S13 KA into an S14

[Canaduh]

I recently came across an S14 (early 95) chassis that I couldn't pass up, the only issue was that I have an S13 Ka24de (wiring, ecu and all) (92) at my disposal. I can't seem to find anything on doing this swap and have only come across the opposite (I'm Canadian so laws don't affect what engine I put where). Anyway, I was hoping someone on this site would have knowledge of the modifications needed to get this motor working properly, especially wiring.
(I also have a an s14 driveshaft, s14 obd1 wiring harness and matching ecu to use)
Thanks in advance.

PS. I've searched, but if anyone finds an actual thread already dedicated to this please link me. Thanks :)

[projectRDM]

It's the same engine, and especially since it's a 95 chassis there's no OBD-II stuff to fool with.
I would use the 95 harness, all you'll then need is a distributor. If you must use the S13 harness/ECU you'll just rebuild the ECCS plugs to mate to the F3 plug inside. It's not hard but if you're asking you may not be ready for that, so you should probably take the easier route. You can sell the S13 parts and make enough profit to buy anything else you may end up needing anyway.

[Canaduh]

Ok, thanks. On the distributor subject, could I simply swap the plugs from the s13 harness onto the s14 one?

[projectRDM]

You can, but why? Do you also have the coil and power transistor?

[Gronde240]

yea i've heard of doing the opposite (95 in s13....ie my setup) but im sure it should work, like stated before the only prob u would have would be the distributor everything else should work (i guess im just repeating whats all been said) so i'll just say good luck with the swap and ask questions if they come up

[MURPHY]

hmm ok. so what if putting a 1996 s14ka obd2 engine into a 1995 s14 od1 car? im just trying to double check. would i still have to change intake mani etc like into a s13?

i can use 96 block with 95 head and no cel right? but what if i use the obd2 harness from the 96, will it all just plug into my other harnesses and work right?

[Canaduh]

So just trying to verify on the distributor plug question, will it work to switch the plugs?

[projectRDM]

To clarify your clarification, you want to use the S14 harness and ECU but with an S13 distributor, coil, and transistor, correct?

Yes, swap the plugs and it's fine. Or just sell all that and buy an S14 distributor.

[nismo tuned s14]

intake and exhaust mani need to be swapped as well. i did swap a few weeks ago

[sblack13]

not really for a 95, the intake manifold does'nt have all these funky sensors the 96-98 have. Anyways i have 2 95' distributors with plug wires. Which your gonna need to do the swap. Just like tps and such, you will need to swap your coolant sensors over, s13 won't work.

[projectRDM]

intake and exhaust mani need to be swapped as well. i did swap a few weeks ago

No, the 95 intake manifold is the same as the 91-94. Don't post information unless you know it's correct.

[youngmanvr4]

There is more to the s14 ka then you know in seems. If your using a s13 harness then it will work with out a problem. But if you put a s13 engine and use the s14 ecu and harness there is a little work you need to do. S14 trannys have a crankshaft sensor on the top of the tranny, S13's dont at all.

The circle is about where the sensor should be. This is a s13 tranny.
http://i86.photobucket.com/albums/k102/youngmanvr4/Tranny_1.jpg

This is a s14 tranny with the sensor.
http://i86.photobucket.com/albums/k102/youngmanvr4/tranny2_1.jpg

You can use a s14 tranny on a s13 but you cant use a s13 tranny on a s14 unless you drill and tap. If dont have that sensor plugged in, working, or even there you'll be throwing codes like crazy and will be going in to fail safe all the time. Not fun. But in your case your ok because you'll use the s13 ecu and harness.

[Gronde240]

No, the 95 intake manifold is the same as the 91-94. Don't post information unless you know it's correct.

thats right, for my 95 swap i have a s13 ecu, harness, maf, tranny, exhaust mani, power steering...im pretty sure thats everything, i might be leaving something out

[projectRDM]

There is more to the s14 ka then you know in seems. If your using a s13 harness then it will work with out a problem. But if you put a s13 engine and use the s14 ecu and harness there is a little work you need to do. S14 trannys have a crankshaft sensor on the top of the tranny, S13's dont at all.

The circle is about where the sensor should be. This is a s13 tranny.
http://i86.photobucket.com/albums/k102/youngmanvr4/Tranny_1.jpg

This is a s14 tranny with the sensor.
http://i86.photobucket.com/albums/k102/youngmanvr4/tranny2_1.jpg

You can use a s14 tranny on a s13 but you cant use a s13 tranny on a s14 unless you drill and tap. If dont have that sensor plugged in, working, or even there you'll be throwing codes like crazy and will be going in to fail safe all the time. Not fun. But in your case your ok because you'll use the s13 ecu and harness.

You're a fucking idiot too. There is nothing about the KA that I don't know, but there does seem to be a shit ton that you don't know. The crank position sensor does absolutely nothing to affect engine operation. It's used to diagnose misfire for the OBD system, that's it. Unplugged, plugged in, crushed into powder, or sitting in the trunk in a pool of urine there's no change to the car other than a CEL. And a KA ECU does not run in any kind of 'fail safe', it will go into open loop if the O2 sensor goes bad, but that's it. Otherwise a bad CTS, MAF, etc. will make it run like shit.

[youngmanvr4]

That was sorta childish. I dont even understand what your upset about.

There are somethings about the KA I dont know about. I'll be the first to admit that. But the reason why I even know about the crank position sensor is because I'm throwing codes 82 and 95. Look in your FSM, they are both crank position sensor codes and my car is running in open loop or in other terms; fail safe.

So why would I be going into open loop and my car running like crap when like you said "The crank position sensor does absolutely nothing to affect engine operation. It's used to diagnose misfire for the OBD system, that's it. Unplugged, plugged in, crushed into powder, or sitting in the trunk in a pool of urine there's no change to the car other than a CEL." but codes 82 and 95 are the only 2 codes I'm throwing which I'll remind you again are both crankshaft position sensor codes. So dont even tell me the the CKPS has nothing to do with how the car runs. You make no sense.

My original post was never directed at you or anyone else. Just because my post followed yours does not mean it was directed at you. So I dont understand why you are pissin on yourself about it.

[projectRDM]

That was sorta childish. I dont even understand what your upset about.

There are somethings about the KA I dont know about. I'll be the first to admit that. But the reason why I even know about the crank position sensor is because I'm throwing codes 82 and 95. Look in your FSM, they are both crank position sensor codes and my car is running in open loop or in other terms; fail safe.

So why would I be going into open loop and my car running like crap when like you said "The crank position sensor does absolutely nothing to affect engine operation. It's used to diagnose misfire for the OBD system, that's it. Unplugged, plugged in, crushed into powder, or sitting in the trunk in a pool of urine there's no change to the car other than a CEL." but codes 82 and 95 are the only 2 codes I'm throwing which I'll remind you again are both crankshaft position sensor codes. So dont even tell me the the CKPS has nothing to do with how the car runs. You make no sense.

My original post was never directed at you or anyone else. Just because my post followed yours does not mean it was directed at you. So I dont understand why you are pissin on yourself about it.


Read the FSM sparky, it clearly states that the CPS does not effect engine operation at all, and is only used to diagnose misfire. Now I may be wrong, but I would think the Nissan engineers know more about it than you or I do. Better yet, drive down and look at over a dozen cars I've worked on that have no CPS, period. IT DOES NOTHING TO THE CAR TO BE UNPLUGGED. I've personally removed it on every car I touch, whether it's an auto/manual swap, new engine, or just routine cleanup. All you will get is a CEL.
Now your car is running like crap, guess what? The CEL is an indicator for a failed sensor that effects emissions only. You could have a cracked distributor cap, burned plug wire, fouled plug, clogged fuel filter, dirty air filter, etc. and never trip the CEL as long as it doesn't adversely effect the emissions control system. That is, the ability for the engine to cleanly dispose of the unwanted exhaust/fuel byproducts. Performance may suffer but if the EVAP system is doing it's job the CEL will never come on, no matter how bad the car runs. I'm willing to bet good money a new CPS won't do anything for except make the CEL go out, it will still run just as shitty as it does now.
Since you've proven you have an FSM, go read it.

[youngmanvr4]

Thanks for clearing that up.

I personally think that aruging is stupid so I'm not gonna. And you know more than I do about the ka so more than likely your right. Just sucks that I cant figure out why my car runs sucky. I've check just about everything that would make it run bad. Though since the CPS does not effect engine performance, I think whatever might be wrong with my car might be fuel related. But everything I've check is ok.

But the car is in pieces now and a SR is going in so I'm not going to have you worry about it now. But thanks for clearing it up. Peace bro.