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Dodge Diesel Tech Articles All years of Cummins.

 
 
 
 
 
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  #1  
Old 12-09-2008, 07:26 PM
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Default Bottom Feed Fuel Supply Line

Pictured here is the application for a 2nd generation Cummins but I suspect it would work the same on any year or brand of truck.

In the first pic it shows the outside of the fuel tank and the mounting location that works best. By coming off the front of the tank nothing is sticking down below the frame rail. If needed you could even mount a small skid plate to the bottom of the frame rail to cover it all up. I also installed a shut off valve in case I need to do any fuel line or pump work without making a mess.

This pic was taken back when I had a dual lift pump system installed just in front of the fuel tank on the frame rails so it really makes it look crowded under there but never fear, yours will look much cleaner without all the extra space restrictions.
Fuel Tank Bulkhead and Shut-off.jpg

Now for inside the tank. YOU HAVE TO install a hose that extends to the center of the inside of your tank. This makes the fuel pick up point the same as on stock and prevents your fuel lines from running dry if your goin up hill to long. You also need some kind of screen to filter out debris before it hit's your lift pump. In my case I used a $3 fertilizer screen from the local farm store with a pipe clamp. I like simple and cheap.
Intank Pickup Tube.jpg

I used the stock pickup outlet at the top of the tank to run my overflow back into the tank and capped off the old return inlet.

By using this method gravity is not fighting your Lift Pump. It's straight shot from the fuel pick up point right to the pumps. Gravity is working in your favor instead of against you having to suck fuel up a small tube constantly.

I'll welcome any questions on this. It's been in use on my truck for well over 150,000 miles now and one of the few things that I've had zero problems with.

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99 Quad Cab, 4wd, Drag Comp W/Pump Wire & Boost Elbow installed, K&N Air Canon, MBRP exhaust, Belt Drive Lift Pump and bottom Bulkhead feed from the tank, Isspro EV Pyrometer, Boost Gauge, Fuel Pressure Gauge, DT Pro Fab Trac Bar, South Bend 13-1.25 Con O Clutch, Ranch Hand Bumper, Borgeson Steering Shaft, Black Silicone Boots, 2" Lift Soft Ride Front Coils, Solenoid High Idle Kit, Bilstein 5100 HD Shocks, Rickson 19.5 Wheels w/Hancoock Rubber, HD Maxx Link Sway Bar Links, Superlift dual front stabilizer, EGR Brakes Front and Back, RV275 Injector's, Blue Chip VP44, Prodigy brake controller, B&W Gooseneck hitch and more I can't remember right now. Not to mention more to come I'm sure.
374.2/846.7 at 30psi

Have front end or steering problems, read this through thread: http://www.dieselbombers.com/5-9l-24...d-rebuild.html
  #2  
Old 12-12-2008, 06:47 AM
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Good write up Uncle!!!

Thanks!

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  #3  
Old 12-12-2008, 10:43 AM
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Nice, I just used the Haisely pickup that comes in from the top of the tank right behind the stock pickup...

Just remember, no matter which way you do it, don't let the new pickup interfere with the old one. I had to re-drop my tank to move the stock pickup, because it was hitting the brass Haisely pickup, and making my fuel gauge worthless (it would stick at 1/2 tank, then bounce around and get wedged at Full).

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  #4  
Old 04-14-2009, 04:06 PM
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Are those pumps mounted to a 2X4??



Redneck engineerin' at its finest...

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  #5  
Old 04-14-2009, 05:44 PM
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Originally Posted by Dr. Evil View Post
Are those pumps mounted to a 2X4??



Redneck engineerin' at its finest...
Nahh, even I'm not that bad anymore. Had em mounted to a piece of aluminum C stock with rubber matting between the pumps and the metal to cushion the bumps. Mounted like that when I needed to work on the pumps I unfastened the hose fitting at the front and back of the mount and pulled the whole thing out as one piece, pumps and all so I could work on them on a bench instead of on my back in the dirt.
  #6  
Old 04-14-2009, 08:03 PM
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Anything to get rid of the crappy stock fuel system...



What you dont like working on things under the truck?? Thats all the fun...

Actually, thats a good idea for easy pump removal....
 
 
 
 


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