Hadaku

I'm looking at swapping the engine in my '97 XJ for a diesel and I'm not sure what type or size of diesel to put in or what it will cost. Any tips? My Jeep is just a daily driver at this point.

JeepCoMJ

you'll never regain the $$$ the swap will cost in fuel savings.

not before the jeep rusts out at least. if your 4.0 is bad, put a new one in.

Caish

If I was to do it.
I would be looking at the Mercedes 5 Cylinder diesel.
http://jalopnik.com/385448/engine-of...ylinder-diesel
You'll have to locate a totaled complete car for the engine and tranny.

Heres a Grand Cherokee that someone converted to Diesel.
http://www.canev.com/Jeep.html

I would expect a diesel to get 30+ mpg.

JeepCoMJ

screw the mercedes...it barely fits.

cummins 4bt fits decent and allows some free space to work on it.

96xj4x4

hes right i've been interested in this too...the only engine that would even be semi economical to swayp would be the 3.9l 4bt cummins and thats not happening without ALOT of work and MONEY

JeepCoMJ

eh. you can get the entire front end of a bread van with a 4bt for $1300.

but, the rest of the parts add up.

ntomsheck

Also keep in mind that the 4bt by itself is close to 750lbs, whereas the 4.0 with trans doesn't even weigh that much. The cherokee is unibody too, you'll have to factor that in. Perhaps some strengthening should be in order, if you plan to hop up the motor the slightest bit. Stock, this motor has almost 130 ftlbs more torque.

96xj4x4

i've had this link for awhile. http://www.4btswaps.com/forum/showth...9299-Goat-s-XJ this is the only build that i've found, and he had to do some major modification

95THORxj

stick with the 4.0!!!

1991Jeep_Man

STROKE THE 4.0??????? lol

If I remember correctly, using some 4.2L parts and some various machining, you can stroke the 4.0 to a 4.6 or something like that. Supposed to pump out more power and everything.