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06-01-2009, 05:12 PM
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Bleedin' Gasoline
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Join Date: Jun 14, 2000
Location: Maumee, OH
Posts: 1,662
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Project Humpty '74 J20 Diesel Build UPDATED!
Hello all,
I've been busy working on this project for months now and I finally remember to talk to the owner about putting a post here on the forum detailing this build. I'll give a specs list, then link to a bunch of pictures. Please feel free to ask any questions.
Truck: 1974 Jeep J20. 40K original miles, barn find in Ohio.
Sheetmetal: NOS cab, fenders, valance, radiator support, doors. '67 Bed
Engine: Cummins 4BTA from a bread truck. Turbo charged, intercooled, 3.9L 4 cyl. 130HP stock.
Trans/Xfer: NV4500/Np205 from '90 Dodge 6bt truck. Same truck gave up its accessories for the engine
Axles: Stock J-20
Springs: Custom Alcan Springs 8 leaf front, 7 leaf rears (Replace the 3 leaf front, 2 leaf rear original springs)
Bilstien Shocks
Dual Battery Tray
Aftermarket Heat and A/C mounted in the cab behind the dash
Extensive Dynamat in the cab
Hydraboost brakes Discs front, Drums Rear. SS fuel and brake lines
Link to the pics: http://photobucket.com/humpty
Organized the pics a little better with better links:
All the Sound Proofing Pics: http://s689.photobucket.com/albums/v...umpty/Dynamat/
Progress Pics by month in subfolders.
Last edited by zmjeeps : 02-01-2010 at 05:01 PM.
Reason: Change Title
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06-01-2009, 05:32 PM
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Join Date: Feb 10, 2003
Location: Back in Mountainair NM
Posts: 20,085
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Neat
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06-01-2009, 06:21 PM
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Master Mechanic
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Join Date: Jan 01, 2005
Location: Pine Mountain Club, CA
Posts: 1,280
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The photos didn't show up for me but it might have been my computer. Must be nice to have a diesel build all done and running, would be great to have. Diesel is actually cheaper than gas again here.
I look forward to seeing more.
__________________
Drew
77 Cherokee WT
Last edited by Fiodh. Argus : 06-01-2009 at 06:24 PM.
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06-01-2009, 06:27 PM
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304 AMC
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Join Date: May 02, 2003
Location: Middletown, PA
Posts: 1,574
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I have watched and assisted (just a little) with this project and this truck is really cool! The oil burner along with the HV4500 and NP205 is a great drivetrain. Were Zack find some of these NOS parts still amazes me! he cab still had tags and stickers from the factory!
__________________
FSJ-Earl
2002 F350 Diesel - tow rig / family hauler
2008 4 door JK Rubicon - Wife's Daily Driver
1989 GW - the one that started it all
1983 - J15 - J10 body + J20 running gear = J15 Trail rig
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06-01-2009, 06:28 PM
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FSJ Maniac
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Join Date: Oct 06, 2005
Location: Waco, Tx
Posts: 2,558
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Those inner fenders were a little rough.
Looks like a cool build...I was thinking about building a battery tray for mine eventually right where you put that one. Thanks for the pic ideas. 
__________________
'10 Chevy Silverado 5.3L - The DD.
'81 Jeep CJ-7 Laredo
'73 Jeep J2000 - On the perpetual backburner.
Texas A&M Offroad
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06-01-2009, 07:04 PM
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Join Date: Aug 09, 2000
Location: New Haven, CT
Posts: 6,270
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Quote:
Originally Posted by Fiodh. Argus
The photos didn't show up for me but it might have been my computer. Must be nice to have a diesel build all done and running, would be great to have. Diesel is actually cheaper than gas again here.
I look forward to seeing more.
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Try this:
http://s689.photobucket.com/albums/v...mjeeps/Humpty/
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1969 M715 6x6
1963 J300 Swivel frame
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06-01-2009, 07:05 PM
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Join Date: Aug 09, 2000
Location: New Haven, CT
Posts: 6,270
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Very nice!
[Nitpick mode]
Quote:
Originally Posted by zmjeeps
Engine: Cummings 4BTA from a bread truck.
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[/Nitpick mode] 
__________________
1969 M715 6x6
1963 J300 Swivel frame
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06-01-2009, 07:10 PM
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Murphy's Law Poster Child
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Join Date: Dec 03, 2003
Posts: 10,707
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Very cool!
__________________
You know it's bad when your car's on the EPA's 10 most wanted list!
'82 J10
'65 J2000
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06-02-2009, 07:16 AM
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Bleedin' Gasoline
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Join Date: Jun 14, 2000
Location: Maumee, OH
Posts: 1,662
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Quote:
Originally Posted by TexTJ209
Those inner fenders were a little rough.
Looks like a cool build...I was thinking about building a battery tray for mine eventually right where you put that one. Thanks for the pic ideas. 
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Yes they were, and so was the underside of the bed, but the inside was great because of the cab. Original owner only drove it in the winter and then parked it in the barn, so it got eaten from the inside out. No worries, have NOS inner fenders to replace them.
Anyone else having trouble seeing the pics?
Zack
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06-02-2009, 07:26 AM
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New Member
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Join Date: Jun 02, 2009
Location: Phoenix, AZ
Posts: 8
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Hello all. New around these parts but just wanted to say nice truck! Awesome build! I'm getting ready to convert my '89 Blazer from the 5.7 to the 6.2 diesel myself 
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06-02-2009, 07:26 AM
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Gear Head
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Join Date: Jan 27, 2008
Location: Colorado springs, co
Posts: 512
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pic problems
Hey Zack,
I had a lil trouble seeing the picts... kinda looked like thumbnails that wont get bigger??
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06-02-2009, 07:37 AM
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Bleedin' Gasoline
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Join Date: Jun 14, 2000
Location: Maumee, OH
Posts: 1,662
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Quote:
Originally Posted by jeepdreamer
Hey Zack,
I had a lil trouble seeing the picts... kinda looked like thumbnails that wont get bigger??
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In the top right corner, click on GRID and it will make them all a litttle bigger, then click on a single pic and it should make it very big. You could also use the slideshow and see them one at a time in large format.
Zack
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06-02-2009, 09:18 AM
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Jeep Polygamist
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Join Date: Oct 08, 2003
Location: Travelers Rest, SC
Posts: 6,150
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Great project!
But now it will have brow envy. Rust free, but green with envy. 
__________________
1994 YJ
1986 Comanche
'57 FC-150
Carolina Full Size Jeep Club
www.cfsjc.com
www.patriotguard.org
Quote:
Originally Posted by Jeepstress
"Go forth and be a tool".
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Quote:
Originally Posted by 78 Wagoneer
This year for ECI I got a Jeep. Pretty important upgrade.
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06-02-2009, 09:25 AM
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Bleedin' Gasoline
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Join Date: Jun 14, 2000
Location: Maumee, OH
Posts: 1,662
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Quote:
Originally Posted by Casey
Great project!
But now it will have brow envy. Rust free, but green with envy. 
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It will be funny to watch people try and figure out what year it is with the '74 frame and suspension, 80's browless cab and a '67 bed with round taillights...
Z.
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06-02-2009, 09:38 AM
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Grease Monkey
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Join Date: Mar 10, 2009
Location: Loganville, GA
Posts: 323
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This is really a well documented project and the pictures are really nice. I have been thinking  about this for a few months now.
Thanks
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06-02-2009, 09:53 AM
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Dragin Az
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Join Date: Oct 17, 2003
Location: Chino Valley, Arizona
Posts: 8,054
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Quote:
Originally Posted by Redwookie
Hello all. New around these parts but just wanted to say nice truck! Awesome build! I'm getting ready to convert my '89 Blazer from the 5.7 to the 6.2 diesel myself 
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Welcome from up the hill. You should put that Diesel into a Jeep!
Zack, That is looking awesome. I have a '77 J-20 that I want to do the same with so I have a good strong work truck. Thanks for the pics, they worked first time for me.
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06-02-2009, 10:44 AM
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304 AMC
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Join Date: Sep 13, 2007
Location: TX
Posts: 2,290
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Nice project
Subscribed...
recognize that dual battery tray for a CJ.
Vintage Air A/C ?
LMK if I can help.
__________________
67 Gladiator 15K J3000 AMC 327, PTO, 35" BFG's
69 Jeepster 8701 convertible
80 Honcho Sportside
82 CJ-8 75K org SR decals
82 Cheroeke Laredo 24K
83 CJ-8 50K 401, ARB60's, F&R Winch, 38"
84 CJ-7 38K Garnet Int., Jeep 8274 winch
84 CJ-8 mud Scrambler
87 J 20 36K smooth alum camper & boat rack.
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06-02-2009, 10:54 AM
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Bleedin' Gasoline
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Join Date: Jun 14, 2000
Location: Maumee, OH
Posts: 1,662
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Quote:
Originally Posted by red mistress
Subscribed...
recognize that dual battery tray for a CJ.
Vintage Air A/C ?
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Yes, Vintage Air/Hot Rod Air. I put it over in the pass area instead of in the middle. Fits behind the dash nicely and doesn't hang down as far as a stock AC unit. Part of the battery tray for a CJ. Had to modify the inner fender for the third mount.
Z.
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06-02-2009, 10:56 AM
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out of order
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Join Date: Jun 08, 2005
Location: Land of froot loops and cukcoo-nuts, CA
Posts: 9,458
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Nice!!
Wanna sell me a set of the custom motor mounts so I can ship them to my dad for his 4BT swap?
__________________
Tony
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06-02-2009, 11:01 AM
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Bleedin' Gasoline
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Join Date: Jun 14, 2000
Location: Maumee, OH
Posts: 1,662
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Quote:
Originally Posted by babywag
Nice!!
Wanna sell me a set of the custom motor mounts so I can ship them to my dad for his 4BT swap?
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It depends which type of mounts you want to use. I used the hydro mounts and am taking a bunch of flack from some of the diesel guys that they can't be mounted past 4 degrees or they don't work. I don't get it, the forces work out, but whatever. I can make you a pair of plates like the ones I started with to bolt to the motor. Its a great starting point for making your own...
Zack
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