intank lift pump conversion
Some say there are no disadvantages, I wish they had to freeze their tails off dropping a tank to replace a Lift Pump.
Personally, I would follow birddoctors advice unless you want to do like I do and just buy a replacement pump.........30 Min or less and I have one changed.
Personally, I would follow birddoctors advice unless you want to do like I do and just buy a replacement pump.........30 Min or less and I have one changed.
Cummins Guru


Joined: Feb 2008
Posts: 4,191
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From: Sunny Southern California Land of Fruits and Nuts
From what I've heard Fass is better. I have installed in tank pumps but see no advantage, filter screen is much smaller with in tank pump and more prone to plugging up over time.
common opinion is it barely keeps up with a stock truck, although they seem to last a bit longer than the engine mounted pumps, its over 800$ to get one locally, I ordered an Airdog (lifetime warrenty ) and had it delivered to my door for 600$ (canadian) I believe you can get them in the states just about anywhere for 499$.
If you can get a "cheap" stock engine mounted pump and have a fuel pressure gauge, you will likely get by for a while...but you will need a fuel pressure gauge!
If you can get a "cheap" stock engine mounted pump and have a fuel pressure gauge, you will likely get by for a while...but you will need a fuel pressure gauge!
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The intank pump Really is not worth much to me. I too also added a pump on the frame. I could hardly hold 1-2 PSI with stock injectors and Edge EZ. Now Im able to hold 14 with Bosch 300's and the Quadzilla cranked up.
I changed the intank out to the fass DDRP and it idles at 17psi and WOT down to 11 psi. It has a 5 year warranty i believe and is about 250.00. If you plan on going in the 400hp plus range, you may want a bigger pump. I am happy with the ddrp.
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