Mercedes diesel in a XJ project- the adapter

[derrickdrew17]

he thinks its under powered. The turbo is umm cute ha its tiny. I'll try and snap pics next time im over there.




P.S. He's thinkin of sellin it

Wow im surprised how its underpowered.... You would think they had globs of power at low rpm's

 

[anthrax323]

My last car was an '83 Mercedes 300D (turbo), and it was anything but powerful... 125 HP, 180 lb/ft of torque (peak torque at 2400 RPM). It's a novel idea for a swap, as the engines will last an eternity, but having owned one I've gotta say there are better diesel options when looking to replace the 4.0.

 

[XJRunner]

cummins 4bt?

 

[derrickdrew17]

How about a newer Bluetech Diesel out of a Dodge Sprinter or a Jeep Liberty?

 

[DieselSJ]

cummins 4bt?

Been discussed here a lot. Search... General consensus is that it is too tall.

How about a newer Bluetech Diesel out of a Dodge Sprinter or a Jeep Liberty?

"Wiring nightmare". Grabbing the entire driveline - engine, trans, xfer out of the KJ would help, but you still need to deal with the integration of the dash and the rest of the systems.

 

[casm]

How about a newer Bluetech Diesel out of a Dodge Sprinter or a Jeep Liberty?

IIRC, the Bluetec diesels were used in the Sprinters and WK Grand Cherokees, but the early KJs got the 2.8CRD which is not a Mercedes engine - that one's made by VM Motori, and my recollection is that it's still the export-model JK diesel.

The 2.8CRD is about perfect for an XJ - on paper. I looked into doing this a few years back, and while it should package into the engine bay without much difficulty, that's about the easiest part of figuring all of this out. You'll need to run the KJ's ECU, which will also mean running the KJ's transmission, since the transmission controller on that engine is (from my research) integrated with the ECU.

If you could find an application for the 2.8CRD where it was paired with a manual transmission, it may be possible to put the AW4 behind it, since the AW4 runs its own controller. However, if the manual-gearbox ECU polls transmission state for gear position (unlikely, but possible), etc., you've got essentially the same problem as with an auto. All of this is before you even get into making your XJ's ancilliaries such as the speedo, gauges, electronically-controlled switchgear, etc. work with the new ECU, which would probably be a nightmare.

It's a shame that there's no drop-in for the 2.8CRD, because in an XJ (which weighs about 800lbs. less than a CRD KJ), performance and economy should be very good.

If you're looking at a Bluetec, the same caveats as above apply.

 

[ctxjlimited]

hmm making me think about swapping the diesel from my 84 300sd with 370k into my xj with 263k....

Apparently the CRD turbo makes a nice upgrade on the benz motors. One of my friends is in the process of doing it to hisl

 

[tbburg]

zluster started the CDR swap a couple years ago, but got sidetracked. I think he got the computer and transmission issues sorted out though.
Here's the thread:
http://www.naxja.org/forum/showthread.php?t=955062&page=14

 

[el_roy1985]

I would love a diesel in my XJ. Would probably run it off of vegetable oil then. At least if there is an apocalypse, I'd still be able to make fuel. haha.

 

[VAhasnoWAVES]

My Girlfriends dad has a Benz turbo diesel in his wrangler.

my step brother's, mother's, best friend's, neighbor's, dog's, first owner's, doctor's, cousin twice removed did something cool like this once...