91 ka24de to 95 ka24de swap(having sum problems, NEED HELP!!)

[kpc_0721]

I just swapped a 95 ka24de into my 91 240sx. I am still using the s13 wiring harness, I swapped my 91 intake manifold on to the 95 motor because the wiring on the bottom part on the manifold is different in a few spots. I had to use my 91 distributor because the plug is different on the s13 harness due to the built in coil on the 95 distributor. Will the 91 distributor work with the 95 motor and also do I need a 95 ecu for the motor? I had the car running perfect after I set the timing as best I could(couldnt get it exact because my tach isnt working). I had it running fine and went out the next morning and it took about 5 minutes to finally start and I had to keep dumping the gas to get it to start. Im thinking its a problem with the fuel delivery so im gonna try sum injector cleaner and see if that helps any but does anyone know if the distributor or ecu could be causing me problems with the performance of the motor?

[TheOne]

use the 91 distributor/ecu/wiring harness & intake/exhaust manifolds, use the 95 shortblock(block & head)

[kpc_0721]

thats what I am doing. So I dont need to use the 95 distributor or an 95 ecu?

[paulie240sxr]

your timing can still be off mine ran fine it seemed until i tried to drive it and it was off but any way have you set your time a tdc if so take the distributor cap off and make sure your rotor bug is at the correct position under the rotor cap .also like he said above make sure your getting fuel and make sure your fuel filter is hooked to the right line as your standing on the passenger side and run seafoam its great stuff i do it on my vehicles about every 10-20 thousand miles .good luck

[kpc_0721]

I set the timing but its not dead on because my tach dosent work for sum reason and neither does my temp gauge. Im hooking up an aftermarket tach and a mechanical temp gauge and doing the timing again. I thought timing for the ka24de was supposed to be set at 20btdc? I actually bought seafoam this morning and im gonna run that to see if it helps any. The motor runs and starts but it takes a wyle to start so I dont think any of the fuel lines are mixed up if it runs? Maybe an injector is clogged or sumthing due to the motor sitting for a wyle. So nobody has answered my qeustion though, do I need an 95 ecu for the 95 motor or will the 91 ecu be fine?

[paulie240sxr]

see i reset mine a tdc and she runs great i adjusted my timing with the distributor at the track and went from 16.3 to a 15.4 thats a big difference. IMO heres the link to setting your timing with piks on these forums zerothread/161707 i went by this and she runs great as for your tach,temp not working on your stock cluster have you checked your alt fuse on the passenger side of the car under the hood i had simmular problems and it was a blown 75 amp fuse if its bad you coulda have some stuff working and some stuff not hope this helps you out

[Gronde240]

i have a 95 in my 91 and have the 91 airbox/mafs/intake pipe on it and im buying an Apexi power intake (which is just the filter that bolts up to the mafs) but they dont make one that bolts to the 91 mafs so i have a 95 mafs on the way, does anyone know if the plug from the 91 will work on the 95, basically im asking will it work out (switching mafs)

[plane16j]

hey man wats up im in the middle of doing the same swap...you will need to use the 91' mani and ecu and the 91' dizzy but i'm stuck because im not sure if i swap the dizzy cap or the whole thing including the rotor..

[s13rb25det]

I am doing the same thing using a 95 ka in my 91 and I can not get it started at all!!! I am using everything from the 91 exept the block and head. I am using the s13 cams though, it is driving me crazy!! I have set timing dead on at tdc and at 20btdc and still it will not start it just cranks. I did find that my pressure regulator control solenoid valve was broken could this cause a no start? what does it even do? is it like the map sensor? or is it a fuel type sensor? also my dist,needs to be at tdc with it facing #1cyl, is this correct? or is it suppose to be 20btdc? any info about this would be great!!

[kpc_0721]

Hey are you sure you are getting fuel and spark? Check those and check all your fuel lines and just pretty much just go back and make sure you have everything hooked up and plugged in then give it a try. Mine wouldnt start at first because I had 2 of the fuel lines backwards for sum retarded reason of how they have the fuel rail. I'm running the 95 block and head with s13 cams too and everything else is from my s13 and mine starts but im still having sum problems. I believe timing is supposed to be set at 20btdc so set it at that and try it again.

[kpc_0721]

I swapped the whole 91 distributor into the 95 motor because the 95 distributor uses a 8 prong plug instead of a 4 prong like the s13 distributor because the 95 has a built in coil. So yea you have to swap the whole distributor.

[dkdeleon68]

you also need the 91 throttle body

[kpc_0721]

Well yea you do, all I did was unbolt my s13 intake and everything that is connected to it, like the throttle body, and bolted it up to the s14 head.

[paulie240sxr]

I am doing the same thing using a 95 ka in my 91 and I can not get it started at all!!! I am using everything from the 91 exept the block and head. I am using the s13 cams though, it is driving me crazy!! I have set timing dead on at tdc and at 20btdc and still it will not start it just cranks. I did find that my pressure regulator control solenoid valve was broken could this cause a no start? what does it even do? is it like the map sensor? or is it a fuel type sensor? also my dist,needs to be at tdc with it facing #1cyl, is this correct? or is it suppose to be 20btdc? any info about this would be great!!

im running mine at tdc had to do some more adjusting to get a lil more power (i think i was still off 1 tooth lol) but i havent had any problems and check out the link i have above it should cover it well never mind here it is zerothread/161707 check it out it should answer your ??

[s13rb25det]

yeah, I did those instructions perfectly and it still wont start. I set the dist, at both tdc,and 20btdc. I am getting compession,spark,and my injectors are working like they should. I have been able to get it to start for just a few secinds when the fuel pump fuse is removed. so I think it must be fuel related. also my PAIR valve is broken would this cause a fuel concern?

[kpc_0721]

Hmm that sounds strange that your car starts when your f.p fuse is removed, maybe its a problem with the fuel pump itself? Try pouring a little gas into your throttle body and see if it will start up then cuz then you will know if you are having a problem with your fuel delivery. If it does start after you pour a little fuel in there then go through your whole fuel system and make sure everything works correctly and is hooked up right.

[s13rb25det]

yeah, I will pour some fuel in the manifold tommorow and see if that works. I am getting fuel though because my plugs are soaked when I crank it for a bit. I am going to clean and air the engine out so that it wont be washed out with fuel. I also checked codes last knight and got a code 11 and 12 which is a cam angle sensor code and a maf code. I think I am receiving power to both of these sensors I put a test light on them and at least one of the prongs lit up on each one. I can not find any wiring diagrams so I dont know how many or what wires should be getting power. thanks for all the help guys I hope to have this problem found soon.

[kpc_0721]

So did you try the fuel into the manifold yet? Any luck with gettin it going at all?

[s13rb25det]

yeah I tried it and it didnt do anything. I am going to redo my cam timing today and air out my cylinders of fuel and clean the heck out of my plugs I will also check my coolant sensor and all that stuff. I did a compession check and they were between 120 and 150 psi so I will try to bring that up a little bit by adjusting my cams all let you guys know how it goes.

[s13rb25det]

hey guys, I finally got it running!! I rest my cam timing and cleaned my plugs like crazy and it now starts. it just wont hold an idle I repaired a few vaccum leaks and that helped a little but I still have to give it gas to keep it running. I just now checked my compession with the engine warmed up and they are all at 170psi. I am getting a lot of timing chain noise also. what could keep it from not idleling? I will try to set my ignition timing but its kind of hard when it doesnt idle!!