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fuel return line install #1658294
08/12/14 08:40 PM
08/12/14 08:40 PM
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illinois
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dodgeram1998 Offline OP
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illinois
I see most fuel cell installs are installed with the return on top of the cell .
Manufacturers install recommendation or rule book compliance.

Re: fuel return line install [Re: dodgeram1998] #1658295
08/12/14 08:58 PM
08/12/14 08:58 PM
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Oregon
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Jamie McGrath Offline
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Oregon
I think its done too keep the fuel cooler and make more powder.......

Re: fuel return line install [Re: dodgeram1998] #1658296
08/12/14 08:59 PM
08/12/14 08:59 PM
Joined: May 2006
Posts: 1,260
New Mexico
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Adobedude Offline
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Necessity.

You want the fuel to pour into the fuel cell without adding pressure to the return line.

Last edited by Adobedude; 08/12/14 09:01 PM.

2001 Dodge Dakota
408 All Motor
11.27 @ 117.83 mph
2017 NM Mopar Challenge Series Champion.
Re: fuel return line install [Re: Adobedude] #1658297
08/12/14 09:28 PM
08/12/14 09:28 PM
Joined: Nov 2003
Posts: 10,384
Upstate NY
Bigcube Offline
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Upstate NY
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.


Jim

Re: fuel return line install [Re: Adobedude] #1658298
08/12/14 09:30 PM
08/12/14 09:30 PM
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Posts: 19,318
State of confusion
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Thumperdart Offline
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Quote:

Necessity.

You want the fuel to pour into the fuel cell without adding pressure to the return line.





This............I didn`t but will ad an extension tube to the cell and run it down into the foam to help stop aeration and foaming.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: fuel return line install [Re: Thumperdart] #1658299
08/12/14 09:34 PM
08/12/14 09:34 PM
Joined: Nov 2003
Posts: 10,384
Upstate NY
Bigcube Offline
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Upstate NY
Quote:

Quote:

Necessity.

You want the fuel to pour into the fuel cell without adding pressure to the return line.





This............I didn`t but will ad an extension tube to the cell and run it down into the foam to help stop aeration and foaming.



I ditched the foam years ago. I have a tube on the returns. I two returns, have one from the pump and one from the regulators.

Re: fuel return line install [Re: Bigcube] #1658300
08/12/14 10:00 PM
08/12/14 10:00 PM
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State of confusion
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Thumperdart Offline
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I use foam w/good results so far.............Then it`s tubes to the bottom of the cell.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: fuel return line install [Re: Thumperdart] #1658301
08/12/14 10:03 PM
08/12/14 10:03 PM
Joined: Nov 2003
Posts: 10,384
Upstate NY
Bigcube Offline
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Upstate NY
Notch or cut a hole in the foam for the tube, then run the tube about 2-3" from the bottom. Unless you are on E it will be fine

Re: fuel return line install [Re: Bigcube] #1658302
08/12/14 10:20 PM
08/12/14 10:20 PM
Joined: May 2006
Posts: 1,260
New Mexico
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Adobedude Offline
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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.


2001 Dodge Dakota
408 All Motor
11.27 @ 117.83 mph
2017 NM Mopar Challenge Series Champion.
Re: fuel return line install [Re: Adobedude] #1658303
08/13/14 01:53 AM
08/13/14 01:53 AM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
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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.


Fastest 300
Re: fuel return line install [Re: Crizila] #1658304
08/13/14 09:36 AM
08/13/14 09:36 AM
Joined: May 2006
Posts: 1,260
New Mexico
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Adobedude Offline
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Adobedude  Offline
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I have foam in my cell and the only sharp 90 I have is the line that goes to my fuel pressure gauge.


2001 Dodge Dakota
408 All Motor
11.27 @ 117.83 mph
2017 NM Mopar Challenge Series Champion.
Re: fuel return line install [Re: Adobedude] #1658305
08/13/14 10:11 AM
08/13/14 10:11 AM
Joined: Feb 2005
Posts: 20,185
PA.
pittsburghracer Offline
"Little"John
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I threaded a fitting and did this on my Duster.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: fuel return line install [Re: pittsburghracer] #1658306
08/13/14 10:12 AM
08/13/14 10:12 AM
Joined: Feb 2005
Posts: 20,185
PA.
pittsburghracer Offline
"Little"John
pittsburghracer  Offline
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2.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: fuel return line install [Re: pittsburghracer] #1658307
08/13/14 12:49 PM
08/13/14 12:49 PM
Joined: May 2006
Posts: 1,260
New Mexico
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Adobedude Offline
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New Mexico
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.


2001 Dodge Dakota
408 All Motor
11.27 @ 117.83 mph
2017 NM Mopar Challenge Series Champion.
Re: fuel return line install [Re: Adobedude] #1658308
08/13/14 01:19 PM
08/13/14 01:19 PM
Joined: Jun 2003
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Romeo MI
MR_P_BODY Offline
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Quote:

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.




Your talking inches of water back pressure(about 30"
of water to 1 psi)... with the return down in the fuel
it reduces aireation a ton... but if the return is
far enough away or if it has foam there isnt any
problem

Re: fuel return line install [Re: Adobedude] #1658309
08/13/14 01:49 PM
08/13/14 01:49 PM
Joined: Jul 2004
Posts: 19,318
State of confusion
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Thumperdart Offline
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Thumperdart  Offline
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State of confusion
Quote:

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.




Wondered the same thing but my pump is pre-set at 27 lbs. iirc and others I know use a tube w/out any issues. I don`t normally run a full cell(12 gallons)cos of the added weight although it helped before my suspension mods came around and now that it hooks pretty good I figured w/less fuel in the cell the tube would help...........or not.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: fuel return line install [Re: Thumperdart] #1658310
08/13/14 03:47 PM
08/13/14 03:47 PM
Joined: Feb 2005
Posts: 20,185
PA.
pittsburghracer Offline
"Little"John
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PA.
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


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: fuel return line install [Re: pittsburghracer] #1658311
08/13/14 04:34 PM
08/13/14 04:34 PM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
master
Crizila  Offline
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Posts: 7,506
Az
Quote:

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


Interesting? They don't tell you how long this line in to the fuel should be. Why not just plumb the return line in to the bottom of the tank if you are that concerned about fuel aeration?? That would cover all scenario's. JMO, but I aint buyin it.


Fastest 300
Re: fuel return line install [Re: Crizila] #1658312
08/13/14 04:44 PM
08/13/14 04:44 PM
Joined: Feb 2005
Posts: 20,185
PA.
pittsburghracer Offline
"Little"John
pittsburghracer  Offline
"Little"John

Joined: Feb 2005
Posts: 20,185
PA.
Quote:

Quote:

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


Interesting? They don't tell you how long this line in to the fuel should be. Why not just plumb the return line in to the bottom of the tank if you are that concerned about fuel aeration?? That would cover all scenario's. JMO, but I aint buyin it.





I think the reason they want it up high is to prevent any chance of suction. Kinda like priming a pump.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: fuel return line install [Re: pittsburghracer] #1658313
08/13/14 04:45 PM
08/13/14 04:45 PM
Joined: Jun 2003
Posts: 9,225
Charleston
S
sixpackgut Offline
Drag Week Mod Champion
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S

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Posts: 9,225
Charleston
Quote:

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




I know sometimes I'm a bit out in left field, but I have thought about this before. like in a fish tank where water flows out of the filter and dumps into the water, its adding oxygen to the water, is it possible that when fuel is dumping into a fuel cell, is it adding oxygen to the fuel similar to some race fuels that are oxygenated


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