Hello
My first post here, from holland

Loving jeeps for a couple of years now (owned a couple of CJ’s) and always driving my 82 wagoneer.

Now for the first time I am into Cherokees
Bought a 86 with a V6 limited and a 90 limited with a renix 4 liter
The 86 was powered by a ford V6, a worn out 727 and a 242 t case

So I decided to transplant the 4 liter straight into te 86
I woke up this morning with the idea that this is going to be my worst nightmare.

So I decided to call in some help from the jeeps homeland.

Till now I removed the ford, the tranny an t case in one piece.
I started on removing the inline 6 and was upset about the wiring,the 90 jeep has a powerboost brakes and ABS, it gave me a headache already by trying to understand the systems

I did try to find an article on a 90 into 86 swap with no result
The mechanical parts is no problem I think but are there any electrical problems to run into??, what to do or not to do?
can i make it run without the injection is this much easyer? because it is going to run on LPG anyway

Thanks

 

The easy way to do this is to take both down to nothing, and basically swap the bodys, is the 90 that bad though?

 

the 86 has a bad engine, the jeep don't like the ford
today i disconect al the engine wiring
i am wondering if i kan use the same fuse box? and just plug in the 2 connectors

 

for your info ,in europe we don't pay road tax for a car thats older than 25 years
so thats wy i want to keep the 86 body

 

If they plug up it should be the same, I hope they are, and I was just wondering

 

Unless there's something I'm not aware of, there's no Jeep vehicle that came with any Ford engine! If Jeep didn't use "their own" engine (******, Kaiser, AMC, Chrysler,) it was a GM gasoline engine (two Buick, one Chevrolet) or a Diesel by Renault (US domestic) or VAM (overseas.)

The 1986 V6 was OBD-I compliant (AMC bought the GM engines with GM controls systems,) while the AMC six was not OBD compliant until the Chrysler electronics were installed for 1991.

However, it should be noted that the front clip (mainly near the firewall) was modified for the 1987 model year to fit the longer AMC block.

The drivetrain in the 1986 should be the Chevrolet V6-171, Chrysler "Baby 904" transmission (A904 with GM Metric V6 pattern,) and the NP231J transfer case.

The 6-242 isn't a direct swap for the V6-171 - you'll have to do some metal work in order to fit the AMC block, since it's about twice as long as the GM.

The 6-242 won't fit up to the Baby 904 - and that's probably not enough transmission anyhow.

The NP231J should swap back and forth, but I'm not sure if the V6 version has the same spline count as your 1990 donor (21 for the automatic, 23 for the manual in that year.)

You can put the 6-242 in place of the V6-171, but it's easier to drop in another GM V6 (3.1L or 3.4L, rear-wheel drive or four-wheel drive. The front-wheel drive has the starter motor on the wrong side, but don't neglect them for potential engine donors. If there's an unused starter motor mounting pad on the back of the engine, as mounted, it will work for RWD. Expanding your donor pool over there can only help - since I'm sure breakers aren't as common overseas as they are here in the States...)

Note that both the 3.1L and 3.4L will come with fuel injection, so you'll have to grab the control electronics from your donor as well (that shouldn't matter FWD-RWD, but I don't know how well the wiring will fit once the engine is installed - may require some adaptation.)

I believe there's a forum dedicated to the GM engine that Jeep used (60-degree V6, Google that,) and I've got a RENIX group on Yahoo! (groups.yahoo.com/group/RENIXPower) that may come in handy. Once I finish scanning the 1992 FSM I'm working on, I've got a 1990 set in the queue next.

 

Um what was wrong with the '90?
OIC

Have fun with your swap.

 

road tax

i dont know if you have such thing in the states?but outhere we have to pay for driving the roads,they say they use it for maintaining the roads
if its older than 25 years its free of road tax

and the 86 looks allot nicer,its red on the inside (we call this "goed fout") and is fairly complete,it has a 3 inch lift too

 

thanks 5-90
somebody messed up the jeep by putting in the ford and the 727 and the 208 t case
they did a horrible job,they even even forgot to transplant te ford computer, and the injection system,it runs on lpg only, thats wy i do the swap
there is nothing left of the old V6,the wiring was cut and the computer was gone
the renix is going to run on lpg also, but we need the injection system to if possible because its not availeble everewere

i am transplanting the whole driveline,engine,AW4 tranny,242J T-cans,and maybe later the axles

 

I'd really like to know how they did that.

As I recall, the A727 has an integral bellhousing (cast as part of the case,) and it only came with two patterns - either the Chrysler LA-block (V8-273/318/360, V6-238, V10-488/515) and the AMC V8 (Jeep used it for a while, so V8-304/360/390/401 and 1975-up AMC I6. There are other V8s in both of those, I just don't recall the whole list offhand.) I don't recall is it ever came with a Ford pattern - and Ford would likely have used their own C4 or C6 behind their engines in a truck application. Is there an adapter plate between the engine and transmission?

The A727 is an excellent transmission (its only real problem is the lack of an overdrive range - the later 47RH fixed that,) and the NP208, as I recall, saw use in 3/4-ton and possibly 1-ton trucks, so that's not a bad thing. I just don't see how they managed to (easily) plant a Ford engine in front of the A727... Got pictures?

 

not easely thats for sure,but this is how they did it
its a 904 by the way and not an 727 (thats in my waggy)they had to make busings to fit the flexplate to the converter because of the spacers,it causes a lot of vibrations

 

Sure as ****, that is in fact a Ford engine with an adaptor plate to mate it to the transmission. Way too much time and money spent for little, if any, gain.

 

Yep - that black bit between the engine and transmission is the adapter.

So, mated a Ford V6 to a Chrysler A904? For the love go Gawd - why? Could have at least used a Windsor V8 (but not that damned 255!) and the A727!

Any idea which Ford V6 that is? I'm not as up on Fords on other people are (when asked "Ford or GM?" my reply was always "AMC.")

 

i am a AMC lover too
its a "cologne" an 2.9i from a scorpio or sierra,maybe its called diverend in the usa?
and yes its a 904
out here we can't just put in another engine,we can't put in a 8 cilinder if the car is made for a 6,thats wy they did put in a V6 again
wy not the 4,3 GM? because they were stupid

 

we have put the engine in yesterday
another problem is the radiator,the front is different
the worst is yet to come i think,the wiring,the firewal plugs arent the same

do anyone have a schematic drawing to fix this,before i start a fire?


regards willem