Posted By: dodgeram1998
fuel return line install - 08/13/14 12:40 AM
I see most fuel cell installs are installed with the return on top of the cell .
Manufacturers install recommendation or rule book compliance.
Posted By: Jamie McGrath
Re: fuel return line install - 08/13/14 12:58 AM
I think its done too keep the fuel cooler and make more powder.......
Posted By: Adobedude
Re: fuel return line install - 08/13/14 12:59 AM
Necessity.
You want the fuel to pour into the fuel cell without adding pressure to the return line.
Posted By: Bigcube
Re: fuel return line install - 08/13/14 01:28 AM
I have a piece of tubing inside the cell so the return is below the surface of the fuel. Keeps it from causing bubbles that could be pulled into the fuel pump.
Posted By: Thumperdart
Re: fuel return line install - 08/13/14 02:00 AM
I use foam w/good results so far.............Then it`s tubes to the bottom of the cell.
Posted By: Bigcube
Re: fuel return line install - 08/13/14 02:03 AM
Notch or cut a hole in the foam for the tube, then run the tube about 2-3" from the bottom.
![](/ubbthreads/images/graemlins/thumbs.gif)
Unless you are on E it will be fine
Posted By: Adobedude
Re: fuel return line install - 08/13/14 02:20 AM
I'd be curious to see how that works, maybe it's time for a Mr. Wizard test.
A hose, a glass of water and cell phone...Oops sorry.
Posted By: Crizila
Re: fuel return line install - 08/13/14 05:53 AM
If you are running foam in the tank, you don't need to run a tube in to it ( or below the fuel level in the tank ) to eliminate fuel airation. More important is NO back pressure. Try not to run a 90* fitting in to the tank. The fuel traveling through the foam ( plus the prefilter )will insure a solid stream to the pump.
Posted By: Adobedude
Re: fuel return line install - 08/13/14 01:36 PM
I have foam in my cell and the only sharp 90 I have is the line that goes to my fuel pressure gauge.
Posted By: pittsburghracer
Re: fuel return line install - 08/13/14 02:11 PM
I threaded a fitting and did this on my Duster.
Posted By: Adobedude
Re: fuel return line install - 08/13/14 04:49 PM
Won't submerging the return line into the gas already in the tank increase the return line pressure?
I know it makes a big difference on my water tanks at the job site, I have to keep the hose out of the water in the tank I'm filling or the flow really slows down.
Posted By: pittsburghracer
Re: fuel return line install - 08/13/14 07:47 PM
I removed my foam years ago because of the alcohol in pump gas with zero issues. These are the instruction that came with my BG400 pump.
Bypass
The return line should be fed with a single #8 or
1/2" line. Plumbing kit number 150187 is avail-
able for this application. The return should expel
the bypassed fuel into the liquid rather than into
the air space of the fuel cell. This will prevent
aeration of the fuel. All fuel tanks and cells
should have fuel cell foam installed to prevent
fuel slosh.
WARNING: DO NOT BLOCK THE RE-
TURN, VENT, OR PUMP FEED. MAKE
SURE THAT THE SYSTEM IS LEAK FREE
AT ALL CONNECTIONS...YOUR SAFETY
DEPENDS ON IT!
Wiring
BEFORE MAKING ELECTRICAL CON-
NECTIONS, DISCONNECT THE POSITIVE
TERMINAL FROM THE BATTERY.
Your BG400 Fuel system should be connected to
a fully charged 12 or 16 volt battery. A fuel
pump, like any other electrical accessory, will
only perform at its best when given adequate
voltage. The black wire is a ground (-) and the
remaining wire is a switched hot lead from a 12 or
16 volt source. If wired incorrectly, the pump wi
Posted By: OUTLAWD
Re: fuel return line install - 08/13/14 09:14 PM
FWIW Aeromotive's Fuel cell w/ the in-tank A1000 pump...returned below fuel level. I will be borrowing this idea with the cell I am building this winter for the car.