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GC 5.9


xjrev10
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Only 15,000 of the 5.9's were made and only in 1998...makes them more "rare" than our precious MJ's :D

 

I'm shopping at some 5.9's now, and prices are $3K-$7K around here... Going to call on 2 tomorrow to hopefully go look at.

 

I don't think i'd pay more than $1500-$2K depending on much much the head work would be in parts and labor, IF the rest of the body and interior were still in pretty tip top shape. Again these are Cali prices, so possibly inflated depending on your neck of the woods.

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200K+ miles and blown head gaskets. Eh, if the interior and body were in really nice condition - maybe $1,500 max. I just bought one with 160K, straight body, decent paint (has small chips and scratches everywhere, but no dents), and an interior that I'd put at a 8/10. Paid $1,500 for it, but it had no reverse. Ended up needing to replace the whole trans for about $625 for parts/fluids.

 

Good thing about the engine is that it's not specific to that truck. The 5.9L Magnum V8 was used in Dodge vans, Dakotas, Durangos, and Rams from 1993-2002, I believe. Parts are fairly cheap and I've seen plenty go to 250K miles and beyond.

 

I would take a good look at the interior to make sure it's in good condition. The '98 ZJ 5.9L used a special edition leather interior that is unique to that vehicle and that vehicle only. It's REAL cowhide leather and it tends to hold up pretty well over the years. However, the oil from our hands will break it down and the leather steering wheel cover usually gets trashed in no time. Same for the shifter and the center console lid.

 

It's a really nice vehicle and has every option imaginable. Also, a healthy 5.9L makes for a great towing rig.

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  • 1 month later...
i would trade my mj in a second for a none rusted 5.9... but up here in canada either there rusted out or they want 7grand + for them.

 

How about an MJ with a 5.9L under the hood? That's my next project.

 

You got too much time or money, or both Tim! :cheers:

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You got too much time or money, or both Tim! :cheers:

 

I live comfortably :D

 

Although the biggest expense on the 5.9L Magnum-powered MJ project will not be in the form of money, but time. The amount of time I've already spent researching and mapping out what wires need to go where to mate a '99XJ interior harness to a '98ZJ engine harness is pretty ridiculous. Luckily I'm able to do a lot of it at work when I'm talking to clients on the phone or in conference calls where I'm not expected to participate - just be there because I was at one time involved in what the others are talking about.

 

But my favorite is running CFD simulations that take hours and hours, but I gotta watch them and steer them in the right direction - toward convergence! Divergence is a bad thing in the CFD world :D

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The amount of time I've already spent researching and mapping out what wires need to go where to mate a '99XJ interior harness to a '98ZJ engine harness is pretty ridiculous.

 

I'm the same way with my CRD MJ project, mating a CRD engine harness to XJ harness.

 

 

What exactly is it that you do?

 

Rob L. :dunno:

 

Sounds like he does something with computational fluid dynamics.

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You got too much time or money, or both Tim! :cheers:

 

I live comfortably :D

 

D

 

I don't do bad either...Just that damn mortgage killing me and getting in the way of Jeep projects!

 

I got a big pile of bolt on parts that I have waiting to installed on my 5.9...Just waiting on the new Vanco 16" Brake Kit!

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I'm the same way with my CRD MJ project, mating a CRD engine harness to XJ harness.

 

That sounds like an awesome project! I take it the CRD engine (trans?), wiring, and PCM is out of a Liberty? Now, did you have to get a diesel XJ wiring harness for this? In my research, I saw that many of the connectors that mate the underhood engine harness to the interior dash harness had a lot of different configurations depending on which XJ you had - diesel or gas.

 

What exactly is it that you do?

 

Rob L. :dunno:

 

Yes, Sir Sam is correct. I do something with Computational Fluid Dynamics. What that something is, I usually don't know. It's just one small aspect of my job. I work for a small company with big clients that expect we can do everything engineering-related and our boss rarely ever says, "No, we don't have the capability of doing that." So, I'm a jack of all trades, master of none. I work for an engineering consulting firm that deals with multiple heart and fluid bed furnaces. The CFD modeling that I'm currently doing is to test out some experimental designs on an afterburner to see which is the best method for mixing the unburned volitales in the exhaust gas entering the afterburner to reduce NOx. Each simulation takes a few hours to reach convergence and I have about six different designs...so the hours add up.

 

I don't do bad either...Just that damn mortgage killing me and getting in the way of Jeep projects!

 

I got a big pile of bolt on parts that I have waiting to installed on my 5.9...Just waiting on the new Vanco 16" Brake Kit!

 

Mortgage is something I don't have to deal with yet since I rent, but my day will come...

 

You think your pile of bolt-on parts is big, check this out:

 

I was going to tear into the ZJ this coming weekend and try to get a lot of it done, I keep needing to move the ZJ in and out of the shop so it needs to stay running for the time being. Maybe next week...if I don't get too caught up in the new MJ project I created for myself.

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I'm the same way with my CRD MJ project, mating a CRD engine harness to XJ harness.

 

That sounds like an awesome project! I take it the CRD engine (trans?), wiring, and PCM is out of a Liberty? Now, did you have to get a diesel XJ wiring harness for this? In my research, I saw that many of the connectors that mate the underhood engine harness to the interior dash harness had a lot of different configurations depending on which XJ you had - diesel or gas.

 

No, I am just using the CRD engine harness/computer and tying those into the XJ engine bay harness, the XJ engine harness gets removed from the XJ engine bay harness. All functions for the CRD engine go through 3 plugs which makes the CRD efi fairly standalone. The XJ power distribution box stays and things get spliced into the old XJ engine harness points with some new plugs. Should be pretty clean when I get around to it.

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They should pay you to take it away. The 5.9L is a strong engine, but the fuel economy is horrible -- single digits around town is not unusual.

 

Aw Heck Eagle, I don't know that I ever broke 15mpg on my 4.0 MJ... I get that all day every day with my 5.9L...95% "around town".

 

You can talk all the bad you want about the 5.9, but doesn't mean it's so. :cheers:

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Sounds like he does something with computational fluid dynamics.

 

Not that anyone actually cares, but this is the something I've been doing with CFD for the last couple of days. It's not one of the most interesting simulations I've done, but is kind of neat since it models a methane gas burner that reheats a stream of exhaust gas from a multiple hearth furnace to reduce overall knock before it leaves the stack. By using a tangential inlet for the gas, it forces the exhaust gases to "swirl" in the upper chamber increases the residence time before it exits down the center choke ring. The longer residence time allows for a more complete combustion of the unburned volitales in the exhaust gas stream and tends to reduce NOx.

 

First image is just a standard temperature profile. Black lines are the surface of the afterburner model. The pretty colors are a slice down the middle of the afterburner to show temperature profile.

 

This is a shot above the afterburner looking down at the upper chamber. I used velocity vectors colored by pressure. Kind of looks like a toilet bowl, but gives you a fairly good idea of the amount of "swirl" we're obtaining in the upper chamber before it exits the choke ring.

 

Pictures are always nice to look at and generally what we give to our clients, but the hard numbers are what's more important to the Engineer.

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Mortgage is something I don't have to deal with yet since I rent, but my day will come...

 

You think your pile of bolt-on parts is big, check this out:

and I thought my parts pile was big for my 2 moneypits! :eek: and a crd MJ sounds pretty sweet jamminz.gif sorry for the :hijack:
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I do the modeling, meshing, and simulations. I will also generate reports with the pretty pictures and key areas of each model that we want to focus on. Most of the time clients are interested in outlet temperatures of equipment or the overall composition of the gas at the exit for emission reasons. Combustion and fluid flow has never and will never be my specialty. There are certain things in engineering that I just "get" but fluid flow has never been one of them. If you asked me to design an exhaust system with optimal flow characteristics, I wouldn't really know what to do. There's another guy in my office who is pretty good with all of the combustion and fluid flow stuff that generally comes up with an idea and asks me to model it.

 

Before Fluent was bought out by Ansys, ProE and Gambit were pretty heavily used to create and mesh the models, but not so much anymore. I took an intro class for Fluent and there were still a few old school guys in the class that preferred to use gambit over the Ansys modeling program. I took one look at that and am thankful I'll likely never have to deal with it. The Ansys modeling program is pretty primative, but it's enough to get by. It's actually pretty similar to SolidWorks in a lot of ways and that was the CAD program I went through engineering school using (but don't use it anymore in the workplace) so I don't mind it.

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