95 ka into 91. questions?

[PARAD0X]

Just to let eveyone know, i've searched and i'm still confused.

I have a 91, and the engine recently went kapoot, so I'm currently in the process of having a 95 swapped in. My mechanic says that I need my 91 distributor because the 95 won't work, but my 91 is nonfunctional. What I don't get is if we're using the entire 95 engine, then why wouldn't we use the 95 distributor? I'm trying to figure this out so I don't have to spend more money than I have to.

Thanks for reading and any help and comments are welcome.

[MyFirst240SX]

they are both KA24DE's im not a expert on the DOHC but since they had no performance upgrades their shouldn't be any change at all throughout the 91-98 engine bay.......
thats just what i <i>think</i> however

[PARAD0X]

I've been looking, and all I've been able to come up with differences in the ka24de (91-98) besides the cams and ecu program is that 96+ is obd2. I still don't understand how that affects my distributor?

[Jeff240sx]

He's trying to wire up the stock wiring harness (possibly to save you money) to a '95 (which is early OBD-II) engine. I don't think that the distributors are the same, and the plugs definatly aren't the same. You'll either need to rewire your car, or get a new '91 dist.
Sorry.. this is just info I have picked up over time.
-Jeff

[kalieaire]

you can swap all the electronics from the old engine and all the peripherals over to the new engine.

SOOOOOOOOOOOO, take out your old distributor, and put it into the new engine. (However, if your old distributor and rotor is what's broken, WHY do you HAVE to replace the entire long block??)

Physically, the engine block is exactly the same.

You can even swap heads if you'd like.

So basically, take everything off the original block, and put it onto the new block, and bam, works again.

Basically, it's like swapping out a burned out motherboard for the same model w/ the same components in the computer.

If you want to use KA24DE distributor for a 95+, then you'll need a 95+ ecu as well as engine harness.(Unless you want to rewire some things yourself)

----
BTW-If it's only a physical problem that killed your 91 KA24DE, then swapping blocks and reusing all your old equipment will make the 95 KA24DE work just dandy.

However, if it's not your actual long block that's messed up, perhaps you should fix/replace the broken periphery equipment instead.

[PARAD0X]

its not the distributor thats dead. it some timing chain issue. but i'd rather not use the 91 engine. it was ragged out really badly, and it ran ****ty. but i bought the car with the intention of swapping the engine, however when we were prepping for swap we messed up the distributor. we got the exhaust manifold off and my friend was holding it and he accidently dropped it, and it landed on the distributor...now its dead. but i want the 95 engine cuz it has almost half as many miles as my 91. i'd rather have a good condtion engine than a bad one

[Ozone240]

You will need a 91-94 distributor. The 96 (maybe 95 also) have an internal coil. Like they were saying, just swap the manifolds onto the s14 block and use all your old, s13, electronics. That is the easiest way, but not the only way.


kevin

[drift freaq]

Ok 91 is OBDI , 95 is OBDII , You do not, repeat, do not want to stick OBDII electronics in your car . It was not even designed around them.
Like everyone is telling you use your 91 electronics and smog equipment on the 95 Head and block. You can use the 95 intake manifold but you might need to plug a few vacuum ports. You may want to use the lower portion of the 95 intake manifold because I believe iirc that is does not have the lower butterfly valves. You can check that when your taking things apart to swap over from your 91 to the 95. This jobs been done before my buddy trung a member of socal240sx stuck a 98 KA in his 91. you might want to ask him some questions on aim djsky717

[kalieaire]

Originally posted by PARAD0X
its not the distributor thats dead. it some timing chain issue. but i'd rather not use the 91 engine. it was ragged out really badly, and it ran ****ty. but i bought the car with the intention of swapping the engine, however when we were prepping for swap we messed up the distributor. we got the exhaust manifold off and my friend was holding it and he accidently dropped it, and it landed on the distributor...now its dead. but i want the 95 engine cuz it has almost half as many miles as my 91. i'd rather have a good condtion engine than a bad one

sounds like you're outta luck, unless you get a 91-93 (94s are actually left over 93's) distributor, you'll have to convert completely over to 95+ engine harness setup.

Your original engine could've run badly for any number of reasons, most common are leaking injectors, mafs sensor, vaccuum leak, iacv valve, egr problems, pcv valve, faulty grounding of fuel system harness.

If I were you I'd have attempted fixing those problems first.

If anything, the 91-93 engines put out just as much power as all the other ones(95-98). new and/or old.

--You should be able to find a 91-93 240sx at a local pick 'n' pull, go grab a distributor assembly + cas off one and use that.

HOWEVER, if you do use all the original parts (like we recommend), your engine will STILL run badly.

because, unless it was compression, timing, or cams being a problem of making your car run like trash, it will STILL run like trash because the fuel system remains unchanged, the iacv system remains unchanged, and the engine harness remains unchanged.

Sounds like even after you swap the motor, you'll still be having the same problems, except your pocket will be significantly lighter(from the loss in cash).

sorry dood. Best luck though.

[kalieaire]

Originally posted by drift freaq
Ok 91 is OBDI , 95 is OBDII , You do not, repeat, do not want to stick OBDII electronics in your car . It was not even designed around them.
Like everyone is telling you use your 91 electronics and smog equipment on the 95 Head and block. You can use the 95 intake manifold but you might need to plug a few vacuum ports. You may want to use the lower portion of the 95 intake manifold because I believe iirc that is does not have the lower butterfly valves. You can check that when your taking things apart to swap over from your 91 to the 95. This jobs been done before my buddy trung a member of socal240sx stuck a 98 KA in his 91. you might want to ask him some questions on aim djsky717

yea, the 95+'s have OBDII, meaning they have an extra o2 sensor after the catalytic converter. This is pesky, also, the crank angle sensor is in the tranny i think, instead of inside the distributor. and a few other small differences that can make your swap a hassle.

Starting from the 2nd half of the releases of 240sxs, there were no more secondary butterflies. Of course, you can use your original intake manifold and take off the secondary butterfly yourself.

Performance gains will be minimal, but throttle response will be improved slightly, idle might be a little bit less stable than normal(very slight)

[saukrates03]

i blew the motor in my 93 so my mechanic found me a 95 engine with 75000 miles on it and put it in my car. the spark plug wires are different and so is the cap and rotor cuz i just changed mines. but the 95 engine makes a difference in my car than the reg. 93 engine.

[Natty]

Originally posted by saukrates03
i blew the motor in my 93 so my mechanic found me a 95 engine with 75000 miles on it and put it in my car. the spark plug wires are different and so is the cap and rotor cuz i just changed mines. but the 95 engine makes a difference in my car than the reg. 93 engine.

What exaclty happened to the motor? Bearings, threw a rod, bad rings, seals, etc?
Jeff