb flywheel, chipped PM6 ECU with 8200rpm rev limiter and removed speed governer, magnecor wires, and a modified B&M short throw meant for a GSR (long story) on my black top DOHC ZC motor. Along with a widebody with fender flares and after market body kit components, bondo, head light conversion, yadah yadah yadah, my best run was a 15.135 on the quarter mile. Hope that helps. Take care bro.