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Old 03-02-2010, 07:37 PM   #1
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Default Difference between JDM ZC and d16y8 engines?

I ordered a replacement engine from japanengine.com
As their name suggests, they sent me a JDM ZC engine that they said is for the same year as my civic: a 2000 EX.

When it got dropped off, my friend noticed that the crank angle sensor was missing, although the bracket on the side cover to hold the wire was there.

Does the JDM ZC motor have a place to put in the crank angle sensor? We're planning to swap over all of the missing parts and electronics from my y8: manifold, distributor, vtec, and other sensors. Just making sure that there'll be a place to put the crank angle sensor as well. Are there any other significant differences I should know about as well?

Thanks.
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Old 03-02-2010, 08:05 PM   #2
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Default Re: Difference between JDM ZC and d16y8 engines?

Umm... Isn't the ZC the only d series DOHC motor? I would imagine that's quite a difference. I was also under the impression the ZC is not a vtec head so I don't think you can move that.
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Old 03-02-2010, 08:08 PM   #3
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Default Re: Difference between JDM ZC and d16y8 engines?

Check the year of that engine

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Old 03-02-2010, 08:12 PM   #4
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Default Re: Difference between JDM ZC and d16y8 engines?

Quote:
Originally Posted by austinkli View Post
Umm... Isn't the ZC the only d series DOHC motor? I would imagine that's quite a difference. I was also under the impression the ZC is not a vtec head so I don't think you can move that.
This is why we're confused. We found nothing about VTEC ZC motors and I looked at the VTEC solenoid placement on my motor and the ZC and it has the holes for it. I'll have my friend check that manufacturing date tomorrow.
When I research online I only find that there's a dohc ZC and a non-vtec sohc ZC and none made in the 96-00 era.

The guys have a strong positive reputation, so I'm really confused.
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Old 03-03-2010, 03:49 AM   #5
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Default Re: Difference between JDM ZC and d16y8 engines?

There were JDM OBD2 Non Vtec ZCs. I have yet to see an OBD2 Vtec ZC though. OBD2 JDM engines do not have a CKF sensor or provisions to mount one. You can either perform the CKF fix shown here ---> http://technet.ff-squad.com/ckftrick.htm

or buy a USDM oil pump. You can easily identify whether the engine is OBD1 or OBD2 by the location of the dipstick btw. OBD1 D-series engines have the dipstick on the front of the engine between the 2nd and 3rd runners of the exhuast manifold. OBD2 D-series engines have the dipstick on the side by the oil pump.
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Old 03-03-2010, 04:06 AM   #6
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Default Re: Difference between JDM ZC and d16y8 engines?

Jdm zc came vtec???? i know they came in sohc and dohc form.
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Old 03-03-2010, 09:50 AM   #7
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Default Re: Difference between JDM ZC and d16y8 engines?

Quote:
Originally Posted by 94EG8 View Post
There were JDM OBD2 Non Vtec ZCs. I have yet to see an OBD2 Vtec ZC though. OBD2 JDM engines do not have a CKF sensor or provisions to mount one. You can either perform the CKF fix shown here ---> http://technet.ff-squad.com/ckftrick.htm

or buy a USDM oil pump. You can easily identify whether the engine is OBD1 or OBD2 by the location of the dipstick btw. OBD1 D-series engines have the dipstick on the front of the engine between the 2nd and 3rd runners of the exhuast manifold. OBD2 D-series engines have the dipstick on the side by the oil pump.
It's on the right side, exactly where the dipstick on my y8 is. So I'll need to buy an oil pump? can I just transfer mine from my y8 and the crank position sensor with it? I have to core exchange, so I have no problem taking everything out of my y8 and putting it on the ZC.
If it's any indicator, the block had the ZC under its serial number instead of on top like most pictures of ZC's I've seen.
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Old 03-03-2010, 10:02 AM   #8
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Default Re: Difference between JDM ZC and d16y8 engines?

ehh, i'm not familiar with an obd2 ZC with vtec, however - pop the valve cover and look at the cam. if there are vtec lobes, then you have a vtec head. i think i read correctly that you said there isn't a vtec solenoid in place on the engine you got, but there are holes? are they bolt holes or bolt holes and ports, etc? it should be pretty easy to see if there is a port for the oil, etc that would be 'coerced' into the head by the vtec solenoid. it should look like it had oil in that area. weird that it would be missing if it indeed is a vtec head.
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Old 03-03-2010, 10:29 AM   #9
 
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Default Re: Difference between JDM ZC and d16y8 engines?

the zc is a dual cam motor and the y8 is a single cam. the zc in non vtec and the y8 is vtec
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Old 03-03-2010, 10:31 AM   #10
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Default Re: Difference between JDM ZC and d16y8 engines?

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Originally Posted by boxeocampeon View Post
the zc is a dual cam motor and the y8 is a single cam. the zc in non vtec and the y8 is vtec
you obviously don't know that zc's came in sohc as well!!!

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Old 03-03-2010, 11:27 AM   #11
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Default Re: Difference between JDM ZC and d16y8 engines?

OP, please post some pictures of this engine.

EDIT, if you already did, sorry...I can't see pictures. All images are blocked while I'm at work
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Old 03-03-2010, 11:41 AM   #12
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Default Re: Difference between JDM ZC and d16y8 engines?

Quote:
Originally Posted by andoxviii View Post
OP, please post some pictures of this engine.

EDIT, if you already did, sorry...I can't see pictures. All images are blocked while I'm at work
no, he didn't.
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Old 03-03-2010, 01:00 PM   #13
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Default Re: Difference between JDM ZC and d16y8 engines?

Yeah it's at the shop right now, I won't have time to drop by until Friday.
Where the VTEC should be is 3 holes for bolts in a triangle pattern like it is for mine and there's 3 holes in the middle of them aligned vertically. Is that how it should be? I didn't take my VTEC solenoid off to look, but I recognized the 3 bolt points.
I assume this location shouldn't have anything there if it was non-vtec.
Other than saying ZC instead of d16y8, it looked exactly like my engine. When I called them about it being a ZC, they said we'll need to transfer my VTEC over, but the VTEC points would be there.

My friend popped the covers off and found the oil pump with no crank sensor, I'll either need to drop by to confirm if it has a place for sensors already or we'll find out when I drop my car off for the swap. He just said there's no sensor and wasn't sure if there was a place to bolt on a crank sensor.
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Old 03-03-2010, 03:12 PM   #14
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Default Re: Difference between JDM ZC and d16y8 engines?

Quote:
Originally Posted by jtchinoy View Post
It's on the right side, exactly where the dipstick on my y8 is. So I'll need to buy an oil pump? can I just transfer mine from my y8 and the crank position sensor with it? I have to core exchange, so I have no problem taking everything out of my y8 and putting it on the ZC.
If it's any indicator, the block had the ZC under its serial number instead of on top like most pictures of ZC's I've seen.
You can reuse the Y8 oil pump, but if your Y8 died from a spun bearing I wouldn't reuse the pump. honestly the CKF trick I linked to in my last post is probably the best way to deal with it. Post pics of the engine, preferably where the vtec solenoid bolts on.
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Old 03-03-2010, 04:00 PM   #15
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Default Re: Difference between JDM ZC and d16y8 engines?

I'll be sure to take pictures of it when I can.
I'd feel better if the CFK was actually there. It should plug right to the harness if I transfer the y8 pump and CFK over, right?

also here's a quick paint of how the holes look until i get a picture:

Click the image to open in full size.
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Old 03-05-2010, 06:48 PM   #16
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Default Re: Difference between JDM ZC and d16y8 engines?

Alright I was able to take some pictures of the engine today. We looked for the circles with the manufacturing date, but it wasn't easy to read. My picture of it got blinded by the flash. Didn't realize this until now. Here's the pictures though:
Click the image to open in full size.
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Click the image to open in full size.
Click the image to open in full size.
I brought a picture of where the CFK is located from the service manual and that point is on the oil pump, so I'm glad that's there. If anything looks out of place aside from a missing bolt on the intake side, let me know.
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Old 03-05-2010, 08:55 PM   #17
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Default Re: Difference between JDM ZC and d16y8 engines?

Quote:
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Alright I was able to take some pictures of the engine today.
well, yeah - that looks like an obd2 vtec head. i see swirl ports (each intake port has two paths and one path is longer than the other, per port) and the cam is a vtec cam.
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Old 03-06-2010, 02:49 AM   #18
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Default Re: Difference between JDM ZC and d16y8 engines?

Just waiting for a timeslot to open so he can work on my car then I should have it all swapped out by the end of the week.
Afterwards I'll replace my fuel injectors and fuel filter to make sure everything's fresh.
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Old 03-08-2010, 01:42 AM   #19
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Default Re: Difference between JDM ZC and d16y8 engines?

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Old 03-08-2010, 02:42 AM   #20
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Default Re: Difference between JDM ZC and d16y8 engines?

i just did the Crank sensor bypass on my 97 civic w/ d16y8 and it worked flawlessly, no CEL and idled/ran perfect for exactly a week. now it's throwing code 9, cylinder position sensor, which is located inside the distributor. I don't know if it's a related issue from bypassing the Crank sensor, but it makes me wonder. that motor looks super clean, and is for sure a vtec motor. good luck on the swap!
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Old 03-10-2010, 02:02 AM   #21
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Default Re: Difference between JDM ZC and d16y8 engines?

Quote:
Originally Posted by vindicatedteg View Post
i just did the Crank sensor bypass on my 97 civic w/ d16y8 and it worked flawlessly, no CEL and idled/ran perfect for exactly a week. now it's throwing code 9, cylinder position sensor, which is located inside the distributor. I don't know if it's a related issue from bypassing the Crank sensor, but it makes me wonder. that motor looks super clean, and is for sure a vtec motor. good luck on the swap!
Thanks! As simple as it would be, I'd still like to have the actualy CFK censor, especially since we confirmed it has the point to put it on. I just dropped off the car today, I should be getting it back in 2 days. I'll update you on how it is when I get it back!
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Old 03-10-2010, 10:10 AM   #22
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Default Re: Difference between JDM ZC and d16y8 engines?

hey the zc in soch dont came v-tec if you want to put it v-tec you have to take your y8 head with everything that it come over it and put on your zc, the other engine that came v-tec is the d16z6, and that one came with 92-95 civic ex OBD1, so you can make a frankestain with that lol, you groing up in compresion and HP
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Old 03-10-2010, 10:18 AM   #23
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Default Re: Difference between JDM ZC and d16y8 engines?

Does anyone know if they have a p28 ecu in Japan? The head has p28 on the side by the cam gear.
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Old 03-10-2010, 11:36 AM   #24
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Default Re: Difference between JDM ZC and d16y8 engines?

zc is non vtec i have one in my coupe. just do a minime swap with a z6 or y8 head
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Old 03-10-2010, 01:33 PM   #25
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Default Re: Difference between JDM ZC and d16y8 engines?

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Does anyone know if they have a p28 ecu in Japan?
Not that I am aware of. They would have had something similar, but tuned for a different altitude and most likely for a single wire unheated O2 sensor and no Evap purge valve.

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zc is non vtec i have one in my coupe. just do a minime swap with a z6 or y8 head
What part of the OP has a SOHC Vtec ZC didn't you get? ZCs came in SOHC non-vtec and vtec varieties as well as DOHC non-vtec.
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