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Old 02-03-2008, 02:46 PM
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COLOFIREMAN COLOFIREMAN is offline
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1973 J4800 4BTA Cummins swap

The donor truck is a 1994 Grumman 24' van from the very rusty city of Chicago. I paid $1800.00 for it and it only has 123K on the whole truck. Before I bought it though I confirmed this through the company records and I was able to speak to the fleet tech directly. As it turns out the truck ran excellent and I even drove it 150 miles after I got it home. The best thing about the truck is it's a intercooled version and came with hydraboost. I plan to mate it to the a NV4500

I have a built D60 Chevy for the front and a D70 for the rear. Both have ARB's and 4.88 but I will be running 39's so I hope it will not be too deep of a gear. I plan to take the Premire Welder off of my CJ and the A/C converted air compressor, if I'm able to make it fit. Should be a tough vehicle so I can explore and not have to worry about breaking, elevation, MPG, or power when pulling the off road trailer I built to match.
Here's the van that I bought in Chicago.

Last edited by COLOFIREMAN : 07-15-2009 at 12:53 PM.
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Old 02-03-2008, 02:48 PM
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COLOFIREMAN COLOFIREMAN is offline
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This is the vehicle....






Last edited by COLOFIREMAN : 07-15-2009 at 12:56 PM.
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  #3  
Old 02-03-2008, 02:49 PM
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COLOFIREMAN COLOFIREMAN is offline
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This is the first step to the swap is the easy part. New pictures to follow....

Last edited by COLOFIREMAN : 09-23-2008 at 10:13 PM.
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Old 02-03-2008, 02:50 PM
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COLOFIREMAN COLOFIREMAN is offline
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The motor I have in this truck is going into 1973 Jeep grand Wagoneer that I blew the motor on two years ago plowing snow. The wife wants me to sell it once I've installed the motor in it. I said, "Sure I will......", but inside I was thinking, "Not a chance"

Last edited by COLOFIREMAN : 10-01-2011 at 01:20 AM.
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Old 02-03-2008, 02:50 PM
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This is the turbo I'm using, it's from a 98' Dodge 6BT. I'm also test fitting the manifold that I had cut and welded here locally, thanks CrewCab for the great idea!!! The guy killed about 6 rods welding it due to the cracks, thats what I get for a free manifold. Once I test fit it and get it running well I'll probibly use one from Mooktank. The manifold is also from the 98' 6BT


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Old 02-03-2008, 02:51 PM
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The transmission is going to be a NV4500 that came out of a 1996 Dodge truck. I also plan to run a NP205 Transfer Case. I'll have to machine the back of the transmission a little to enlarge and seal on the power-shaft that joins the input of the T/C and the output of the transmission.


Last edited by COLOFIREMAN : 07-16-2009 at 07:02 PM.
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  #7  
Old 02-03-2008, 02:52 PM
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COLOFIREMAN COLOFIREMAN is offline
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This is the motor plate I found at a yard here. The guy didn't know what it was worth so I was able to "steal" it for $40.00.

Last edited by COLOFIREMAN : 02-03-2008 at 03:12 PM.
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  #8  
Old 02-03-2008, 02:53 PM
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These are the axles I'm using. Front is a Dana 60 that came out from under a Chevy one ton dually. I converted the hubs to single wheel and shorted the axle 4 inches to match the rear's 65" width. The rear Dana 70 is out of a 78 Ford tow truck that was a dually. I plan to change the brakes to disc. They're coming out of my CJ7 that I built some years ago. They both already have ARB's and 4.88 R&P, so I'm hopeful that it's not to deep of a gear because I plan to run 39" tires for deep snow, rocks, and sand. They're on a 12" wide rim that I have DIY beadlocks for.




Last edited by COLOFIREMAN : 02-03-2008 at 03:05 PM.
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Old 02-03-2008, 02:54 PM
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This is the welder I brought many years ago from Pat at Premire. It has saved me and my friends many many times. It's worth it's weight in gold.

Last edited by COLOFIREMAN : 02-03-2008 at 02:59 PM.
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  #10  
Old 02-03-2008, 02:55 PM
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Found a picture of my off-road trailer.


It has a 3500LB axle, 35" tires, air vents, spray lined, and high clearance.

Last edited by COLOFIREMAN : 02-03-2008 at 03:00 PM.
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  #11  
Old 02-08-2008, 09:46 AM
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Need to move the van to a garage today for the engine removal.

Step two in the swap
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Old 02-08-2008, 10:26 AM
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Thanks for bringing this info over here I didn't like going over to the other site to find it.

Also can you tell me what all the 4bt came in? I know that they are in chip trucks, but are they in any other self-propelled thing? I have found them in compressors & Gen sets but I don't know if they would work?

Thanks & keep the updates coming

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  #13  
Old 02-08-2008, 10:40 AM
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The best ones are the ones that come in the Chip trucks. But like they say on that site, try to contact the fleet manager on-site.

Last edited by COLOFIREMAN : 02-11-2008 at 11:20 AM.
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Old 02-08-2008, 11:27 AM
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Pumps, Gen sets, compressor engines should work, you would just have to get the injection pump set up for automotive use.
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  #15  
Old 02-08-2008, 11:43 AM
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Quote:
Originally Posted by COLOFIREMAN
I'm bringng this over from the www.4btswaps.com page that I belong to.
I am a member there also.
I would also ask that you make some postings over at the http://messages.jeep2diesel.org/ forum also.
It was down for a while and is now back.
The activity is slow, but is building as folks know the site is back and folks start to participate.
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  #16  
Old 02-11-2008, 11:21 AM
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COLOFIREMAN COLOFIREMAN is offline
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Quote:
Originally Posted by The PIG Smith
I am a member there also.
I would also ask that you make some postings over at the http://messages.jeep2diesel.org/ forum also.
It was down for a while and is now back.
The activity is slow, but is building as folks know the site is back and folks start to participate.

No problem, I'll post it there soon.
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  #17  
Old 02-11-2008, 04:18 PM
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Quote:
Originally Posted by Chevelleguy
Pumps, Gen sets, compressor engines should work, you would just have to get the injection pump set up for automotive use.


Gen sets and Compressor engines have different govenors as well they typically dont have an AFC air fuel controll system for low boost fueling under load. this system is what compensates with additional fueling to keep the motor running when you let the clutch pout and increase the load against the engine off idle
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  #18  
Old 02-11-2008, 04:43 PM
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Does that van have a hydroboost in it?

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  #19  
Old 02-11-2008, 05:13 PM
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Quote:
Originally Posted by The PIG Smith
I am a member there also.
I would also ask that you make some postings over at the http://messages.jeep2diesel.org/ forum also.
It was down for a while and is now back.
The activity is slow, but is building as folks know the site is back and folks start to participate.

I'll venture back over there too. Haven't been there in a month or so.
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  #20  
Old 02-11-2008, 09:02 PM
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COLOFIREMAN COLOFIREMAN is offline
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Quote:
Originally Posted by Elliott
Does that van have a hydroboost in it?


That's the reason I bought it. I looked on www.dovebid.com for alot of months until the right one came along. I had to go to Chicago to get it but I still have less into it than what one close to me was going for.
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