4bangerjp.com

General Forums => The Mess Hall => Topic started by: Jeffy on October 09, 2005, 07:15:30 PM

Title: Cummin's Diesel Jeep
Post by: Jeffy on October 09, 2005, 07:15:30 PM

Vehicle Description

JEEP COLECTORS ! VERY RARE US POSTAL JEEP CJ WITH A CUMMINS 4B 3.9 LITER DIESEL ENGINE ! Back in the late 80's early 90's the US Postal service only had a limited few of thier Jeeps sent out and rebuilt with Cummins Diesels. They used the orignal frame and rear end. Installed a new fiberglass body, new engine and new TH350 transmission. This Jeep is fun to drive @  40+ miles per gallon ! I have lowered the reserve to what you could part this Jeep out for ! So you can't get loose !
 
I have 4BT Cummins engines if your looking to repower your gas hog !

(http://i7.ebayimg.com/03/i/04/d3/15/f3_3.JPG)
(http://i12.ebayimg.com/04/i/04/d8/73/08_3.JPG)
(http://i7.ebayimg.com/02/i/04/d3/15/e6_3.JPG)

Title: Cummin's Diesel Jeep
Post by: jeepfourlow on October 09, 2005, 08:08:50 PM

will someone buy it for me?

Title: Cummin's Diesel Jeep
Post by: jagular7 on May 30, 2006, 12:39:55 PM

Here is a 4BT up for auction in KS, ends 6/10.

http://www.purplewaveauction.net/cgi-bin/mnlist.cgi?purple16/3155

Title: Cummin's Diesel Jeep
Post by: Jeffy on May 30, 2006, 01:32:02 PM

Nice little engine.  ALthough they are TALL.  I wish they were easier to swap in CA.  Diesel's aren't smogged yet.

Title: diesal
Post by: YJmechanic on May 30, 2006, 03:31:18 PM

what does the swap  need?  I want to go diesal when I am done with my gas.  I think it would be great for wheeling if it is not a crazy swap.

Title: Cummin's Diesel Jeep
Post by: Jeffy on May 30, 2006, 03:50:51 PM

Basically a complete drivetrain upgrade.

The engine only makes around 105hp but has something like 265lft-lbs.  You can use a 4-speed GM transmission to it.  Probably a 4L80e.  Although a TH400 would also work.  NV4500 will also work.

Then you'll need to upgrade the rear axle for sure.  You will also want to upgrade the transfer case.  A minimum would be a HD output shaft.  A better option would be to use a 241, 205 or a Atlas/Stak.  You'd also want to upgrade the front axle while you're at it.  You could get away with the D30 but it would be your weakest point.

Oh and like I said, the engine is tall.  You'll need a body lift and still might have to cut a hole in the hood.

Title: Cummin's Diesel Jeep
Post by: Erik on May 30, 2006, 09:19:56 PM

there was a 93 yj on ebay at $15k a few days ago with that swap... professionally done and 50 state legal.  very clean jeep... absolutely gorgeous

Title: Cummin's Diesel Jeep
Post by: Jeffy on May 30, 2006, 09:29:09 PM

Quote from: "Erik"

there was a 93 yj on ebay at $15k a few days ago with that swap... professionally done and 50 state legal.  very clean jeep... absolutely gorgeous

That's what started this thread.  The auction was removed though.

Title: Cummin's Diesel Jeep
Post by: Erik on May 30, 2006, 10:19:03 PM

guess he realized he wasn't going to get near half of the $50k he invested in the jeep....

Title: Cummin's Diesel Jeep
Post by: sharpxmen on May 30, 2006, 11:12:46 PM

i wish the pics were still there  :(

Title: Cummin's Diesel Jeep
Post by: Mozman68 on June 02, 2006, 06:49:22 AM

Quote from: "sharpxmen"

i wish the pics were still there  :(

It was okay...there is such a thing as TOO many mods...and that Cummins Jeep had too many.

Isn't there a real issue with the power to weight ratio with that engine in a Jeep??  It's real heavy, isn't it??

Title: Cummin's Diesel Jeep
Post by: Jeffy on June 02, 2006, 01:19:11 PM

The 4BT weighs around 680-725 lbs dry. :shock: