Engine/Transmission (1998.5 - 2002) Another Lift Pump/Fass system or relocate???

[Kent Kuykendall]

At first I thought it must be the gauge since It had not been very long since I put on # 5 lift pump I think , but then pressure started moving all over the place. So It is time for not just another stock pump but a permant solution.



My Question is. Is the Fass worth the $ time and effort? Or is my truck at the current level, but plans to add mods in the future need this? And should I get the 95 or high output Fass. The price is the same so... ... . .



Where is the best place to buy one keeping costomer service in mind.



What is the install time and skill level required?



Is there another alternative that is as good.



Thanks



Kent

 

[SSkinner]

The fass pump is worth the time and money. It has been the best solution I have found for the factory lift pump short falls. The pump is very good not bad to install if you read and follow the directions. Installation takes time to drill holes for bracket and route hoses and wires were they need to be. Installion requires about three hours of time. Never installed anything other then a fass 95 pump. It flows more then the factory pump which is good to help keep the vp44 cool. If I owned a 24 valve I would have one of this pump on my truck. Unless you are planning major engine mods I'm sure the fass 95 will be more then fine. Hope this helps.

 

[blacksheepdiesel]

Airdog!!!

My Airdog has been on for over 100,000 miles and the ONLY thing I have done to it is change filters. Very quiet unit which is important because mine is mounted in the bed beside my auxilary tank. The fuel line supplied with the Airdog is 1/2", the Fass is 3/8". More $ than FASS but well worth it. Better quality design and machine work than the FASS.



WELL WORTH THE EXTRA $$$.



Trent



pm me for the name of an Airdog dealer and for a place to buy the Fleetguard replacement filters for the Airdog.

 

[TClifton]

I put the FASS 2 on and love it. My fuel pressure doesnt drop below 18. I went with just the pump so I could keep my fuel heater, and the filtering from factory seems to do the trick. Easy install and the warrenty is hard to beat. Just my . 02

 

[rweis]

My . 02, I did the RASP.



Bob Weis

 

[Kent Kuykendall]

Airdog?

What is an airdog. I have not heard or seen of this.



Kent

 

[BrysonSmith]

I put the 95gph fass on last week. Installation was a couple of hours but not that hard. I have 19 psi at idle and around 15 at wot.

 

[rweis]

There was a thread about VP44's that Brett Williams of Industrial Injection (VP44 pump rebuilders) replied that the VP44 fuel input psi is optimum at 13. 5 psi.



Up to about 18 psi and down to about 10 psi. The reason was deflection of a diaphram that is designed to deflect . 5mm. More than . 5mm deflection, then the diaphram seals start to be deformed and the more deformed by out of range fuel psi the sooner the VP44 failure (which is internal).



I know guys that have run higher psi for a very long time, but just reiterating what I read, food for thought.



Bob Weis



There is also part of that thread (if memory serves me right ) is that higher input psi does not increase cooling ON THE VP44 (was a carry over from the P7100 operation). The lp only fills a cavity in the low pressure side vane pump and the VP44 return cooling line comes off the VP44 in a totally different place in the high pressure bleed down section.

 

[keimmmo]

I just relocated the factory lift pump ahead of the fuel tank and use large lines and fittings. Good fuel pressure. The original pump lasted 80k miles. The present one has 60k miles on it and going strong. A LOT less expensive than the aftermarket pumps and plenty dependable! Also, parts availability is a concern for me since I travel between Illinois and central Mexico a couple of times a year. I have no "odd ball" parts in my system that would be a problem to get if I have a breakdown.



Steve Keim

 

[Kent Kuykendall]

What is an airdog. I have not heard or seen of this.



Kent

What is an airdog?



Kent

 

[Tinman]

FASS, AirDog, RASP. All are good. Just don't do like I did and waste your time and money on any location, variation, configuration of the stock Carter. Do it right the first time. Don't forget the FASS/Airdog can filter down to 3 microns. Can't hurt our delicate VPs

 

[Kent Kuykendall]

FASS, AirDog, RASP. All are good. Just don't do like I did and waste your time and money on any location, variation, configuration of the stock Carter. Do it right the first time. Don't forget the FASS/Airdog can filter down to 3 microns. Can't hurt our delicate VPs

Are you saying the Fass and Airdog are the same thing or a different product.



Kent

 

[Jeff Knight]

Try here for airdog www.pureflowtechnologies.com

 

[steved]

Are you saying the Fass and Airdog are the same thing or a different product.



Kent

The airdog and FASS are very similar... I believe they even used the same pump motor at one point. The FASS used off the shelf filters that cross reference to a bunch of other brands... the Airdog use "proprietary" filters, but they do have a Fleetguard filter. The airdog is slightly smaller, but where they get mounted (under the bed in front of the rear driver's tire), it really doesn't matter. And IIRC, the Airdog is the father's company, the FASS is the son's company.



I went with a FASS because there were a LOT more people running a FASS than an AirDog (Plus, no one ever returned any of my calls for the AirDog). It was a complete kit and didn't really cost much more than a factory 3rd gen LP would have cost. So far I have around 15k miles on my FASS and wouldn't have done it any other way. Pretty stupidly simple design, but it works.



steved