Red's deuce camper project

[red EOD veteran]

Agreed, for its size and the engine design being 50 years old its pretty good.

Waiting on shipping right now. 12 volt alternator brackets probably won't be here till Monday, then I'll be on the road to Washington.

Had to spend more in the last 3 weeks on repairs than I've wanted to, and this waiting for shipping has driven me up the wall.

This truck has 3 fuel pumps by design. A low pressure in tank pump, a mid pressure booster pump, then the high pressure injection pump. Both my low pressure and mid pressure pumps died during the trip to unload the shelter. Didn't know about the booster pump until after a new low pressure pump was installed. The problem is, the only way to get a new booster pump is to buy a complete injection pump, worth more than the motor (not gonna happen with me). So, I went the aftermarket route. Installed a Raptor 150 high pressure. That replaced both the low and mid pressure pumps.

That made for some changes. It runs on 12 volts, so, I had to go ahead and install the 12 volt system on the truck. I'm also unable to get over 2300 rpm now, same problem I had during the trip to drop off the shelter. Not a huge concern, just puts me at 50-55mph for the trip. Could be that the new pump can't provide enough fuel pressure for the engine (don't think that's it), or the injection pump is worn out. I've never been able to get over 2400rpm, or get the EGT's over 1250 degrees F with adjusting the fuel.

Might be an engine swap in the future. Since its a similar price to an injection pump.

 

[back woods]

An 8.3 out of a 5 ton would be killer, pull/haul anything at any speed with the same mileage or better.

 

[daddyusmaximus]

Spent a lot of time behind the wheel of those old trucks, love them. I'll follow this build, good job so far. Wish I could talk the wife into letting me get one.

 

[LowTech]

You sure that the in-tank went out and it didn't just blow the fuse? I also see that you added a new line in the tank, I hope that it's nylon or something that can handle being in diesel. When I was messing w/ my in-tank pumps I leaned that the line has to be submersible diesel line. I didn't find any so I kept using the same that was on them.

Have you checked the fuel line under the front, between the primary and the booster? Some times they get crushed. And your primary filter is new? You can put a pressure gauge where the secondary bleeder is and it will tell you loads.

 

[red EOD veteran]

New fuel lines all the way. The stock pump was putting out 5psi, booster pump was worn down to 15 psi. 100 percent sure both pumps were worn out.

 

[red EOD veteran]

Fuel lines are rated for diesel

 

[thebrassnuckles]

Hey, Just saw your thread. Another former AF EOD tech here.

 

[red EOD veteran]

Where were you stationed at? I was a range rat out at Hill AFB.

A 8.3 Cummins is a very solid possibility, just not sure about the length. The engine candidates are:
Cummins 8.3
Cummins 5.9
International DT466
Duramax 6.6

The DT466 and 8.3 Cummins are designed for this weight of truck (and heavier), so they wouldn't be working as much to push it along. I would assume the 466 gets better fuel economy being that its a 7.6L, but can't confirm obviously.

Power ratings for all of them are plenty in stock form. 500-650ft/lbs of torque is a big increase over what the miltifuel delivers.

The DT466 has the reputation as being the most reliable, but all the options are reliable.

Leaning towards the DT466. This project won't happen for awhile. Gotta get moved, find a new place, new job, another ride, all that before I can get started.

 

[back woods]

The 466 is always a good choice. I would stay away from a 5.9 due to their small displacement they will work twice as hard to get the same amount of work done as a bigger motor. Pirate4x4 has a lot of tech about bigger motors in their tow rig section. Another motor option, while kind of an odd ball is a 7.8 Ford I6. In between a 466 and 8.3, same style of injection and can be tuned the same. I just got rid of the 5.9 in my F700 because it wasn't enough motor and picked up a 7.8 Ford with a huge auto trans and 115k miles for only $1300. A lot of good deals to be had out there.

I think the DT466 switched to HEUI from the p-pumps in the late 90s.

 

[red EOD veteran]

I have "no dog in this fight". I put a mildly built pump 6BTAA into Casa Azul and absolutely LOVE it! Casa weighs in "dry" at 16.9 K and fully wet (ready for 2 months in Baja) at a little over 20K. Plus, most times we pull my Scrambler "Mayahaul" down there so we can park in our "secret spots" and once a week make a town run (we are full lightering capable), or go on "recon" adventures. Towing the Jeep I get 10.5 miles per gallon and can go faster than i feel is safe.

I want to thank you guys because up until receintly, I and a small handfull of people were the only ones that had the "guts" to use larger rigs! It is great to follow each of your projects (even though i may not post much) and wish each of you the BEST of success!

Thank you again!

I'd say you have a "dog in this fight". Your rig is just a little heavier than my truck empty (13,720 pounds) and loaded weight will be similar as well.

So the 5.9 Cummins works well for you. Good to hear about the power and fuel economy.

 

[thebrassnuckles]

Where were you stationed at? I was a range rat out at Hill AFB.

A 8.3 Cummins is a very solid possibility, just not sure about the length. The engine candidates are:
Cummins 8.3
Cummins 5.9
International DT466
Duramax 6.6

The DT466 and 8.3 Cummins are designed for this weight of truck (and heavier), so they wouldn't be working as much to push it along. I would assume the 466 gets better fuel economy being that its a 7.6L, but can't confirm obviously.

Power ratings for all of them are plenty in stock form. 500-650ft/lbs of torque is a big increase over what the miltifuel delivers.

The DT466 has the reputation as being the most reliable, but all the options are reliable.

Leaning towards the DT466. This project won't happen for awhile. Gotta get moved, find a new place, new job, another ride, all that before I can get started.

I was stationed at RAF Lakenheath, UK.

 

[back woods]

The 5.9 isn't built for a HDT truck. It can do it but there is a sacrifice of having to run it at wide open throttle almost everywhere. Your truck is no F700, its turning 3 axles a tcase and huge tires. My setup is an F700 with a 10.5ft camper and tows a 24ft stock trailer. The 5.9 made about 300hp and would do the job. I weighed in under 26k total but after 25,000miles I was done running full throttle everywhere. Ever want to haul anything more than the trucks fatass? Good luck with a 5.9, thats why I moved up to a 7.8. It got 8-10mpg fully loaded though. Can't beat low end grunt of a bigger motor for more mileage if it is hardly working to move the rig.

 

[red EOD veteran]

The 5.9 isn't built for a HDT truck. It can do it but there is a sacrifice of having to run it at wide open throttle almost everywhere. Your truck is no F700, its turning 3 axles a tcase and huge tires. My setup is an F700 with a 10.5ft camper and tows a 24ft stock trailer. The 5.9 made about 300hp and would do the job. I weighed in under 26k total but after 25,000miles I was done running full throttle everywhere. Ever want to haul anything more than the trucks fatass? Good luck with a 5.9, thats why I moved up to a 7.8.

The DT466 is my plan

 

[DzlToy]

A properly built and tuned 5.9 will be plenty of motor for anything you would ever do with that truck. They are an MDT engine stock and while I would not tow 80,000 pounds with one, something like this will provide 8.3 CTA or DT466 levels of power and then some. Sure you can get 700-900 HP from either of those motors and more, you can get that out of a 5.9, but compound towing twins making about 500-550 hp and 1100-1200 pounds of torque will eliminate lag, keep EGT down and offer a very large area under the curve.

These guys are not too far away from you in Spokane Valley and BD makes good stuff:

http://www.dieselpowerproducts.com/...8-12v-59l-dodge-cummins-1045310p-1045315.aspx

A mechanical B series Cummins is a very simple and reliable motor, very easy to work on and get parts for too. It would be at the top of my list. A CTA motor or a 466 are also good choices but are about 400-500 pounds heavier than the B series. That is significant on the front of a deuce IMO.

 

[back woods]

A properly built and tuned 5.9 will be plenty of motor for anything you would ever do with that truck. They are an MDT engine stock and while I would not tow 80,000 pounds with one, something like this will provide 8.3 CTA or DT466 levels of power and then some. Sure you can get 700-900 HP from either of those motors and more, you can get that out of a 5.9, but compound towing twins making about 500-550 hp and 1100-1200 pounds of torque will eliminate lag, keep EGT down and offer a very large area under the curve.

These guys are not too far away from you in Spokane Valley and BD makes good stuff:

http://www.dieselpowerproducts.com/...8-12v-59l-dodge-cummins-1045310p-1045315.aspx

A mechanical B series Cummins is a very simple and reliable motor, very easy to work on and get parts for too. It would be at the top of my list. A CTA motor or a 466 are also good choices but are about 400-500 pounds heavier than the B series. That is significant on the front of a deuce IMO.

A 350ci small block will make that kind of power too, it doesnt mean it is the right motor for the application. First of all, why drop almost 100ci (compared to the current motor) on an "upgrade". You can have all the turbo and fuel you want in a 5.9, it will never be able to compensate for the huge low end torque that a big motor makes. A 5.9 will be spinning over 2k to make the power that an 8.3/466 will be making at 1700rpm with half of the effort, and half the throttle input. A built 5.9 "can" do the job, but a built 8.3/466 can move anything. Get into the mountains with a 5.9 and a load, 100% duty cycles for miles and miles arent ideal.