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79 J20.... Building The Diesel Truck Ive Always Wanted!


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#1 ComancheKid45

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Posted 17 December 2013 - 08:41 PM

Hey Guys! Ive enter a new realm of the forum and am embarking on an entire new project away from anything ive ever attempted before. Ive had a blast with my Comanches and Cherokees over the past few years, and still continue to but after setting out on this adventure last Spring I have now finally aquire the 1st peice of the big puzzle and am ready to announce to you all my next project....

 

 

If you havent guessed it already, here is the start to hopefully an awesome adventure! 

 

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Yep, thats right....A 1979 Jeep J20 series pickup! This truck was retired from a local Fire Dept. back in April and was owned by the Pennsylvania Dept of Forestry prior to that before being given as a gift to the FD. Since it was a state owned truck it was auctioned off on a government website which I managed to win, by being the highest bidder 1st! (was matched in the final seconds and about gave me a heart attack!) I plan to pick it up Friday.

 

The very basic plans are 1st and foremost, purchase a 1999 or down model year Dodge 12 valve Cummins Pickup, followed by swapping the Body and mating it with a very nice flatbed. In turn creating a reliable diesel fullsize truck that can be used for towing or just showing off as well as still be a JEEP! This project is long term and is sure to develop many twist and turns along the way. Ill do my best to keep it updated in here just as i have with all my previous projects. I'm extremely thrilled to get this underway and can't wait to see how it all plays out! :D

 

Here is another photo of the truck as it sits today.

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and a shot of it in its former Glory/

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Hoping to end up with something like this in the end. (Subject to change)

 

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Check back now and then, this is sure to be fun!  :thumbsup:



#2 onlyinajeep726

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Posted 17 December 2013 - 08:48 PM

Sub'd sir.  I'm really looking forward to how this turns out. :yes:


1986 Comanche Custom, 4.0L I6, AX15e manual, NP242, Open 3.54 HP D30/D35, 7-ft bed, dual exhaust, 225/70R/15, 1" BB lift, etc. -- <MJ Build>
1988 Cherokee Pioneer, 4.6L I6 Stroker, AW4 automatic, NP231, Open 4.10 HP D30/Locked C8.25, 31x10.5x15 Dunlop Mud Rovers, 4" lift, etc. -- <XJ Build>

Death Wobble?


Comanche Stock Specs
 
February 2014 MJOTM!!!

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#3 MancheKid86

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Posted 17 December 2013 - 10:57 PM

id buy a j series truck in a heartbeat,

can't wait to see more pics!

 

looks like a really clean base to start off of!


 

we're far too lazy to click links. :D

..............or read.

 

HillBilly Delux

1989 4.5L 5 Speed 4wd, stroker lockers doubbler

Bad @$$ Comanche
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Old Rusty
1989 4.0L auto 4WD
The Never Ending Story R.I.P
1986 2.5l 4 speed 2wd - R.I.P


#4 gogmorgo

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Posted 17 December 2013 - 11:21 PM

There's a fair looking J truck with a tray that I see parked near my church every now and again. I'll have to snap a pic next time I see it. If I ever feel the need for a bigger truck, that's the way I'd like to go if I can.

 

Looking forward to this build. I'll echo MancheKid's sentiment. That thing looks pretty mint. 


::gogmorgo

:Canadaflag:'91 longbed 4x4 MJ - 498,000km... knock knock knockin' on heaven's door & relegated to project status.

DD 1996 Lada Niva 1.7i - 047,000km... Сделано в СССР.

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#5 carnuck

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Posted 18 December 2013 - 01:11 AM

There are several rigs already done on http://ifsja.org and http://fsjnetwork.com

The biggest factor seems to be engine weight. I think I'd sooner put that motor onto an M715 because it has a beefier frame and the big 3 discovered the hard way stock frames weren't beefy enough to avoid frame cracking but a N/A 6B should be okay.


http://comancheclub....0-near-seattle/

'87 Comanche converted to 4x4 4.0L AW4 NP242, lifted 5 1/2", 33/9.50/15 tires, upgraded brake booster, 90 wiring harness and open cooling system. Tilt, column shift, bench seat, extended front bumper with front tow hooks (room for hidden hitch), canopy, recent new rear bumper 3500lb pull $3500 Good reliable daily driver

 

th_photo-3.jpg


#6 ComancheKid45

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Posted 19 December 2013 - 09:38 PM

I should have this truck home tomorrow afternoon! Look for more photos for sure :D



#7 ComancheKid45

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Posted 20 December 2013 - 03:24 PM

Brought it home this afternoon! :D

 

1470111_10152091780814834_580101714_n.jp



#8 carnuck

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Posted 20 December 2013 - 03:41 PM

Sweet brow! Later, if I find a cab as rust free as I have now, I'll swap the one on my Honcho. For now though, I wish I could access it to get it running!


http://comancheclub....0-near-seattle/

'87 Comanche converted to 4x4 4.0L AW4 NP242, lifted 5 1/2", 33/9.50/15 tires, upgraded brake booster, 90 wiring harness and open cooling system. Tilt, column shift, bench seat, extended front bumper with front tow hooks (room for hidden hitch), canopy, recent new rear bumper 3500lb pull $3500 Good reliable daily driver

 

th_photo-3.jpg


#9 ComancheKid45

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Posted 21 December 2013 - 01:18 PM

Well until the ground dries out a bit its stayin on the trailer. That doesnt mean i can't tinker around with it a bit though!

 

I got the old 360 running, the carb likely needs work but a proven running Engine will sell alot easier when the time comes.

 

FILE0017x_zps9384e5f9.jpg

 

The dash is pretty much gone but otherwise the interior is in very nice shape, including a full Rhino lined floor!

 

FILE0019_zps621d14e8.jpg

 

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Only 16755 Miles! Or 116755......Haha

 

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Rear Dana60. and a very clean chassis!

FILE0020_zps481514fb.jpg

 

Just a few more shots of the Cab, The cleanliness of this truck is why i fought so hard to get it! NO RUST!

 

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Progress will be a bit slow untill nicer weather greets me in the spring, O Well thatl let my wallet recover.  :thumbsup:



#10 onlyinajeep726

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Posted 21 December 2013 - 01:48 PM

Didn't realize that the rear axles in these were offset from center...  Pretty cool.  That truck is sooooooo clean.


1986 Comanche Custom, 4.0L I6, AX15e manual, NP242, Open 3.54 HP D30/D35, 7-ft bed, dual exhaust, 225/70R/15, 1" BB lift, etc. -- <MJ Build>
1988 Cherokee Pioneer, 4.6L I6 Stroker, AW4 automatic, NP231, Open 4.10 HP D30/Locked C8.25, 31x10.5x15 Dunlop Mud Rovers, 4" lift, etc. -- <XJ Build>

Death Wobble?


Comanche Stock Specs
 
February 2014 MJOTM!!!

243771.png 
243773.png
316715.png


#11 Minuit

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Posted 29 December 2013 - 09:07 PM

:bowdown: Up until now I didn't think it was possible that an original rust-free J20 still existed. Subscribed. That's also some really nice paint for a '79, if it's the original paint.


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I can Photoshop things for you! If you want to see how your truck will look with different wheels, etc, just let me know!

Driveway Ornament to Daily Driver:1991 Jeep Comanche: 4.0L, AW4, 2WD - November 2013 MJOTM!


#12 ComancheKid45

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Posted 30 December 2013 - 12:06 AM

Thanks! I know its not the original paint, and likely not even the original rocker panels and such since it was repair and repainted in the fire companies colors. However its its in incredible rust free condition which is defiantly what matters.

 

I'm on the hunt for the donor truck now and hope to have 1 acquired by spring time  :thumbsup:



#13 Minuit

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Posted 30 December 2013 - 03:33 AM

Guess the search is still on :P Still very pretty as is and I can't wait to see what happens to it.

Buyer's Guide
143371.png

I can Photoshop things for you! If you want to see how your truck will look with different wheels, etc, just let me know!

Driveway Ornament to Daily Driver:1991 Jeep Comanche: 4.0L, AW4, 2WD - November 2013 MJOTM!


#14 Korsch_RS

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Posted 06 January 2014 - 10:11 PM

Subscribed! Love the full size jeep trucks and the Cummins is the perfect engine :)

#15 hick92

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Posted 07 January 2014 - 06:18 AM

Dwwwwwamn

#16 ComancheKid45

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Posted 07 January 2014 - 04:43 PM

I may have a lead on a possible Cummins donor for this truck.....ill be sure to keep ya posted ;)



#17 86customanche

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Posted 08 January 2014 - 03:04 PM

That's the cleanest J20 I've seen!  :thumbsup:  It's possible I wanted a J20 before I ever wanted a Comanche. I know that sounds crazy but for some reason I just love the J series trucks. I will certainly subscribe  :popcorn:  and follow along with your build.


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My car history:
98 Taurus-first car, totaled
00 Mazda Protege-DD, sound system, 17s, cai
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92 MJ-trail rig-4.0L I6/ax-15/np231-SOA w/34x10.5 LTB
Build thread: viewtopic.php?f=7&t=33858&p=333694#p333694
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#18 mzairboy

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Posted 11 January 2014 - 01:58 PM

I look forward to seeing what you do to your truck. I have a 6bt in mine, and it is awesome! Zach from Z&M Jeeps has a lot of different parts if you are looking for some.



#19 ComancheKid45

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Posted 11 January 2014 - 08:18 PM

Thanks!

 

Alot of whats to follow depends on the donor truck. Once thats acquired than progress will move forward. Hopefully around Spring time this sucker will really begin to take shape. :)



#20 a4xnut

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Posted 05 February 2014 - 04:41 PM

Didn't realize that the rear axles in these were offset from center...  Pretty cool.  That truck is sooooooo clean.

 

That's because this one has Quadratrac...

 

My son's first vehicle was a '78 J20 with a 401/T-18/Dana 20 and it had a centered D60.


Paul

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