fuel transfer idea

[Scrappy]

I have a 78 gal. tank in the bed of my truck that is set up to gravity feed into the factory tank. I have an electric shutoff for the tank that I use to control the fuel transfer, and I want somthing that is fuel and forget. With that in mind I found these level switches:

http://www.omega.com/ppt/pptsc.asp?ref=LVN60_70&Nav=grek13



I was thinking of mounting one in the top of the factory tank to shut off the Holley Blue(thru a relay) that I have and am thinking of using.

I also plan on mounting a second one on the standpipe in the 78 gal tank to shut the pump off when the tank is empty.



Will this work?

 

[UP N MTNS]

I have a 60 gallon Aux tank that is gravity feed and I just leave the manual valve open(transfering) all the time into the stock tank.

Any reason why you wouldnt just leave the valve always open? I havent had a problem yet,in fact I copyed another TDR members set up and he told me he hasnt had any issues with just leaving the valve open... . Should I not be leaving the valve open all the time?

 

[Cattletrkr]

I occassionally drive a '05 Ford that has a gravity feed system. They installed a check valve somewhere in there and they have had no issues with leakage.



I got stopped for a fuel dip the other day and I asked the guy if gravity systems were OK. He said, "as far as I know they are. We see them all the time. " He went on to suggest calling the DOT because these two guys were with "revenue" even though they were still driving a "commercial vehicle inspection" truck. My thought is, "well, these are the guys who are most likely to catch me running something illegal, so if they think it's legal... "

 

[Scrappy]

I basically don't want to worry about losing anywhere from 78 to 115+ gal. of fuel if something springs a leak.

 

[Labonte18]

Where To Put The Hose From The Aux Tank

Just Wounderin Where You Hook The Line From The Aux Tank In To The Stock Truck Fuel Lines?? In The Filler Neck Or What?? Has Anyone Bought One Of These Tanks And Had Duelly Depot Install It??thanks Again Tdr Later Robert

 

[UP N MTNS]

Just Wounderin Where You Hook The Line From The Aux Tank In To The Stock Truck Fuel Lines?? In The Filler Neck Or What?? Has Anyone Bought One Of These Tanks And Had Duelly Depot Install It??thanks Again Tdr Later Robert

Robert mine tap's into the filler neck,cant help you with your install question as I installed mine myself, pretty easy and straight forward.

 

[Scrappy]

I have mine hooked up the the secondary pickup that is normally capped.

 

[B.G. Smith]

Just Wounderin Where You Hook The Line From The Aux Tank In To The Stock Truck Fuel Lines?? In The Filler Neck Or What?? Has Anyone Bought One Of These Tanks And Had Duelly Depot Install It??thanks Again Tdr Later Robert

I removed the filler neck from the truck(three screws and a couple of hose clamps) and brazed half of a 1/4" pipe coupling to the fuel nozzle and the vent nozzle. Ran the vent back up to the aux. tank. I ran the fuel line from the tank through a filter then a a 12v valve then a 12v pump. I control the valve and pump with a timer switch so if I forget to turn it off, it times out and shuts off. If the tank gets full before the timer shuts off, the fuel just goes back up the vent into the aux. tank. bg

 

[Cummins Pilot]

I basically don't want to worry about losing anywhere from 78 to 115+ gal. of fuel if something springs a leak.

80gals of diesel makes a real nice mess. Haven't had much dust in the driveway last couple of years though.

 

[cojhl2]

and brazed half of a 1/4" pipe coupling to the fuel nozzle and the vent nozzle.

B. G. Smith



That venting to the aux tank is a darn good idea!!! Although that does mean the filler cap on the main tank has to be absolutely leak proof. .



edit: BTW hos do these tanks vent to the outside normally?

 

[B.G. Smith]

and brazed half of a 1/4" pipe coupling to the fuel nozzle and the vent nozzle.

B. G. Smith



That venting to the aux tank is a darn good idea!!! Although that does mean the filler cap on the main tank has to be absolutely leak proof. .



edit: BTW hos do these tanks vent to the outside normally?

I can't speak for all filler caps but I drove a 99 with the same setup for over 120,000 miles with no leaks from the cap. Only have about 9,000 on current truck. The tank on the 06 has two vents(rollover valves), one on either end of tank, they allow air to enter when the fuel is used but have a check valve or something so the fuel does not leak out. My aux. tank also has a vent or rollover valve. bg

 

[GECCO]

OK, stupid question time..... why? As in - why add this much extra capacity? There is no way I could drive from full to empty on a stock tank without having to stop to eat/sleep/s*&t, etc. If you have to stop anyway, why not fill up? In the meantime, you are hauling around 600+ pounds of extra fuel.



I'm not saying there aren't legit reasons, I'm just saying I don't know what they are - so enlighten me, please.

 

[McCRam]

I'm not saying there aren't legit reasons, I'm just saying I don't know what they are - so enlighten me, please.

I have a few reasons. The first is, I can choose where I buy. On my daily travels, I often see price differences up to 20 cents. I can also save quite a bit of time from driving to the pump, 15 minutes one way, (in the wrong direction), for me. The nozzles the big rigs will speed up the refueling process as well. Also it seems that every week I have to make at least one special trip into town just for fuel. For me another 50 gallons or so on board would be great.

 

[steved]

OK, what about us that can't gravity feed?



I want to install a 27-gallon fuel cell in my tool box (out of sight, out of mind) and that will prevent it from gravity feeding. I will be using a FS1251 filter/water separator.



I am considering running a "small" pump to push the fuel to the main tank, I am not as worried about overfilling as I am over pressurizing the main tank... even 3-4 psi on that tank might split it since it is not structurally supported...



Does the main tank vent outward to prevent overpressurizing?? I know the rollover valves are supposed to be one way, but I'm not sure mine are (will need to check again). Or is the fuel cap vented to prevent over pressurizing??



Anyone thought about this before?? I did some searching of recent topics and nothing answered my question...



steved

 

[Joe G.]

I'm not saying there aren't legit reasons, I'm just saying I don't know what they are - so enlighten me, please.

I got tired of planning my trips according to fuel stops. Especially towing. With the 50 gallon tank I can fuel up where fuel is cheaper and when I want. Going across Nevada and having to stop for fuel where I don't want to can be expensive.

 

[cojhl2]

OK, what about us that can't gravity feed?

Does the main tank vent outward to prevent overpressurizing??

steved

I wonder about the same thing. If the tank vent vented outward then the gravity feed would not work as there would be no stopping the fuel from running down from the higher tank.



On the other hand what keeps the tank from building up pressure casued by the fuel warming up??

 

[steved]

I wonder about the same thing. If the tank vent vented outward then the gravity feed would not work as there would be no stopping the fuel from running down from the higher tank.



On the other hand what keeps the tank from building up pressure casued by the fuel warming up??

My concerns exactly... I got to check it out...



steved