Here she is the day I brought her home in August of 2013 for $1000.
A Patriot Blue Pearlcoat 2wd WJ with tan cloth interior a blown 4.0. The PO was some lady who kept driving it after it started knocking. Eventually it threw the number one rod through the block. This is a common problem in 99-04 4.0s. What happens is the piston skirt breaks and throws off the balance of the piston so it wobbles inside the bore. Not only that, but you also have the skirt cycling through your oil.
Everyone loves to see the damage
Hole in the oil pan
Hole in the block behind the A/C compressor
Oil Pickup tube
Number one piston and half of the rod
I needed a new engine so I found a 2001 Jeep Grand Cherokee Laredo with almost everything you could get at that trim level. The problem was it had been in an accident a few years ago and it came from New Jersey so where it had been hit behind the rear passenger door was all rusted out. I picked it up for $800.
The first thing I did was an interior swap. I replaced the tan cloth with black leather. The whole interior of the 01 was in a much better condition. I swapped the EVIC with the homelink garage buttons, automatic headlights, the infinity sound system, leather steering wheel with audio controls and the 4x4 shifter.
The 2001 is the furthest away
2000 Cloth interior
Tan interior almost all the way out
Black interior swapped in (you see the 01 through the glass because I moved it to the other side to start pulling the engine)
Swapped the front bumper from the 01
4x4 Shifter and cable installed
From here all I did was pull the blown engine and swap front axles using instructions from a Haynes manual.
Engine and transmisson pulled from the 2000
2wd axle out
4x4 axle in and on the ground
Painted brake calipers red for decreased stopping distance
I didn't take many pictures of the 01. Here I pulled the engine transmission and transfer case. The 2001 didn't have reverse, so I thought no big deal, I will just use the transmission from the 2000. Wrong. The part that breaks is in the overdrive, which happens to also be the transmission to transfer case adapter. I didn't figure this out until I had it all together so I still need to pull the transfer case and get the overdrive rebuilt because as of right now I don't have reverse.
After I pulled the engine I started to disassemble it. There wasn't anything wrong with this engine. It only had 117,000 miles on it and it ran great. I removed the 01 pistons and installed pistons from a 93 4.0 I had in the garage. All new rings and everything.
Note: I did all of my research to make sure they would fit. When the pistons got thinner, they shaved metal from the insides, so they have the same bore.
The thickness difference in the skirt is what was changed. 93 on the left 00 on the right.
Tops of the two pistons
93 pistons in 01 block
I assembled the engine, transmission, transfer case, and starter all outside of the car and dropped them in as one. After I had it all put together and fluids in and everything, I went to start it and it didn't start. What turned out to be the crankshaft position sensor was improperly reading the signal for top dead center of cyl #1.
Eventually, when it did start it ran and still runs great. I had disconnected the coil pack and turned it over for a minute or so (not constantly, don't want to burn up the starter) to let oil pressure build up so when I started it, it immediately had oil pressure.
Now, I have a 2000 WJ Laredo with almost every option (no fog lights), and no reverse. I will probably get around fixing it soon because I just turned 16 and I get my license in mid April. Before anybody flips out because I'm so young, I just want to say I tightened everything to torque specs and lubed everything in the engine with engine oil. I've been helping my dad in the garage since I was like ten so that is where all of my experience comes from.
I have done a few mods to it while I was waiting for gaskets and stuff. I removed the roof rack and filled the holes with silicon. I kept the roof rack in case I ever need to use it but I like the roof line without it. I also made a thread that I will post the link to about what I did to the radio. I made an AUX input without having to use a CD changer. This will work as long as you have a cassette tape player in your radio.
I did all of this all by myself, only needing help once because the cherry picker was falling over, so I had to hold it up and call my dad for help
. I couldn't have done this without this website, wjjeeps.com, and my dad. Sorry this turned into a thank you speech.
All in all, we have two grand into a car that blue books for $3500. Feel free to ask any questions.