I'm thinking the same thing.

 

Call Charlie or Toby they should be able to help you with this???
this is Airdogs MAIN site...
http://www.pureflowtechnologies.com/

 

i would call....
http://www.pureflowtechnologies.com/

or wait a bit I bet Charlie will see this sometime today and answer your questions.

 

What is the noise level like? FASS???

 

https://www.dieseltruckresource.com/...34#post1808334
sound clip at the bottom.....

 

less noise then the fass

 

For your 04.5, if you install the Airdog 100 you just disconnect the factory fuel line and snap on the Airdog supply line - Airdog 100 uses the already installed factory draw tube. (assumes you still have the filter mounted pump)
No need to splice and no suction problems. Go to Diesel Manor they have installation instructions on line. If you are plyable you can disconnect and reconnect fuel hose without dropping tank (short beds are a pita) but lifting bed makes it much easier. If you want to have a fuel gauge order the fitting from Airdog it has a 1/8 npt nipple you just install it in line on the output side.

 

Hi 53, just got home.

To answer the noise question, the AirDog 100s are quiet enough that when standing next to one on the test stand I had to look at the flow gauge to see if it was running. It was! The AirDog 100 fuel pump runs at 2,000 rpm and pumps approx. 98 to 100 gph. depending on altitude. It connects directly to the original suction tube, drawing directly for the original collection basket. On my '99 24valve I just put 32 1/2 gallons in a 34 gallon (I think) tank. My low fuel pressure light has never come on. The AirDog 150, 3,000 rpm and a more noticable motor sound, uses a 1/2" suction tube. It will suck the collection basket dry when the tank level gets low. I don't know how low that is.

Shortbed rv, yes the AirDog 100 connects directly to the original suction tube. Something about pumps and why the line size is so important. Pumps, pushers or pullers, what are we talking about? A fuel pump only pumps a liquid when an outside pressure forces it into the pump inlet, a pump does not suck fuel into it. Like it or not, its just plain physics. The pump creates a vacuum, a pressure lower than ambient. If the pump inlet is above the fuel level, the static inlet pressure (head pressure) is atmospheric pressure minus the 'dry suction lift', the weight of the fuel column in the line from the surface of the fuel to the pump inlet. If the pump inlet is below the fuel level, the head pressure is atmospheric pressure plus the weight of the fuel column.

Note: From sea level (14.73 psi atmospheric pressure) to Denver, you loose about 15% atmospheric pressure and at 10,000 feet, you loose about 30%.

Now here comes the rub, under dynamic conditions the flow created by the pressure differential (vacuum) will be reduced by the restriction of the line (too small or inlet fittings restricted) and the length of the line. Here's a good example. Open your mouth and breath hard, good flow, lungs fill fast. Now close your mouth and breath hard, not so easy, the passage is smaller and restricts the flow. Let's make it more difficult, close your mouth and press one nostril shut. Now breath! The demand created by your lungs is the same, the pressure, atmospheric pressure is the same, the difference in flow is effected by the reduction in passage size. This is the same problem a fuel pump has. The efficiency of the system is in the hands of the designer, you! Use large enough lines. Check the fittings, hydraulic fittings will have a large ID on the line connection end and a much smaller ID on the Boss O'ring end, drill out the small id's. Use curved 90 fittings rather than right angle fittings. One last thing, mount the pump as close to the tank as possible.

Also, diesel fuel will cavitate (vaporize) at about 12 to 14 in hg at room temperature. And, a high flow from the engine back to the tank entrains air in the fuel. Bad for injectors and injection timing for mechanical injectors and disrupts spray patterns on common rail systems. Also creates many additional wear factors.

Hope I didn't bore anyone, just food for thought.

Charlie

 

Thanks Mcneal,

You did a really good, straight to the point answer. I wish I could do that!!!

Charlie

 

My Air dog 150 is killer no complaints at all here. 16 to 18 psi @ WOT, great filtration, can barely hear the thing run, and i can suck her down to the red no problem. [good thing bein a broke white boy payin $3.60 a gallon]

 

Seems all you guys are starting to come realize why us that have been using the airdog for sometime like it so much and you havent seen any complaints about it on the message boards just wish they would have been on sale when i got mine a year ago.