ED-EF Swaps 1991 and older Civics, CRXs

Help with ZC swap

Old 11-24-2007, 06:50 AM
Thread Starter
Join Date: Oct 2007
Posts: 101
Default Help with ZC swap

I am looking for an inexpensive swap with a motor that has a little more power than the d series. I was looking at the ZC swap I just don't know what all you need. Do you need different axles or anything like that. I would be swapping it into a "89 STD hatchback. Is it even worth it to do the swap. Thanks, Jacob
Old 11-24-2007, 11:21 AM
Hailchristian's Avatar
HCF Member
Join Date: Nov 2006
Location: San Luis Obispo, Ca
Posts: 1,693
Default RE: Help with ZC swap

well, i am doing the DOHC swap right now and let me just say..it sucks having a std.

Here is what you will need for DOHC..i dont know about sohc
If you have a std then you are going to want to do a transmission swap as well since the std transmission is long geared and not very agressive. You have 3 other options

•ZC trasmission (probably about 150) this of course will need custom axels
•SI transmission from 89-91 (junkyard 100 bux) this will use your exsisting axels
•DX transmission from 89-91 (junkyard 100 bux) this will also use your existing axels

Now the STD axels arn't that great, they are very small but you gatta go through switching hubs and all that if you want to upgrade your axels.

The SI tranny will be your best bet but the DX isn't that bad either. The only differentce between the dx and the si is the final gear, other wise they are basicly the same.

As for the ECU, you have 3 options again. Basicly you will be setting your car up for MPFI from DPFI. 4 injectors instead of 2. You will be looking at the ZC ecu which has a 112mph limiter but works the best with the ZC engine since it was made for it. You could use a 88-91 civic SI ecu which will work ok. but In my opinion the best option would be a 88-89 acura integra ecu. This is off a car using D16a1 which is the closest engine you will find to the ZC. This is aggressive and it has no limmiter (like it really matters)

your stock header will work you just have to port it a bit, not to much. Other option would be to get an after market header such as a 4-2-1 or a 4-1 from an 88-89 integra.

the last part of ZC in a std is you have to wire up the MPFI. There are many tutorials on this and I cant really give much info on it because I have not done it yet. Hoping to get this bad boy in by christmas.

So thats basicly what you need. Otherwise the engine drops right in and uses the exact mounts as your current engine. You will need to cut some webbing out of your hood (or get a zc carbon fiber hood) so your timing belt doesnt rub against it.

Just remember that when you start this swap to have money and look over things a lot before you buy them.

The engine i bought had no gaskets so i had to buy head, exhaust, and intake gaskets. I didn't know what to look for so it had no injectors or a fuel rail. I found a broken camshaft and that has been a pain in the *** to fix. Didn't come with a distributor. It is a big hasel to get all these parts so if i were you, or if i had to buy this engine agiain, i would buy from Hmotorsonline.com or a local engine dealer if you could.

Thats basicly it. Some of the best recourses on the web for this swap are these 2..they will get you through it.


if you were looking at sohc zc...sorry.lol

Old 02-12-2008, 01:51 PM
Junior Member
Join Date: Jan 2007
Posts: 21
Default RE: Help with ZC swap

what is STD???? do you mean standard transmission or is that another kind of civic? I did a DOHC ZC into my DX, didnt have to mod. the hood or anything, used my DX tranny too which isnt terrible, I still like to get some gas mileage
Old 02-12-2008, 01:53 PM
Hailchristian's Avatar
HCF Member
Join Date: Nov 2006
Location: San Luis Obispo, Ca
Posts: 1,693
Default RE: Help with ZC swap

yeah...std is a type of civc...what i have...

std is base model (4 speed manual dpfi)
DX is up a little (5 speed dpfi)

and if you had a dx you did have to do mpfi wiring unless it was already done
Related Topics
Thread Starter
Last Post
EG Swaps
02-07-2010 06:01 PM
Transmission & Differential
09-12-2009 01:18 PM
Mechanical Problems & Technical Chat
12-04-2006 03:55 PM
EK Swaps
09-26-2006 05:33 PM
New Member Introductions
07-04-2005 10:35 PM

Thread Tools
Search this Thread
Quick Reply: Help with ZC swap

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.