S14 DE into 89 SOHC Coupe HELP

[Simon Tibbett]

Ok, I am getting a S14 KA24DE for my 89 coupe, which is currently just the stock E.

Anyway, my question is what all has to be changed for the swap? It comes with the full complete wiring harness and the ECU.

Do I need more?

Any help greatly appreciated!

[whomiked]

need s13 dohc harness and ecu. s13 distributor. s13 dohc intake manifold. s13 dohc maf

[dct223]

wrong...

you dont need to do hybrid crap like whomiked said

run all s14 stuff, s14 intake manifold, distributor, maf, ecu, harness etc.. you have to modify the F4 plug, i think theres a writeup at jim wolf, and of course match colors that go to your gauge cluster, not sure about the plugs to the body harness, but that is straight foreward if you have to do that too.

[nrg]

IIRC, whomiked, that only works if the ka24de was obdII

[dct223]

again... nrg.. thats wrong info, my friend put in a OBDII s14 KA in his 89 S13 using all s14 stuff. I saw it and drove it personally

[projectRDM]

I love mixed info.


What you will need:

S13 DOHC steering lines
S13 DOHC tach

You can use the S14 ECU and harness, but it's a lot more work since the chassis plugs are different. Since you're even asking and not reading the numerous threads we've already discussed this in I'm going to assume you're not capable of doing the wiring. In that case, you will also need:

S13 DOHC ECU and harness
S13 DOHC coil, distributor, and MAF

If you want to keep A/C you'll also need S13 DOHC evaporator, condensor, and all lines.

Whichever way you go, you'll also need a full manifold/donwpipe from either chassis, or a header of some kind. Intake manifold can be left as is, but if it's a 96-98 you'll have to swap the TPS and CTS and use the S13 O2. You'll also have to plug several vacuum ports up.

If there's still questions, read the numerous threads where this has been beaten to death instead of creating a new one.

[Five_5Zigen_4]

IF you plan on goin s14 wiring, you'll need to splice in the f8 and f9 connectors from the s13 harness onto the S14 harness (These connect to the plugs on the right fender, right by the battery). Those have wiring for your ignition and what not...One of the guys on here sent me a write up on what he did. Its a pretty complicated swap...i've been working on mine for quite a few months now, seeing as how i dont get much time to work on it, let alone funds for things i want to do to it. Right now i plan on (well, i've already started on it) making a switch box for my ignition, ecu power, and fuel pump, as well as some various accessories that it will use in the future. Which actually leads me to a question, but i won't hijack your thread ;)

Good luck with the swap man!

[Simon Tibbett]

I didnt find a thread for swapping this motor from a SOHC just swapping S14 DE's for the S13 DE's. Maybe I missed some. And I am capable of wiring, this is my first Nissan swap, but have dpne millions of Honda swaps.

[Simon Tibbett]

...and thanks for all the help!

[[email protected]]

IF you plan on goin s14 wiring, you'll need to splice in the f8 and f9 connectors from the s13 harness onto the S14 harness (These connect to the plugs on the right fender, right by the battery). Those have wiring for your ignition and what not...One of the guys on here sent me a write up on what he did. Its a pretty complicated swap...i've been working on mine for quite a few months now, seeing as how i dont get much time to work on it, let alone funds for things i want to do to it. Right now i plan on (well, i've already started on it) making a switch box for my ignition, ecu power, and fuel pump, as well as some various accessories that it will use in the future. Which actually leads me to a question, but i won't hijack your thread ;)

Good luck with the swap man!
hey can u send me that write up plz i am [email protected]

[srs14]

beats me i only mess with sr's

[Five_5Zigen_4]

Yeah, i'll dig up that write up for ya...if anyone else would like it, let me know!

Also, you might want to invest in a throttle cable from an s14 as well, because the one in the coupe is a bit short, and ends up running up over the motor. So unless you like your engine bay cluttered, id suggest it ;)