Fass or Air dog - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 6 (permalink) Old 12-30-2008, 04:10 PM Thread Starter
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Fass or Air dog

I have a 99 dodge 24 valve with a p pump conversion. Which lift pump would be the best. I have a fass 150 now is that enough or do I need a bigger one and which would be the best.
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post #2 of 6 (permalink) Old 12-30-2008, 05:12 PM
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what upgrades are you lookin to do im running everything i got on my stock lift pump right now

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post #3 of 6 (permalink) Old 12-30-2008, 08:01 PM
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I have a FASS 150/150 I think it should be enough of a pump to do all my mods this summer. I plan on doing Level three injectors,bigger turbo,etc. I called Scheid and the man I talked too said the 150 pump is enough of a pump to run a VP44 or a P7100 pump. I think the main difference between the AirDog And the Fass is not very much! except that the Father dislikes the son a whole bunch. simular design simular purpose in life to remove air in fuel,pump fuel and filter fuel. Take your choice both are top notch products.Price would be my deciding factor and warranty . And dealer rep that you get it through. Good luck in your final decision. I think your 150 pump should do you fine. Why spend more than you have to? Is your 'P' pump starved for fuel? If not you should be just fine with what you have.

2001 Dodge quadcab 4x4,Auto transmission,Fass 150/150 pump, Among other upgrades.
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post #4 of 6 (permalink) Old 12-30-2008, 10:48 PM Thread Starter
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My fass 150 that I have now only puts out around 15 psi. I was told that the p7100 likes to have more pressure like 20+. I know the new air dog you can adjust the pressure that you want and the pump will hold it. With what I have now I know you can change or modify the springs but I was told that will void the warranty and the pump won't hold up. As far as the fass 180 and 200 I was told that the 180 is stronger. I will be feeding the p pump which has 4g springs , a plate, and delivery valves and I'm running a set of 811 injectors with the pump.
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post #5 of 6 (permalink) Old 12-31-2008, 06:13 AM
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From what I have read, it sounds like your FASS should be just fine. I'm not sure of the proper pressure to run the P7100 at, so you may want to put a post in the 12 Valve forum and see if one of those guys can tell you. I did however find this page that talks about the different FASS set ups and the recommended pressures for each...stock, mild modified, heavily modified, etc. Give that a look and see what you find out.
Hope that helps.
Here is the link.

http://www.dieselspecialists.net/fass.systems.htm

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post #6 of 6 (permalink) Old 12-31-2008, 03:37 PM
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Quote:
Originally Posted by smokin24valve View Post
I have a 99 dodge 24 valve with a p pump conversion. Which lift pump would be the best. I have a fass 150 now is that enough or do I need a bigger one and which would be the best.
Airdog 100 is good to 500 HP then AirDog 150 is good well beyond the 500HP mark...

AirDog 150


I've got solid 15-16 PSI all the time...

Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
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