putting a fuel pump to push to lift pump?

5.9sledhead · 10-31-2011, 05:08 PM

hey so im thinking of putting a 72 gph 5-9psi pump and 3/8 or 1/2 lines to push to my lift so it has fuel readily available and doesnt have to pull it all the way from the tank. Would this be worth doing? i drop down to 12 psi at wot and would like to never see it get below 20. any ideas or thoughts on if this would work? would buy a fass but thats a bunch of money for a highschool senior at the moment.

RPegram · 10-31-2011, 06:22 PM

Your stock Cummins fuel pump is good for 500-600 HP, you don't need another pump to "push" fuel or any fancy electric pumps. Changing out the fuel lines is an excellent idea, but again, the stock 3/8" feed line is plenty big until you start pushing some serious HP. Diagnose your pressure and repair as necessary and save your money for something else.

5.9sledhead · 10-31-2011, 07:57 PM

My lift pump is only a couple months old and I get about 22 idle. And 12 wot so obviously with the fueling I have I need more or I'm starving my injection pump. Hey just a thought but would a tork tek over flow valve help it at all?

illflem · 10-31-2011, 08:02 PM

Highly doubt you have enough hp to drop the pressure enough to require an electric pump.
Something else is wrong.
Bad overflow valve, plugged filter or kinked hose.

DC9612V · 10-31-2011, 11:04 PM

Get OFV from tork teck and dont look back...When people say replace fuel line do they mean the metal fuel lines going from tank to pump? Do you get bigger rubber ones or bigger metal ones? Not meaning to hijack just curious.

country_hick · 11-01-2011, 12:07 AM

Metal lines only get replaced when they get rusty (inside or out). Rubber lines can go bad without major announcements like rust on metal. If your metal lines are rusty replace them. If your metal lines are still factory black and not rusty on the inside replacing them makes no sense.

5.9sledhead · 11-01-2011, 03:24 AM

ok gonna look around for a tork tek. I have no plate twin turbos mack plug 330 injectors maxed out afc and 18 degree timing and 4k kit coming soon along with 191 dvs. Is that enough to drop it lol?

illflem · 11-01-2011, 01:27 PM

I would never replace metal lines with metal lines.
If you use USCG fire rated diesel hose from the engine to tank it will easily last the life of the truck.
The wall thickness is about 1/2"

DC9612V · 11-01-2011, 05:02 PM

Were can you acquire this Rubber Jesus hose you speak of lol?

jtheado · 11-01-2011, 05:44 PM

Quote:

Originally Posted by 5.9sledhead

ok gonna look around for a tork tek. I have no plate twin turbos mack plug 330 injectors maxed out afc and 18 degree timing and 4k kit coming soon along with 191 dvs. Is that enough to drop it lol?

With all that I'd imagine you need a fass pump depending on the size of injectors and turbos used

illflem · 11-01-2011, 07:27 PM

Quote:

Originally Posted by DC9612V

Were can you acquire this Rubber Jesus hose you speak of lol?

I use Trident Barrier Lined A1-15 hose.
Google it for many sources.

DC9612V · 11-01-2011, 09:30 PM

Im totally buyin some. What size tube did you get? How did you keep it up?