Diesel conversion
JK Freak
Joined: Dec 2007
Posts: 874
Likes: 0
From: 07424
Nothing useful because there is nothing to offer. Even SLC commented on a diesel thread saying they wont be doing a swap anytime soon. I forgot exactly why, but if a big company like that cant offer it, Im sure no one here can help. Unless you ship one over seas, which I dont know if thats even possible or have a complete drivetrain (engine,trans,fuel lines and tank,computer, etc)shipped over seas but again I'm not sure thats even possible. Or you can move over seas. Basically none of these are a reality, so basically you're stuck with gas engines.
JK Newbie
Joined: Nov 2008
Posts: 53
Likes: 0
From: Sydney, Australia
I think you will find that Burnsville have done a couple of swaps, not sure if there is a kit available though.
JK Enthusiast
Joined: Oct 2007
Posts: 277
Likes: 0
From: NC
i have a 2007 unlimited sahara with manual transmission. its my daily driver and im getting a very reliable 27mpg
i do like the diesel engine but i would love a hemi 
one day
Attachment 18823
i do like the diesel engine but i would love a hemi one dayAttachment 18823
Deal? JOE>
JK Freak
Joined: Aug 2008
Posts: 770
Likes: 1
From: Aberdeen/Edinburgh/Devon, UK
oh and by the way over the past year I moved from the country into the city (Edinburgh) whilst at uni and am now only getting about 23-24mpg
JK Super Freak
Joined: Mar 2010
Posts: 1,246
Likes: 1
From: Out of Conntrolicut
It seems as if a lot of people are installing Cummins 4BT's in various vehicles. There is a forum dedicated to swapping 4BT's: 4btswaps.com./forum/index.php
I have just started looking at this as an option. The 4BT commonly comes out of "bread trucks" and is apparently good for 500k. Stock they seem to be around 105 hp and 275 torque. But I read about somebody building a "mild" one of 300 hp and 500 torque. So I really don't know. I know it is a 4 cyl so it may fit. Is it a short version of the 6BT which is similar to what's in the Dodge PU?
I know Advance makes adaptors to fit all kinds of trannys and I've seen mention of them going into Cherokee's, CJ5's FJ40's and old Bronco. Maybe if a Hemi can fit one of these could fit. As to cost - if it could be done for the price of a blower? Of course this would only work in non inspection states.
I have just started looking at this as an option. The 4BT commonly comes out of "bread trucks" and is apparently good for 500k. Stock they seem to be around 105 hp and 275 torque. But I read about somebody building a "mild" one of 300 hp and 500 torque. So I really don't know. I know it is a 4 cyl so it may fit. Is it a short version of the 6BT which is similar to what's in the Dodge PU?
I know Advance makes adaptors to fit all kinds of trannys and I've seen mention of them going into Cherokee's, CJ5's FJ40's and old Bronco. Maybe if a Hemi can fit one of these could fit. As to cost - if it could be done for the price of a blower? Of course this would only work in non inspection states.
I have been involved with and seen several Cummins 3.9 4bt single and twin turbos in tj's and yj's and I wish I could stuff MY 5.9 in my JK. Problem is is that the 6bt weighs in @ 1175Lbs .... Then again my Dodge has Dana 60 front to hold the flippin thing up and Dana 80 rear to deal with 1K ftlbs it puts out in modded form that rules out my dream swap.
The 4bt when tuned is an awesome package as size, weight and output make it ideal for Jeep swaps. I have not seen a LBZ or LLY stuffed into a Jeep(LB 7's need not apply) yet and I am willing to bet that the problem is frame width up front on the Jeep. The D-Max block is wide at the bottom when compared to the 5.7 and 6.1 blocks that are commonly swapped in.
This is by far the cleanest tt 4bt install I have yet to see and I believe it put down 207hp, 449 tq that weekend on the dyno. That was 6 years ago and alot has happened just in injection scince then. CLEAN power meaning no heavy soot (Like my volcanic overfueled rig) which was nice because it kept heads tilted sideways wheneer he started it to drive away somewhere and left a stupid 2nd gear burner
JK Enthusiast
Joined: Feb 2008
Posts: 424
Likes: 0
From: In your fridge
Too bad this thread has deviated from the OP question.
That's very cool and I'm envious of the overseas JK diesels but theres nothing in this thread useful to actually converting/swapping the motor.
The most useful thing was the reference to flea bay for a salvaged liberty motor which is evidently around the $2k mark.
That's very cool and I'm envious of the overseas JK diesels but theres nothing in this thread useful to actually converting/swapping the motor.
The most useful thing was the reference to flea bay for a salvaged liberty motor which is evidently around the $2k mark.
.dieselpowermag.com/features/0803dp_2007_diesel_jeep_wrangler_rubicon_jk/index.html[/url]
KSK
Last edited by mkjeep; May 29, 2010 at 11:38 AM. Reason: no non sponsor clickable links please
Super Moderator
Joined: Sep 2007
Posts: 1,734
Likes: 83
From: Arizona
Not exactly the home-brew engine swap.