Author Topic: Cummin's Diesel Jeep (Read 3962 times)

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 !

jeepfourlow · « **Reply #1 on:** October 09, 2005, 08:08:50 PM »

will someone buy it for me?

jagular7 · « **Reply #2 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

Jeffy · « **Reply #3 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.

YJmechanic · « **Reply #4 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.

Jeffy · « **Reply #5 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.

Erik · « **Reply #6 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

Jeffy · « **Reply #7 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.

Erik · « **Reply #8 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....

sharpxmen · « **Reply #9 on:** May 30, 2006, 11:12:46 PM »

i wish the pics were still there :(

Mozman68 · « **Reply #10 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??

Jeffy · « **Reply #11 on:** June 02, 2006, 01:19:11 PM »

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

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Author Topic: Cummin's Diesel Jeep (Read 3962 times)

jeepfourlow

YJmechanic

Erik

Erik

sharpxmen