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FrankenJeep

Old 02-02-2010, 10:04 PM
  #1  
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I have installed a Mercedes Benz 300TD into a late model Jeep cherokee country. This conversion took several months of preplanning and parts ordering, and 2 weeks of down and dirty work. The following are some specs.

1993 Cherokee Country
AX-15 tranny
231 T-case
1985 OM617 I5 turbo diesel
3.5" lift
Custom front suspension modifications

I have so far put 130miles on the transformation. Power is very similar to the original 4.0L. Engine is much noisier... Too early still to tell about fuel economy...

Expected projects for the next few weeks:
1. SYE installation, kit includes teraflex sye and TW driveshaft. I haven't installed one of these kits before, any suggestions or pointers? Doesn't seem too difficult compared to the original task at hand...
2. Waste veggie oil conversion, 2 tank setup. I have the tank just waiting on the solenoid valve....
3. Cruise control woes. So I have preserved the original cc, it work before the conversion and sort of works now. My problem is that when activated speed remains steady for a moment and then slowly looses about 10mph. However, if I hit the acc. button and bring it back up to speed it will stay. The Diesel has a mechanical vacuum pump and I am wondering if the small factory vacuum canister doesn't hold enough volume to activate cc servoe? Any advice or additional info about 1993 Cherokee CC would be greatly appreciated.
4. Adapt crk position sensor to the diesel to preserve the factory jeep tach. Question about the indexing on the 4.0L flywheel; I noticed 3 groups of 4 notches on the flyheel. Does this mean the hall effect sensor would signal 3 pulses per revolution or 12? Any addition advice on this would also be helpful.

Cheers
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Old 02-03-2010, 08:33 PM
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Ah, here is a better picture of the engine swap.
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Old 02-03-2010, 08:47 PM
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friggen sweet. i want a td jeep, leaning towards a comanche though, have to put stacks on it just to make all the cummins rednecks double take...
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Old 02-04-2010, 01:39 AM
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Sweet swap!! What do you have inthat td money wise if you don mind me asking?
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Old 02-05-2010, 07:54 AM
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More money than I want to admit to, but thats usually how these things go you know. But, I picked up the cherokee for a few hundred bucks. It was originally an automatic, so I picked up a 96' cherokee which was wrecked but had the ax-15 which I needed for the diesel swap. After selling 2 4.0L's an aw-4 and t-case I made most of my money back on the original cherokee purchase.

For the Diesel engine, I wanted to make sure it was a good engine and that I had everything I needed. So, I bit the bullet and bought a running 1985 300SD which was mechanically sound but cosmetically a basket case. I bought this benz for $750(the hour drive home was fun, there was no gas pedal just a rod to poke at with your foot. Furthermore the seat springs were broken so i pretty much had to sit with one cheeck on the center consol just to see over the steering wheel!). I've seen just these engine's kicking around for a few hundred, but I was weary to buy an engine I couldn't hear run, plus, who know's how many miles...
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Old 02-05-2010, 11:20 AM
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Now that is an awesome swap! Can't wait to see more about it. Congrats on the hard work.
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Old 02-05-2010, 01:44 PM
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you say the power is about the same is the 4.0? are you going to try and tune it, or dail up the turbo to get more power out of it? Although about it sounds awesome
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Old 02-09-2010, 02:34 PM
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Dar83, I probably won't mess with boost and fuel settings. At the factory settings power is plenty good for me. But maybe someday I'll retire this truck from dd status and make it a full on trail rig... Then maybe bigger turbo crank the fuel...

I have just completed the battery relocation to the cargo area. This weekend I plan to install the Veggie oil tank as I have recieved all the necessary plumbing to do so.

As another note: I drove roughly 130miles on the car and filled her back up. I was impressed by my economy of 24mpg on diesel (mixed driving; sitting at idle, city, little bit of highway). This is cool considering that this same Jeep got 16mpg with the 4.0L gas motor.

http://s805.photobucket.com/home/wfoote1/index
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Old 02-18-2010, 11:02 AM
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Here is the latest video I've posted on Youtube. Sorry for the slow updates on this build, I just got a new camera so picture taking should resume...

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Old 02-18-2010, 11:10 AM
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Still looks pretty stock... Make no mistakes, this Jeep sounds like a school bus!
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Old 02-18-2010, 11:37 AM
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freakin sweet man
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Old 02-18-2010, 11:43 AM
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Awesome swap. Love the idea of diesel torque and fuel economy in an XJ. Have seen some 4BT Cummins swaps done and they're sweet too.

Nice job!
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Old 02-18-2010, 11:44 AM
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thats pretty awesome man i would love to see more pictures and videos....what else do you have planned for it?
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Old 02-18-2010, 04:40 PM
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that is sick man!
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Old 02-18-2010, 04:56 PM
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so it bolts up to the tranny with no adapter ?
And nice work to... likeing the 24 mpg..you did lota work there..
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