Motor swap

[kook911]

I tried searching but I am not finding an answer. I found a 4.0 motor with the five speed 4x4 transmission with transfer case. All of this came out of a 2000 Jeep Wrangler. What I am wondering is, will this swap into my Comanche? Just want to make sure before I buy it.

[75sv1]

I did a search on Car-PartsInc.com. The cross reference to the WJ Grand Cherokee. Short answer : 'No.'. Long answer possibly, I am swapping one in mine. Also, the NV3550 trans that should be what you are looking at. The motor mount bosses are different on each side. I added a spacer on one side. The other I had the motor mount bracket cut and rewelded. I might look into a Brown Dog motor mount latter. The other aspect is the Accesory drive setup. The holes are not drilled and tapped for the XJ/MJ setup. I was going to drill and tap them. I am changing plans and going to try and use the WJ setup. That does leave it without a clutch fan. I am thinking of putting in the Ford Taurus fan swap.

      I can only think of one other that has done this swap. He cut down the drivers side motor mount boss, and drilled and tapped the holes. So, a lot of work.

[yxmj]

I do not know what the guy above is talking about.....but.... :dunno:

Make sure you get the harness and the ecm....it is definitely something that can be (and has been) done.

 

Your main problem will be getting the harness (the electronics) to play nice without having to change too much.

 

(I think the guy above thinks a wrangler is a WJ)

[kook911]

I do not know what the guy above is talking about.....but.... :dunno:

Make sure you get the harness and the ecm....it is definitely something that can be (and has been) done.

 

Your main problem will be getting the harness (the electronics) to play nice without having to change too much.

 

(I think the guy above thinks a wrangler is a WJ)

Emc and harness are gone. So I'm guessing this is looking like a no. Don't know if this is a good price or not but I can get the whole thing for 600.

[yxmj]

Up to you but you could hunt down another ecm and piece together a harness  :dunno:

 

If I am not mistaken that will be a coil pack set up so you would need the ecm for that ( or change it to a dizzy)....

I guess it depends on what "free and easy" parts you have at your disposal  :thumbsup:  . :MJ 1: .

[Rockfrog]

I do not know what the guy above is talking about.....but.... :dunno:

Make sure you get the harness and the ecm....it is definitely something that can be (and has been) done.

 

Your main problem will be getting the harness (the electronics) to play nice without having to change too much.

 

(I think the guy above thinks a wrangler is a WJ)

No, the guy above you was pointing our that in 2000 the wranglers changed from using the 1998 and earlier block castings (same as XJ/MJ/YJ/ZJ) to using the later model block casting (mid 99+ WJ/TJ) which had the oil filter boss relocated and the motor mount bosses relocated .... Making them largely incompatible with the earlier mounting patterns you were thinking of.

Getting a late model 4.0 is not as simple as you would think. Only the XJ continued to use the earlier blocks until 2001 which were carried 1998 casting dates (like my 2000 XJ).

The trans and tcase will work, but that particular block will require a fair bit of "wrangling" to make work. Up to as to whether you want to deal with it, but it won't just drop in.

As for electrics, skip that, use your current engine control and treat any new block as just that, a block swap. All XJ/ZJ/MJ/YJ pattern 4.0s still used distributor compatible sensor, so even a 2000 XJ motor with DIS can be retro fitted with HO and Renix distributors. See Cruiser's tips for the run down there. The odd easily overcome hurdle, but nothing like trying to fit a late model TJ or WJ motor in.

 

Sent from my SGH-I337M using Tapatalk

[75sv1]

_{As Rock Frog said. Also, the water pump has a different bolt pattern. I was a hurdle to cross, as I think it spins the other way. The oil filter boss is in the same location. The oil pressure sending unit boss is relocated to the back of the passenger's side of the block. Also, watch out swapping earlier heads on these blocks, as they are not drilled and tapped for the idler pulley that goes there for the WJs belt layout. Might need to check the Wranglers and see if it has that or not.}

   _{The NV3550 swaps basically direct. You need its clutch slave or hydraulics setup. Advance Adapters used to sell a kit, that used a Modified Toyota Land Cruiser clutch cylinder. I didn't see it listed of late. The transfer case is a bit different, but usable. I think it has a balncing ring or something. I sold a guy a TC from a '93 or such. His mechanic wouldn't use it, so I took it back or paid the cash as I bought some Caynon rims and 31" tires.}

[FrankTheDog]

The value of a 1999 and up WJ/TJ 4.0 is almost double of a older style engine.

You might be better off selling it to somebody that needs one and buying an older 92-98 XJ 4.0.

Same with the transmission.