did i buy the wrong motor? (sohc vs. ohv)

[turboranger91]

my weekend consisted of attempting to swap the motor on my explorer. big thanks to travis (hoop) for coming out yesterday and lending a hand. my father in law came out today and helped me.

yesterday, we got the motor all but pulled out. the exhaust manifold bolts got really messed up to the point that they would absolutely not come out. i had to wait for amy to get back from her dads house with the sawzall. i ended up cutting the HELL out of my exhaust to be able to pull the motor out.

today consisted of disconecting the torque converter and actually pulling the motor out. the hacked up exhaust ended up punching a nice hole in my a/c box... that'll be fun to fix. lol.

now the motor is sitting on the ground next to the truck.... and i have another problem. it looks like the motor that i have is from a newer explorer. it's still an OHV, but this one has a taller intake and several wiring differences. we called it a night, but there's still a lot of work to do. i've got to figure out exactly what the differences in the wiring are, how to make it work with the harness i have, OR how to make the truck harness work with the new engines harness. then install everything. after that, i get to take my loud ass truck to an exhaust shop to have a COMPLETE exhaust made for the truck. it's going to be at least another week till it's done.... maybe longer.

so my question is, does the sohc motor look much different than the ohv? the one that i bought looks identical to the one i have, but the intake looks taller and the wiring is a bit different. is it just a different year ohv?

on a good note, i sold my turbocoupe this morning. i was sad and glad to see it go.

 

[cybergasm]

this new motor have the plastic intake or the metal one.

sound like you might bought a 2nd gen motor and are trying to install it in your 1st gen.
which in that case you are better off to switch the intake,exhaust etc. from your old motor to the new motor. Since the 1st gens are OBDI and 2nd gens OBDII.

that what is cuasing the confusion for you.

 

[turboranger91]

this new motor have the plastic intake or the metal one.

sound like you might bought a 2nd gen motor and are trying to install it in your 1st gen.
which in that case you are better off to switch the intake,exhaust etc. from your old motor to the new motor. Since the 1st gens are OBDI and 2nd gens OBDII.

that what is cuasing the confusion for you.

it's got the metal intake. looks identical to the one from my motor... but the runners appear to be longer.

 

[Rolla91]

Swap intake, and wiring and you should be good to go.

 

[cybergasm]

maybe some pics would in order here?

 

[turboranger91]

maybe some pics would in order here?

it's dark now and the only camera i've got is my phone.

would i need to swap the exhaust manifolds too? looks like them and the intake would need to be swapped due to egr crap. also, on my motor, there's a spot on the back side just above the flywheel where there is a metal plate covering a hole. on the new motor, there is an electrical connector coming up from that hole. on the trucks wiring harness there is a plug that goes into the evaporator (the canister of the a/c system... i think that's the evaporator). the new motor doesn't have that plug on the harness that's on it. (the new motor has a full engine harness already installed on it.)

 

[Rolla91]

If you are positive it is a 4.0 then you should be able to strip the new motor to heads and block and put the old parts on the new motor including wiring/complete intake/exhaust/ and you might even have to swap out the oil pan also but I'm not positive on that one.

 

[410Fortune]

okay

it sounds like you have a 94 OHV engine there
91-94 are metal upper intakes
95+ are plastic
97-2001 SOHC was available, the SOHC 4.0L all have plastic upper intakes and the heads are HUGE the motor is much taller and wider then an OHVV 4.0L, so it would be difficult to mistake a SOHC for a OHV

You said both engines have a metal (aluminum) upper intake?
It is IMPOSSIBLE that one upper intake is taller then the other, the 91-94 OHV 4.0L aluminum intake is the SAME

Your 93 XLT you pulled your engine out of does not have a cam position sensor, the newer OHV 4.0L you are replacing it with, Does.
This is the electrical thing on the back of the block you describe
Leave it in place in the 94 engine and just ignore it, no wires go to it

Your 93 engine also does not have EGR, the 94 does
If you use the exhaust manifold from the 94 you will want to plug the hole where the EGR tube used to mount

You need to use the wiring and sensors from your 93 engine
the exhaust manifolds, upper intake, accessories, wiring, engine mount plates, vacuum lines, fuel rail, etc everything should come from your old engine

Park the two engines next to each other

I like to strip the new engine down to bare bones, then stab it to the transmission and set it in the truck
Now you can start installing all the parts from your 93 that you pulled

The exhaust manifolds from the new engine may or may not work, they will work IF you indeed have a 94 OHV, which is my guess because you say it is a later year and has a metal upper intake

Cutting the exhaust manifold to Y pipe bolts has become routine for me when pulling engines, some of these bolts you will never get loose
A sawzall oor grinder work okay, a torch makes short work of it in hard to reach places, just watch out for fuel lines!! LOL

Take some pictures, I can help you a great deal, I have replaced SEVERAL 4.0L OHV engines with later models

You can use any OHV LONG BLOCK from 95-2001 into your gen I explorer, it just takes a bit of work and your old parts

Here I put a 97 Ranger into a 95 truck:
http://www.explorerforum.com/forums/showthread.php?t=151705

Here I put a 98 Ranger into a 97 truck:
http://www.explorerforum.com/forums/showthread.php?t=194149

Right now I am putting a 99 5.0L into a 98 5.0L truck, same principals apply (using the later model LONG BLOCK = block and heads, retain all OEM parts/wiring/etc):
http://www.explorerforum.com/forums/showthread.php?t=238636

 

[turboranger91]

that pretty much sums up exactly what i thought. tbanks for all the help!

 

[glued2it]

I don't know if anyone here has tried them........

I was pulling the manifolds of a 96 and was using 12pt. sockets As that's all I have for the 1/2" drive.
I boogered up a couple boltd heads untill I reduced the 1/2" to 3/8" drive to use a 5pt socket.

Leason learned.

However I used The irwin bolt extrator kit and it work well on getting the bolts out.