JDM Zenki S14 SR20DET swap into a DOHC S13

Re: (acattackgs)

mestizo — 2009-10-22T21:17:01-08:00

All the connections are on the first post of this thread, instead of asking me questions about which wires and plugs I am talking about just go back over your connections using the diagrams on the first post.

From the sound of what your describing it sounds like the connections are not correct.

Re: (mestizo)

acattackgs — 2009-10-22T12:12:21-08:00

Quote, originally posted by mestizo raquo;

The injectors see +12 when the key is on thru the red/blue wire.

Injectors are not seeing +12v at the red/blue wire on grey power plug? Its red/blue on chasis side, connecting to green/blue on harness side. I hooked the green blue which wasnt going to anything to the black/red so it would have 12v at key on. Went to fire it up, and still no fuel.

Modified by acattackgs at 2:51 PM 10/22/2009

Re: (acattackgs)

mestizo — 2009-10-21T21:24:42-08:00

Quote, originally posted by acattackgs raquo;

relays only click as you turn the key off, so i dont know what the issue is there. I do have a multi meter so im gonna start troubleshooting in a bit. You happen to know what readings the injectors are supposed to get off the top of your head.

The injectors see +12 when the key is on thru the red/blue wire.

Re: (mestizo)

haggard240 — 2009-10-21T12:39:42-08:00

Quote, originally posted by mestizo raquo;

Use should use the harness that matches your particular chassis, but the power plugs in the engine bay are the same on the DOHC and SOHC harness so either can be used. The difference is the interior plugs, but like I stated in the first post you can pretty much color for color match the DOHC and SOHC interior plugs or just get the SOHC interior plug pinout and use that instead of my pinout.

thanks man! this helps me out alot.. i'm still not sure if i'm ready to try this or not yet i'm going to read it more and decide i should be able to do it but we'll see.

Re: (mestizo)

acattackgs — 2009-10-21T12:07:32-08:00

Re: (acattackgs)

mestizo — 2009-10-21T11:12:35-08:00

Code 55 means everything is ok. The only thing I can tell you is to go back over your wiring and recheck what you connected. Unless you have a multi meter then you can test to see if the injectors are getting power. Also the blue power relays should click when you turn the key on and then again when you turn the key off.

Re: (mestizo)

acattackgs — 2009-10-21T04:23:31-08:00

So i finished the wiring via your guide a while ago, just got around to finally finishing other stuff to get the motor running. Went to start it up, and it has spark but no fuel. I pulled plugs and turned key to on, heard the pump prime, but i dont see any fuel going into the cylinders. All grounds attached, No ecu codes other than 55. Any ideas?

forgot to mention, the blue relays dont click when u turn the key to start, but do click when you turn the key in off position. Sound about right?

*update* Im getting fuel to fpr and rail, lines are hooked up right, injectors seem to be the problem.

Modified by acattackgs at 9:50 AM 10/21/2009

Modified by acattackgs at 10:36 AM 10/21/2009

Re: (haggard240)

mestizo — 2009-10-16T20:50:10-08:00

Re: (mestizo)

haggard240 — 2009-10-15T18:04:17-08:00

so when i do this i have a sohc car.. i can use my sohc harness right? or best to use a DOHC ?

Re: (nissansx0nor)

mestizo — 2009-09-17T21:41:32-08:00

This write up is not for the SR that you have, I am not sure what that resistor is. I have not wired up an S13 SR personally, I only watched and I don't remember seeing that resistor on the swap my friends did.

Re: (mestizo)

nissansx0nor — 2009-09-17T14:40:28-08:00

Hey, sry for the wait
The swap is from a jdm180sx blacktop (man gear), so must i use the resistor from the sr20det swap on the (sr20det) engine??

(But what is it for, if its not a resistor)

*i cant find where the resistor (resistor pack for the injectors) belong in the (wiring/cable) to the engine.
(if i need to use it tho

il try my best on write english

http://s692.photobucket.com/al...r.jpg

Modified by nissansx0nor at 2:46 PM 9/17/2009

Modified by nissansx0nor at 2:50 PM 9/17/2009

Modified by nissansx0nor at 3:18 PM 9/17/2009

Re: (mestizo)

nissansx0nor — 2009-09-17T13:58:44-08:00

Quote, originally posted by mestizo raquo;

Hmm I am not sure what your talking about? Have any pics of what it is you are talking about? If so that will prolly help, but I also have another question, is your SR swap from an S13 or S14?

Re: (acattackgs)

mestizo — 2009-09-16T17:09:38-08:00

The heater hose connections can go eather way, the way I ran them was to make the outlet off the motor go to the top fitting of the heater core so gravity would help pull the coolant down. But I don't see why it can't go either way, and I have read many threads where people say that it doesn't matter which side goes where.

As for the S13 relays just leave them in place, they need to be there in order to make this all work.

Re: (mestizo)

acattackgs — 2009-09-16T15:56:17-08:00

First off i would like to say thanks. I like to do as little wiring as possible because wiring has never been fun for me...lol I have the Harness complete, follow your guide to a Tee. Wiring was easy enough and even i cold fig it out. My only question is about the blue relays. I know you kept the s14 ones because you also wanted to do as little wiring as possible, now what to do with the s13 ones? Just leave them as they are?

One last thing, could you take a pic or explain to me which heater hose goes to which port on the heater core? Lets say #1 is closest to motor, and #2 to the shock tower, now which one goes to top/bottom of heater core?

Re: (nissansx0nor)

mestizo — 2009-09-14T14:26:33-08:00

Hmm I am not sure what your talking about? Have any pics of what it is you are talking about? If so that will prolly help, but I also have another question, is your SR swap from an S13 or S14?

Re: (mestizo)

nissansx0nor — 2009-09-14T12:32:18-08:00

i use the Resistor that was with the sr20det swap, but i cant see where it belong?

btw (i dont use the resistor from ca18det, it has 5 wires).

Re: (nissansx0nor)

mestizo — 2009-09-14T12:13:50-08:00

If you're talking about the injector resistor from your CA then you don't need it with the SR swap.

Re: (mestizo)

nissansx0nor — 2009-09-14T05:51:32-08:00

Hey Mestizo,
I got something for you :D

*i have a 200sx s13 91 mod LHD ca18det ok! now i have buyed a sr20det blacktop to put in the car, i have all that is needed for the swap wiring (myself) and eccu/ecu.

My question is: where do i put the Resistor?? the resistor from sr20det have only 2 wires, and i cant find where it must be connected.

(i havent had start on the car yet, still some work toodo),

Thx for posting the wiring howto

Regards From Norway

Re: (audiman)

mestizo — 2009-08-24T17:48:35-08:00

What I am saying is I don't know the difference between the Zenki and Kouki S14 SR interior and ecu plugs. I don't have a Kouki SR so I have never seen the plug nor have I downloaded the Kouki pinout.

What you need to make the two work is the FSM of you car chassis and then the FSM of the motor you are going to put into your chassis.

Re: (mestizo)

audiman — 2009-08-24T13:08:30-08:00

So you mean it is not the same as a Zenki? I do not really understand your answer

Re: (audiman)

mestizo — 2009-08-24T10:56:12-08:00

You will need to get the Kouki ECU and interior plug pinout as well as the the pinout for your chassis to wire it up.

Re: (mestizo)

audiman — 2009-08-23T13:15:12-08:00

Hy,

I'm trying to do my CA18DET to SR20det swap. I have purchased a SR20DET bud it is a kouki engine whit a smaller ECU plug. Dow somebody know the deferents and somebody know of this guide also work whit a kouki SR20DET engine?

thanks,

Roy

Re: (newdude1)

mestizo — 2009-08-15T10:25:40-08:00

If you ecu doesn't have hte knob then the only way to check codes that I know of is to hook up the consult wires and connect a consult to the ecu to pull the codes.

newdude1 — 2009-08-14T21:29:28-08:00

I dont think the s14 ecus have that screw on the ecu. Atleast I dont see it on mine. Does yours have it?

Re: (newdude1)

mestizo — 2009-08-14T16:29:54-08:00

A search on this site gave me this link...

http://forums.nicoclub.com/zerothread/60332

newdude1 — 2009-08-14T15:58:33-08:00

Sorry for the noob questions but how do you put it into diagnostic mode?

Re: (newdude1)

mestizo — 2009-08-14T15:39:09-08:00

Same way you check them with the stock ECU. Turn the knob to put the ECU into diagnostic mode and count the CEL blinks.

newdude1 — 2009-08-14T13:35:03-08:00

Hey dude how do you check your codes?

Re: (newdude1)

pauliedrft — 2009-06-24T03:42:48-08:00

Did you send it to yuri at wiring specialties ?

Yes it is funny that we come to your thread at least were keeping it alive .

Re: (newdude1)

mestizo — 2009-06-23T15:55:44-08:00

In my write up you cut and splice the wires. This is explained on the first page where to cut the factory harness plugs so you can connect the right wires to each other to make it a plug and play harness.

At this point you will need to look at your harness for the CEL wire leading from the ECU and splice/connect it to your interior plug in the right position.

LOL what's with this trend of people sending their harness out to get done and then they get it back and still have to come to my thread to get help?

newdude1 — 2009-06-23T14:46:55-08:00

Sorry Im a noob at wiring. But how do put the wires on the right pin?

I know on the s13 interior plug the check engine lights is the red wire and on the s14 its the orange one. I just dont really understand how to get them to line up basically. Also I had my harness shipped out to get it done. But was told that the check engine light wasnt wired up.

Re: (pauliedrft)

mestizo — 2009-06-23T11:41:25-08:00

I am fairly sure that you can go to Nissan and ask for the ECU relay from an S14, that should fit the relay plug you have. However one of the blue relays on my harness had a broken plug so I replaced it with a spare relay that I pulled out of the under hood fuse box of an S13 at the junk yard. Just about any relay that fits that plug should work.

As for the O2 sensor there is a parts interchangabilty thread on here somewhere. From my experience tho any O2 that threads in to your down pipe and has the correct plug will work. I have done this twice with no problem.

Re: (mestizo)

pauliedrft — 2009-06-23T03:50:22-08:00

that man is hard to get a hold of i sent him a email and it took 2 days to get back . No offense to him but hes a busy man And it adds some tech to the thread imo .So if i just buy one form Nissan .I should just say the light blue relay im guessing .It only has 4 plug holes in it .Thnaks for the help and another ? what o2 censor can i use with this engine the 1995 plug ion a 300zx tt looks exactly like my plug ? Thanks for the help .(my engine had a 4 wire o2 in the stock down pipe said japan on it .)

Re: (pauliedrft)

mestizo — 2009-06-22T13:38:05-08:00

A standard boshe style relay is rated for around 30 Amps if I remember right and I would think the Nissan relays are around the same however I do not know for sure. But yes you should be able to wire a standard relay in it's place.

As for the cost of the relay at Nissan I don't know either, but I would venture to guess that they would be expensive. I bought one of the large fuses from the dealer and it was $18. lol I won't do that again, so now I just go to the junk yard and pull the relays and fuses from the cars out there.

Also how come Yuri didn't explain any of this to you? I mean if you paid for the service I would think he could explain what that relay does right?

Re: (mestizo)

pauliedrft — 2009-06-22T13:24:21-08:00

Mine only has only on i covered it with yuri . What is the amps on it and can i use a regular relay as long as the amps are thee same ???? And how much would it cost for a blue one from nissan??????

Re: (pauliedrft)

mestizo — 2009-06-22T10:41:19-08:00

Um it is a relay... lol you already said what it is. Are you asking what the relay powers/triggers? If so then there are 2 blue relays, one powers the ECU and the other is for the ignitor chip/coil packs.

Re: (mestizo)

pauliedrft — 2009-06-22T03:18:13-08:00

Ok guys i need to know about this blue relay Yuri is talking about .(yes i send my harness out ;I didn't want to deal with wiring it up , do all the other shizz i did .)But i need a blue relay gos by the ecu inside the car .any one know what it is .

Re: (newdude1)

mestizo — 2009-06-21T12:40:45-08:00

Yes the SOHC wire color on the interior plug is Red which is for the CEL, same color as the DOHC CEL wire.

Re: (mestizo)

newdude1 — 2009-06-21T06:58:56-08:00

K well my car is a 90 so it has the sohc wiring harness. Is it still the same wire that I would use to hook up the check engine light?

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (fc3s4life)

mestizo — 2009-05-22T11:22:48-08:00

Thanks for the compliments everyone! I'm glad my write up helped you wire it up, that is what I made it for was to help out the community.

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (mestizo)

fc3s4life — 2009-05-22T00:57:03-08:00

id just like to say thank you for this wright up ive just finished wiring my friends sr and everything works just as it should and this is my first sr swap i also would like to add that i do not own a nissan i own an rx7.....sooooo thank you!!!!

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (silviaziz)

mestizo — 2009-05-13T17:19:24-08:00

Like I was saying before, you can hard wire it in but you need to find out if the zenki and kouki maf's run the same voltage input and output signals, if so then yes it will work. If not then you need to do a MAF hack or something else that will compensate for the difference.

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (mestizo)

silviaziz — 2009-05-13T15:53:38-08:00

Thanks for the fast response. I found out that I have a Zenki Maf and a Kouki wiring harness and ECU. Can the MAF be hard wired in? Any suggestions would be great.

Thanks again.

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (silviaziz)

mestizo — 2009-05-12T21:25:02-08:00

Your harness may have been modified at some point for a different MAF or the place that sold it to you switched the MAF for whatever reason is all I can come up with for why it doesn't plug right in. As for hardwiring it in to your harness I don't know if that will work, you need to find out what maf you have and do some research to find out what it's from and if has the same voltage reading as your stock setup or if you need to do a MAF hack to make it work with what you have.

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (mestizo)

silviaziz — 2009-05-12T16:59:11-08:00

Mestizo,

I'm having a shop install my s14 into my s13. They seem to have everything figured out. The only problem seems to be with the MAF plug and MAF sensor. The plug does not "fit/hook up". I believe I have a Zenki front clip, and I know that the MAF sensor itself comes out of a Zenki (I checked the part #). I have to check to see if my engine has "fins" or not and also check the plugs to see if I have a Zenki or Kouki harness.

If I do have a Kouki harness, should i just "hardwire" the MAF "plug" into the MAF or should I purchase a Kouki MAF.

Also, if I do have a Zenki harness, then why would the plug not hook-up?

Any ideas would be very helpful.

Thanks

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (mestizo)

NAKA24DE — 2009-03-28T12:19:58-08:00

I have to give an A+ to mestizo !!! I just got done with my Brothers '91 240SX / Zenki SR20DET swap ... I folowed the wirring on this post exactly and it started first try , runs perfect .... All works just as stock ... I have yet to get my scanner hooked up to see if that part works ... But so far everything is great ..... I have to give a HUGE Thanks ..... the last few SR swaps I have done have taken tripple the time to wire , this write up saved me Hours !!!

Thanks x10 !!

Re: (yabeet)

yabeet — 2009-02-19T18:09:11-08:00

Just got my brand new engine harness today, I will soon be trying to do this successfully first time, wish me luck!

Re: (92vert240)

yabeet — 2009-02-01T11:02:19-08:00

Quote, originally posted by 92vert240 raquo;

Well for anyone following my posts, i missed pin 45 like i said in the previous post. Wired that one in and it started up instantly!!!!

Thanks so much for everything and sorry for the headaches i caused lol.

Congrats bro, must be the biggest and best relief!! Have a good time with the S14.

92vert240 — 2009-02-01T10:33:08-08:00

Well for anyone following my posts, i missed pin 45 like i said in the previous post. Wired that one in and it started up instantly!!!!

Thanks so much for everything and sorry for the headaches i caused lol.

Re: (Type X(J))

sileighty85 — 2009-02-01T06:30:26-08:00

Quote, originally posted by Type X(J) raquo;

quick question - which oil filter did you use? I bought a purolator 14477 (its for the early se-r) but it doesn't fit right - treads different. thanks for the help!

go to the dealer with this part # 15208-65f00. it's the same oil filter as a 98 SER and a new USDM 350Z.

Re: (mestizo)

Type X(J) — 2009-01-31T17:29:10-08:00

quick question - which oil filter did you use? I bought a purolator 14477 (its for the early se-r) but it doesn't fit right - treads different. thanks for the help!

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (pauliedrft)

92vert240 — 2009-01-31T16:21:24-08:00

Well i fianally took the harness out and found that on the gray plug where is says to go pin 38 AND pin 40 on interior plug, i only connected 38. 40 goes to 45 on ECU which is ignition switch. So, hopefully that was the problem. We'll find out tomorrow.

newdude1 — 2009-01-27T17:26:33-08:00

Where did you connect the chains to when you put the sr motor ingt;?

Re: (92vert240)

Taylor_Durdan — 2009-01-26T08:05:12-08:00

wow.

as far as why to use the red wire as opposed to the black/white... its bc the red wire is constant battery voltage and the blakc/white is ignition hot only.

when it seems like there is no way to figure out why your harness doesnt work, email me and i'll give you a good rate for the work. it will be an OEM fit, plug and play harness with zero issues

taylor.durdan@gmail.com

Re: (mestizo)

92vert240 — 2009-01-22T16:05:13-08:00

Lets start from the beginning. With the entire harness and ecu out of the car, which pins on the s13 harness power plugs by the battery should i have power at? Key on/off? Or what voltage at what. This will be a good starting point. And let me just make a point that i do appreciate all the help!!! Thanks again . Tyler.

Re: (newdude1)

mestizo — 2009-01-22T11:39:22-08:00

Yes I hooked up everything to work as it did stock. To make the check engine light work its the red wire on the the DOHC S13 interior plug to the Pin 20 orange wire on the JDM S14 interior plug. If you go back to the 1st page of this write up it's in one of the wiring tables I made.

newdude1 — 2009-01-22T09:47:02-08:00

Did you manage to hook up the check engine light? If so how did you do that? I have my s14sr in my s13.

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (mestizo)

92vert240 — 2009-01-22T07:31:08-08:00

Quote, originally posted by mestizo raquo;

The way I did it is the way I did it... Everyone will do it differently from someone else, so there really is no need to ask me why I did it that way. But to answer your question I made the least amount of changes to the stock wiring as possible so that if a correction had to be made it would be easy to do. Also the way I powered the S14 harness is the same way it was powered from Nissan. I powered the factory relay's which in turn powered everything like it did when it was in the JDM S14 in Japan.

I don't know why you're having so many issue's with this, I have had nothing but positive e mails form people about the wiring write up. As well as I have web site statics from my forums that show where my write up has been linked and at least 4 different places people link to my write up and say that it works perfect.

I'm kind of pissed by all of this, I made this to help people not to make it more complicated or to give misinformation. Bottom line is I know this way works, it's worked in my personal car as well as several others who have thanked me for my write up. If it continues like this I will just delete this entire thread and stop trying to help people.

Im not knockin you for the write up. I know you know more than me about the wireing so i just figured ide ask. Im going to take the entire harness back out and de-loom it again and see whats up. Thanks.

P.S. DONT DELETE THIS!!!!!! lol

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (92vert240)

mestizo — 2009-01-21T20:10:11-08:00

Re: How to JDM Zenki S14 SR20DET swap into a DOHC S13 (pauliedrft)

92vert240 — 2009-01-21T16:48:37-08:00

Well i still havn't got my car running and i still cannot figure out why.

Why on the gray s13 plug did you use RED pin 3) ECU backup power wire to power pin 24 on the interior plug insted of pin 5) ECU power Black/White wire? Pin 24 on the interior white s14 plug matches up with pin 59 Black/White wire on the ECU. This seems to make more sense. Also, shouldn't pin 49 be included in this to recieve power as well? It says ECU power on that pin aso on the ECU diagram.

The pin above thoes, pin 58 says Power Supply (back up). It seems more logical to use the pin on the s13 gray plug that says ECU backup power.

You have nothing going to pin 49 which needs power. Correct me if im wrong but this seems to be the way it should be. Thanks. Tyler.