Jeep Wrangler TJ/LJ Diesel option

CRD conversion


  • Total voters
    28

Nikson

Explorer
Brakes, weight, wheelbase. A diesel swap isn't going to fix those issues related to towing with an TJ-L.

getting something heavy to go, might as well as get a dually pickup truck...

its a matter of having extra torque here obviously, I for one dont plan to tow anything over 3500lbs either way...
 

Bigjerm

SE Expedition Society
I dont see how its any safer to have the CRD Grand Cherokee rated at 7500lbs?

What is the CRD rated to tow? If its 7500 then I am sure, and as another have posted, it comes down to brakes, wheelbase, weight, engine, trans, all that good stuff.

Question with tq. Never seen a graph, but would it be something to help the rock crawl world? TC and gears help but the engine does too. Very curious on the numbers.
 

Nikson

Explorer
What is the CRD rated to tow? If its 7500 then I am sure, and as another have posted, it comes down to brakes, wheelbase, weight, engine, trans, all that good stuff.

Question with tq. Never seen a graph, but would it be something to help the rock crawl world? TC and gears help but the engine does too. Very curious on the numbers.

number on the CRDs?

Wiki-

2.8CRD - The diesel utilized a variable geometry turbocharger and generated 160 horsepower (120 kW) and 295 lb·ft (400 N·m) of torque,

3.0CRD - hat may sound crazy, but this Mercedes-Benz diesel mill can easily put out 198 hp and 371 lb-ft of torque to all four wheels.

(Read more: http://www.dieselpowermag.com/news/0711dp_2007_jeep_grand_cherokee_crd/viewall.html#ixzz1dAKGVHQz )

and these are stock numbers, which can be fine-tuned now days with a flash of the "brain" for the motor...
 

Metcalf

Expedition Leader
Making it work is one thing....making it feel like factory is another.

I can't recall anyone installing the 3.0 diesel in the TJ platform. Even in the larger JK there are some size issues if I remember correctly.

I still want to see someone do the older 2.7 5cyl engine as a swap. It came in the GC overseas and was also a sprinter engine. I think that would be a VERY interesting swap.
 

Nikson

Explorer
Making it work is one thing....making it feel like factory is another.

I can't recall anyone installing the 3.0 diesel in the TJ platform. Even in the larger JK there are some size issues if I remember correctly.

I still want to see someone do the older 2.7 5cyl engine as a swap. It came in the GC overseas and was also a sprinter engine. I think that would be a VERY interesting swap.

I am not sure of the sizing issues with 3.0L personally. I am YET to get a call from the local dealers that I've contacted about availability on one for even a test drive.

I do believe that TJ/LJ has plenty of space under the hood, but not 100% sure about it fitting.

2.7? Yeah, good thing, but I guess most guys choose the easier engine for a swap rather then newer & possibly better overall.

I think either way, even the VW 1.9TDI is a great option, as long as one can make it work...
 

jeepdreamer

Expedition Leader
Stone soup...

I was going to mention the VW motor but I see you are already following Mast's conversion. It seems a good option if one kept the overall jeep more stock, say around a 32+/- tire?
Another option would be some of the lighter Cummins 4cyl motors like in this thread (long read but LOTS of info!)

http://www.dieseltruckresource.com/dev/b3-3t-jeep-yj-t112807.html

Also, I found this info on VM's website... maybe it will help?

http://www.vmmotori.it/en/01/00/index.jsp

(sorry, tried to add the pdf files but no joy. To big?)
 

Jakes01234

Explorer
But would you consider paying $10k to have one installed into your TJ? I am personally at the point where I'm going to purchase a GC, since I like the 3.0L HPs & torque, not to mention its towing capacity of 7500lbs.

At this point, I see that a donor vehicle will cost me about $5-6k, plus another $4-5k in labor. Am considering to make it happen where I'll have my buddy build a plug-n-play harness, and just see how it goes... Lots of people are just not doing it, since they arent sure about the outcome, or dont have the resources (shop/tools/knowledge).

I am surprised that lots of guys go through all the hassle of install of a BT-type engine, not really get the MPGs out of it.

with 3.0, we should expect 30MPGs with over 200hps and +/-400ft/lbs of torque...

HPA has gotten higher 20s MPGs with the 1.9TDI, so 3.0L has lots of potential...

i would do it for 30 mpgs alone.. never mind longevity of the engine... it may taake a while to get my money back in return from fuel but i didnt build the jeep to make a profit to begin with, i built it for my enjoyment... as long as its under 10k like 9998 then it would make me feel better hahaha you only live once and you cant take the money with you
 

reece146

Automotive Artist
I do believe that TJ/LJ has plenty of space under the hood, but not 100% sure about it fitting.


Tend to agree. If AEV can make the ChryCo pushrod V8s fit I can't see the 3.0 being that big a deal even if it is OHC. The ChryCo 4.7 is OHC also and I've seen that installed in a TJ also.

Sell the parts à la carte and you'll engage the casual and hard core builders both.
 

jeepdreamer

Expedition Leader
Guess I know what I will be reading tonight... haha! I wnoder how hard it would be to get the 2.8 or 3.0 to run as a "stand alone" engine. I mean, a manual tranny and an older style Jeep like my CJ. Wiring is minimum there and almost all gagues are mechanical.
 

schnutzy

Observer
Guess I know what I will be reading tonight... haha! I wnoder how hard it would be to get the 2.8 or 3.0 to run as a "stand alone" engine. I mean, a manual tranny and an older style Jeep like my CJ. Wiring is minimum there and almost all gagues are mechanical.

from what i remember after reading through that, it would be extremely difficult.
but ill let you determine that for yourself after you have read through it.
 

jeepdreamer

Expedition Leader
Phew... what a read! lol!

Read through about 90% of the thread.. phew! And I agree that it does sound like it is a difficult swap in a TJ/LJ. What I suppose I don't understand is the why? Seems that most of the issues stem from making the gauges function and interfacing with the comuters. Sorry.. I'm a stone age guy that knows buttkiss about computer stuff. *embarrassed*
I think getting a 2.8 or the 3.0 to simply run in an early YJ or CJ would be fairly easy. To make it work in a tj/lj... why not set it up the same but replace the gauges with less electronic succubus ones? Is that even possible?
On a side note.. I sent VM an email today in hopes of hearing back from them. Since I am currently stationed in Germany it is maybe possible for me to pick up a new motor and bring it home with me, dollars permitting. :) I could also maybe even use a VAT tax form to shave a few buck off the cost? From their site I am curious about the electronic needs of say their 3.0 Automotive versoin vs the industrial one? If I hear anything I promise to post it for all...
 

schnutzy

Observer
the way i understood it, is that to get the motor to run right, they had to get all the gauges to work right and get the computer to talk like it is supposed to. the 2.8 is so computer heavy, that if one sensor or something does not read right, the engine does not function properly.

here is another thing that might interest you: Cherokee 2.8 TD
 

reece146

Automotive Artist
I think getting a 2.8 or the 3.0 to simply run in an early YJ or CJ would be fairly easy. To make it work in a tj/lj... why not set it up the same but replace the gauges with less electronic succubus ones? Is that even possible?

This is the tact I would take as well. I've seen it done with GM Gen III/IV swaps into the TJ.

From a creation of a product point of view if you had injection moulded binnacles to replace the factory gauge cluster with standard aftermarket gauges that would be plenty adequate. The OEM crap in any ChryCo product is no ******** hot thing anyway so to replace those crappy OEM gauges is no loss provided the gauge cluster doesn't look "billy-bobbed" afterwards.

With that as a plan of attack I don't know if I'd bother with the electronics heavy diesels. Maybe an old school, mildly worked over mechanical OM-whatever out of a Mercedes makes more sense at that point. You wouldn't be stuck with a craptastic ChryCo transmission either. Something smooth, quiet and very tractable would be ideal. If I'm not mistaken getting ~200hp and ~300 lb-ft out of a OM617 isn't that hard. If it's good enough for a Mercedes it must be good enough for an overlanding Jeep.

 

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