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Old 08-29-2007, 09:17 PM   #1
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diesel swap

just curious, has anyone here swapped a diesel into their TJ?
I think it would be the ultimate swap

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Old 08-29-2007, 09:53 PM   #2
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I would love to have diesel Wrangler but the best available power plant I'm aware of is the Cummins 4bt and it's a bit heavy and tall in my opinion.

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Old 08-30-2007, 12:12 AM   #3
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There is some guy on Pirate who is putting a 4Cyl Turbo diesel into his TJ. He cot it out of an older Frito Lay Delivery Truck.
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Old 08-30-2007, 12:54 AM   #4
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Here are a couple of links with some information for you:

http://www.dieseltruckresource.com/d...d.php?t=112807

http://www.jeep2diesel.org/

In 1961, Willys Overland offered a 192 cubic inch Perkins diesel rated at 143 ft-lbs of torque @ 1,350 rpm. Records indicate that 152 diesel CJ5s and CJ6s were sold the first year. The engine was available as an option through 1969 with only about 3000 ever sold. Production figures are not available for 1962 - 1969, so the 3000 total is an estimate.

AEV did a coversion with the diesel from the Liberty, but said it was not going to do this one for customers due to issues with the swap.

Hope this helps some.
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Old 08-30-2007, 01:14 PM   #5
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A friend of mine has just finished up a a Liberty CRD diesel swap into his TJ. The wiring was a bit of a chore but it works well.
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Old 08-30-2007, 01:27 PM   #6
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A friend of mine has just finished up a a Liberty CRD diesel swap into his TJ. The wiring was a bit of a chore but it works well.
Somewhere I read that the wiring was the reason that AEV was not going to do this for customers. They made it work, but I think the manhours involved made it cost prohibitive. It looks to me like it would be a great swap once completed.
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Old 08-30-2007, 02:31 PM   #7
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If you had enough change in your pockets or on your gold card they'd do it for you.

There have been several people over the years that have put Diesels into their Wranglers. Most are trail rigs only or are in states where they don't have emissions testing so a check engine light wouldn't hurt them at all.
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Old 08-30-2007, 05:09 PM   #8
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Squier Inc. (479-243-9115) did the harness for him and will be producing them for CRD conversions.

http://www.hotwireauto.com/
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Old 08-30-2007, 05:28 PM   #9
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Isn't there a 4cy wrangler Diesel for export? I swear i heard that Jeep was making one mabey too much Brake cleaner or something.
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Old 08-30-2007, 05:51 PM   #10
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here in aus we get the jk with either petrol or diesel. TJ only has 4.0L petrol here in aus
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Old 08-30-2007, 09:11 PM   #11
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In Germany they are selling it with a 2.8l 4 cyl CRD diesel, it has about 30% more torque than the 3.8l 6 cyl...
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Old 08-30-2007, 10:33 PM   #12
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Isn't there a 4cy wrangler Diesel for export? I swear i heard that Jeep was making one mabey too much Brake cleaner or something.
Where I come from (Peru) there is a lot of XJ ,ZJ & KJ Diesel from Factory.
and most of the CJ and YJ are turned in diesel since the fuel overthere its so expensive. $5 a gallon (97 oct) and the diesel it is around $4 a gallon and give's you more miles per gallon and better hp and torque specially on high altitude.
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Old 08-31-2007, 06:37 AM   #13
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I have heard tales of people swapping transverse diesels like VW TDI motors into jeeps. I wanna see the new WK diesel swapped in.
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Old 08-31-2007, 08:49 AM   #14
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The VW diesel is gonna be pretty anemic in a Wrangler, some of these others look interesting though.
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Old 08-31-2007, 04:18 PM   #15
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Too bad you couldnt throw in a Duramax in there. I think that the 6.6L power plant from an LBZ motor *should* be enough power to get u up the hills / rocks (Stock is 360hp/650tq) and w/ a programmer it will easily add 125hp/225tq. Only thing u would have to worry about is the frame / suspension holding an extra 1,000lbs of weight over the front axle and the enourmous amount of tq it puts out.
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Old 08-31-2007, 05:23 PM   #16
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Just make sure you get the newer duramax or you're going to have Injector problems. I've about 15 of the older ones in here the last 2 yrs and only 1 newer type becouse the newerone used RED diesel and crapped up the injectors, (off road disesel sitting in someones tank and had crud in it)
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Old 08-31-2007, 05:49 PM   #17
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turbo diesel is probably the best setup for power then? less weight more power.. what more can u ask for
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Old 09-01-2007, 09:35 AM   #18
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Duramax? Cummins is the only way to go for a real diesel! The Cummins 4bt would be an easy swap, there is little wiring.
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Old 09-01-2007, 05:37 PM   #19
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and the cummins is a inline six. and runs forever. and gets the most power the easiest.
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Old 09-01-2007, 05:40 PM   #20
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The Cummins 4BT is an inline 4, it's still considerably heavier and taller than the original Jeep engine.
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Old 09-01-2007, 08:05 PM   #21
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due to volumetric efficency, i would suggest a newer duramax diesel due to it being 4v/cylnder, Fuel rail pressure is @ 120,000PSI and max boost is ~35psi lol

However, that being said there is a price for a diesel due to its Cast Iron block / heads etc etc.

~1,000lbs of weight on that fron axle!!!!

Honestly for a jeep application I would think that due to weight constraights you would either want to build a square motor. Maybe a 350 with a low compression ratio and a low end (rpm wise) Turbo.
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Old 09-02-2007, 03:45 PM   #22
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ah ic i didnt catch the 4bt i thought we were talking about the inline turbo six.
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Old 09-04-2007, 05:43 PM   #23
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The Cummins 4BT is an inline 4, it's still considerably heavier and taller than the original Jeep engine.
True but it makes more than enough power to compensate for its weight.
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Old 09-04-2007, 08:42 PM   #24
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Ahh, but it's not the giddy up n go I'd worry about. It's when you're creeping across the side of a hill on somewhat loose dirt and all that weight drags your front end down like a lawn dart
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Old 12-01-2010, 08:07 PM   #25
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The VW diesel is gonna be pretty anemic in a Wrangler, some of these others look interesting though.
HPA motorsports did it and got around 190 horse and 289 ft-lbs of torque.... and it weighs around 50 lbs less than a jeep 4 cylinder. Looks pretty cool to me

http://www.hpamotorsports.com/tdijeep.htm
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Old 01-10-2011, 03:28 PM   #26
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due to volumetric efficency, i would suggest a newer duramax diesel due to it being 4v/cylnder, Fuel rail pressure is @ 120,000PSI and max boost is ~35psi lol

However, that being said there is a price for a diesel due to its Cast Iron block / heads etc etc.

~1,000lbs of weight on that fron axle!!!!

Honestly for a jeep application I would think that due to weight constraights you would either want to build a square motor. Maybe a 350 with a low compression ratio and a low end (rpm wise) Turbo.
D-max has aluminum heads! It still weighs alot though.
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Old 01-10-2011, 03:44 PM   #27
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turbo diesel is probably the best setup for power then? less weight more power.. what more can u ask for
Thats the set-up on the 2.8 litre CRD engine we get here in Europe. The turbo has a good kick when accelerating in the higher gears. The only downside is that it sounds like a tractor when its cold.
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Old 01-10-2011, 07:48 PM   #28
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This guy put in a 4BT Cummins in his TJ. my stainless dash It is pretty interesting and looks good. Also, a Duramax in a Jeep? Seriously people, a V8 that is like over half the size of the Jeep? I would be majorly impressed to see a Jeep with a Duramax.
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Old 01-10-2011, 08:34 PM   #29
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Now we are talking: Cummins 4BT/6BT Bulletproof! The 6BTAM2 in my boat kicked out 370HP.... A 4BT would give the TJ GOBS of torque. I spose mileage would be decent but whooo would care? Can you see that puppy loping along a sandy beach not even heating up?
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Old 01-10-2011, 08:40 PM   #30
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Holy thread resurrection Batman!!! Who dug this one up from the grave? This one's been dead for over 3 years.


FYI, I'll be putting a 6BT in my TJ in about a year or so. Got the engine, axles, and transfer case already.

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