Engine/Transmission (1994 - 1998) Lift Pumps

[CESpitz]

I have Read in magazine and on the net people debate the pros and cons of Fass and Air dog pumps and which is better I would be interested in everybody
thoughts to help me decide which way to go this would be going on a 98 12v with some mods cam, turbo and pump. Any thoughts would be a great help
Thanks

 

[Cummins12V98]

Why not leave the stock Carter lift pump?

 

[GAmes]

If you want to spend big bucks on a pump that isn't nearly as reliable as the mechanical pump I think the consensus is the FASS is better. However, the stock pump will support 400+ HP and in my case have 300k+ miles longevity for about $100. Or you can replace the electric pumps for several hundred dollars a pop every 100k or so. Your choice.

 

[CESpitz]

Thanks for the help. With the stock pump my pressure drops to about 8 to 10 psi when I put it under load and I am not sure that is enough . I am using a mach. gage
so I think it is pretty good numbers I do not want to spend more money than I have to. Also if you use a stock pump is it wise to add a inline filter before the it.
THANKS FOR ANY AND ALL HELP

 

[GAmes]

Thanks for the help. With the stock pump my pressure drops to about 8 to 10 psi when I put it under load and I am not sure that is enough . I am using a mach. gage
so I think it is pretty good numbers I do not want to spend more money than I have to. Also if you use a stock pump is it wise to add a inline filter before the it.

If your system is stock you already have a prefilter. If you have never cleaned/replaced it that could account for the drop in fuel pressure.
http://www.genosgarage.com/FLEETGUA...LTER-94-98/productinfo/3845400S/#.VTQnOkJ_ljo

 

[GAmes]

Thanks for the help. With the stock pump my pressure drops to about 8 to 10 psi when I put it under load and I am not sure that is enough . I am using a mach. gage
so I think it is pretty good numbers I do not want to spend more money than I have to. Also if you use a stock pump is it wise to add a inline filter before the it.

If your system is stock you already have a prefilter. If you have never cleaned/replaced it that could account for the drop in fuel pressure.
http://www.genosgarage.com/FLEETGUA...LTER-94-98/productinfo/3845400S/#.VTQnOkJ_ljo

 

[BigPapa]

Have you replaced your over-flow valve? If you've not changed it yet or in a while, it could be getting weak. I would suggest a Tork Tek available here:

http://www.torkteknology.com/products/TORK-TEK-CUMMINS-ADJUSTABLE-OVERFLOW-VALVE-OFV010.html