96' OBD II manual transmission on a 95' OBD I s14??

[second_chanceS14]

ok, so after getting my 14 in january and begin spending on little things here and there....my fucking auto tranny began to go out and smoke like a little bitch. So i waited and waited and then i found a 96' complete 5speed swap and i jumped on it. Now the problem is, that my 95' is apparently OBD I while the swap is for a 96' OBD II. Is this gonna work or not? I thought 95' were OBD II but it turns out they are not so now i got to figuire out if the tranny will plug up with my current connectors. Steve gave me the upper engine harness with the swap but some plugs are different. So i was wondering if anyone knows anything about how to make this swap work. Any help would be greatly appreciated.


yes i have looked it up and googled it and i havent seen shit.
ppl need to learn to name their threads accordingly in order to make info more easy to access. :boink:

[DreamN]

It'll work. Not all 95s are OBD1. Later built models were OBD2.

[second_chanceS14]

mine is an OBD I, so how would this work? if i get the engine and tranny harness along with the ecu of a 95 mt would this work??? would everything plug up??? i really really dont want to splice my shit but if i have no choice then fuck it.

[DreamN]

Everything should install and work as it should. Get a 95 5 spd OBD1 ecu so you don't throw codes though.

[second_chanceS14]

i need more info plssss!!!!!!!!!

[93pignose]

the obd2 have an exact o2 sensor, so the car will think it not working and throw a code in ur case

[S14DB]

It will work fine. You are going to have to hack up the lower harness in a AT2MT swap anyways.

[second_chanceS14]

im just worried my reverse lights are not going to work or that when i go smog my car it will give me BS. but if i have to do the harness like that then illegal smogging it is. btw i heard that if you run the 5speed with an auto ecu then the clutch fucks up faster?? i dont know if it's true or not i just wanna get my facts straight. thanks for the help guys =D

[DreamN]

reverse lights are only power and geound wires. no real way to fuck that up. get the obd1 ecu and wire everything necessary. you shouldn't throw any codes as long as everything is wired properly. you need to search all the threads concerning swaps in an s14

[Flynbrick]

If you're going OBD II route, not sure why you would, you'd also need a Crank Angle Sensor on top of the bell housing. Why would an Auto ECU f-up a clutch faster? Clutch engages, and disengages from hydraulics, even if the car is at a stop, the transmission or Throwout bearing takes the load...

[d-wade]

If you're going OBD II route, not sure why you would, you'd also need a Crank Angle Sensor on top of the bell housing. Why would an Auto ECU f-up a clutch faster? Clutch engages, and disengages from hydraulics, even if the car is at a stop, the transmission or Throwout bearing takes the load...

CAS is mounted on the bellhousing of all KA24de S14 transmissions. So no worries their. Just get a 5 speed ECU from a 1995...Problem solved

[second_chanceS14]

If you're going OBD II route, not sure why you would, you'd also need a Crank Angle Sensor on top of the bell housing. Why would an Auto ECU f-up a clutch faster? Clutch engages, and disengages from hydraulics, even if the car is at a stop, the transmission or Throwout bearing takes the load...

the tranny i got has that little sensor on top of the bellhousing, some friends told me clutches fuck up if you use the auto ecu, i didnt know if it was true or not since this is my first auto to 5speed swap, i've done auto to auto and thats simple shit. I just wanna get the opinion from ppl who know their shit and have done it. I rather look dumb and ask stupid questions then fuck up my car and then be a sorry ass.




but thanks anyways guys, i appreciate the info.. i think i got the just of it...so chop up my auto harness and hook it up with my trannys, and get the 5speed ecu from a 95 and everything should be ok.

thank you friends ! :bow:

[DALAZ_68]

to simplify this ordeal heres whats going on

he has a 95 model, its OBDI type harness, how u ask? his engine harness only has one large plug infron tof the intake manifold ( OBDII has 2 large plugs) and his has a red temp sensor (OBDII has blueish greenish sensor)

i gave him a complete 5spd swap from a 96, included was the lower and upper engine harness and ECU

whats the easiest route for him to take?


hopefully that helps...

[Mangudai]

CAS is mounted on the bellhousing of all KA24de S14 transmissions. So no worries their. Just get a 5 speed ECU from a 1995...Problem solved


Are you sure?


The procedure is the same for OBDI cars except OBDI cars to not require the a Crank Angle Sensor. The parts necessary for the swaps were obtained from 2 separate OBDII ’96 S14s. OBDI transmissions could have been used, but a mount would have to be drilled for the CAS, and we didn’t want to worry about that.


I am tired right now so maybe im just confused.

[DALAZ_68]

Are you sure?




I am tired right now so maybe im just confused.
D-wade is wrong... 95's that ive delt with torn apart ..etc dont have said sensor...yes i know what sensor it is...

[Mangudai]

In that d wade could you edit that, that's how misinformation spreads.

[unlegendary]

there is a guide to repin your ecu, enuff said, the only problem should be ur o2 sensor and if your unlucky your tranny won't have a hole on top of the tranny bellhousing for the crank position sensor.

[d-wade]

D-wade is wrong... 95's that ive delt with torn apart ..etc dont have said sensor...yes i know what sensor it is...


No Sir, You are wrong. Have you ever done a 5-speed swap on an S14?
I just completed my swap 3 weeks ago. Both S14 auto and manual trannys have the exact same sensor on the top of the bellhousing.
Pic of mentioned Crank Angle Sensor (CAS) that was removed from my 1995 240sx automatic trans.

http://i586.photobucket.com/albums/ss303/02silversd/P6250001.jpg

[d-wade]

In that d wade could you edit that, that's how misinformation spreads.

No need for me to edit my post. Just supplied visual proof!

[essforteen]

No need for me to edit my post. Just supplied visual proof!

You are correct
all s14s have the sensor mentioned

You will have to wire your reverse light and your neutral sensor because the ecu will throw a code
You also have to cut the plug on the lower harness with the three
wires and use your two wire plug from your automatic harness which the oil pressure light is connected
its difficult to explain but hope it helped

And yes ive done it before!!!

[DALAZ_68]

No Sir, You are wrong. Have you ever done a 5-speed swap on an S14?
I just completed my swap 3 weeks ago. Both S14 auto and manual trannys have the exact same sensor on the top of the bellhousing.
Pic of mentioned Crank Angle Sensor (CAS) that was removed from my 1995 240sx automatic trans.

http://i586.photobucket.com/albums/ss303/02silversd/P6250001.jpg

3 s14's (2 95's 1 96)
2 S13's

on the 2 s14 i did i didnt see the sensor, it kinda sticks out a good bit, hard not to notice...

BTW:

the 2 s14 were auto's for clarification, i didnt see sensors on either tranny's

as far as the MT transmissions we used one from an s13 and the 2 were OBDII transmisions...

[d-wade]

3 s14's (2 95's 1 96)
2 S13's

on the 2 s14 i did i didnt see the sensor, it kinda sticks out a good bit, hard not to notice...

BTW:

the 2 s14 were auto's for clarification, i didnt see sensors on either tranny's

as far as the MT transmissions we used one from an s13 and the 2 were OBDII transmisions...

You may have just simply overlooked the sensor. Their is no need to remove the CAS from the auto. As long as your 5-speed tranny includes the CAS. If your 5-speed tranny is missing the CAS, simply use the auto CAS.

Also their are no external differneces between any of the 5-speed trannys from an S14, regardless of OBDI or OBDII. The only differences I have found are when purchasing a clutch kit. When I purchased my Exedy kit from Mazwork their were two part numbers to choose from for the same kit.

[DALAZ_68]

You may have just simply overlooked the sensor. Their is no need to remove the CAS from the auto. As long as your 5-speed tranny includes the CAS. If your 5-speed tranny is missing the CAS, simply use the auto CAS.




HIGHLY doubt id miss that bulge...if anything they were swapped AT trannies...or some random bastered child lol...i know one(when AT) already was throwing a code, but i never checked itprior...the other was long ago ...

the transmission i gave OP has the sensor and the complete harness attached, hell the starter was still attached to it...

[projectRDM]

Guys, quit spewing misinformation.

ALL S14 transmissions have the crank position sensor on top of the bellhousing. ALL. '95-'98, auto and manual.

ALL 1995 model S14s are OBD-I, period. 1996+ are OBD-II.

The transmission is identical for all S14 models, swapping any year into another chassis is as simple as unplugging and removing it, nothing is different between '95 to '98. There is nothing to wire or modify if the chassis was a manual. If it's an auto, it's the same wiring procedure as any other 5speed swap. Nothing is different just because the transmission came from a later year car. You do NOT use the 5speed lower harness, there's nothing to plug into on the chassis side for the wiring you're hoping to gain. Hardwire the reverse lights, run the wiring for the neutral and 5th position switches *if* you want the CEL to stay out. You do not need either one to operate the car.

[Mangudai]

I see, since ive never had to deal with the tranny before I can only go on what im told/shown. The thread I cited is a sticky in the archive.

http://zilvia.net/f/archive-faqs/179560-s14-auto-manual-pics.html

[second_chanceS14]

as far as the auto trannys having the CAS, i dont know but will find out real soon.. I'll be sure to post my finds...I'm 100% sure my car has never been messed with since i got it completely stock. i Might do a step by step DIY with specific pics to help future members out with their swap.

[projectRDM]

as far as the auto trannys having the CAS, i dont know but will find out real soon.. I'll be sure to post my finds...I'm 100% sure my car has never been messed with since i got it completely stock. i Might do a step by step DIY with specific pics to help future members out with their swap.

If it's an S14, you have one. Otherwise you'd have a CEL denoting it's missing. And it's a CPS, crank position, not angle. Calling it a CAS confuses people who don't know the difference. You have to remember a good majority of forum browsers are idiots. The more you cross use terms the more there's going to be future threads trying to decipher them.

There's also no need for a writeup as there's plenty of very good ones that already exist, people just don't ever use them. Creating another one, unless it's exactly like ones existing will only confuse people, as anytime an instruction is a hair different from another, these 240 kids lose their minds and fall to pieces. Sad, but true.

The writeup done by Brian Davis (orion) on his page (I forget it at the moment) is more than enough for even the stupidest of people to follow.