Two Fuel Tanks
#1
thats not paint....
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Two Fuel Tanks
Has anyone heard about running dual fuel tanks? The main tank would be pump gas then a smaller fuel cell would be race/high octane gas. They could both run into one of the fuel transfer switches with a external fuel pump after that. This would let you run with one pump which could suck from either thank.
Thanks,
Chris
Thanks,
Chris
#2
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How would you do a return line? Would you switch that too? Returnless fuel system maby?
Sounds like an easy way to complicate an uncomplicated problem. I wouldnt trust a system like that because how would u know when the low(er) octane fuel is out of the lines and cleared the injectors?
Sounds like an easy way to complicate an uncomplicated problem. I wouldnt trust a system like that because how would u know when the low(er) octane fuel is out of the lines and cleared the injectors?
#3
thats not paint....
Thread Starter
Return line would be setup the same. That is true it would make it complicated... maybe too complicated. If you were to drain your tank and put higher octane in it would probably take just as long to burn off the excess fuel in the lines.
#7
Rotary Enthusiast
go look at alot of older(80's)fords in junk yards. alot of those had dual gas tanks at the flip of a switch form within the interior. one of my friends late 80s econoline vans had a 18 and 22 gallon tank under it that all you had to do was flip a switch to go from empty to full.
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#8
thats not paint....
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Originally posted by $150FC
I'm not real knowledgeable on this, but i'll ask anyway: could one use a fuel tank/fuel cell combo?
I'm not real knowledgeable on this, but i'll ask anyway: could one use a fuel tank/fuel cell combo?
Crusader, pretty much what I was thinking of.... but the fords (I think) use two pumps then go to the switch. I would be using an external pump after the switch... I wonder if that would put too much suction on the switch causing it to be unreliable.
#10
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Kevin T. Wyum ran this type setup in his car. PM him, maybe you can get some info from him. This is what I know......
"Two different tanks. There's a 10 gallon fuel cell in the spare tire area. There's a big SX pump for the race cell and a cosmo in the stock tank. So one switch controls which pump is on with check valves to prevent backflow before a Y junction. Then there's a servo controlled switch that changes the return line route. I have that on a seperate switch so I can purge lines and send fuel back to either tank for whatever reason."
Kevin T. Wyum
Maybe that will help you some
STEPHEN
"Two different tanks. There's a 10 gallon fuel cell in the spare tire area. There's a big SX pump for the race cell and a cosmo in the stock tank. So one switch controls which pump is on with check valves to prevent backflow before a Y junction. Then there's a servo controlled switch that changes the return line route. I have that on a seperate switch so I can purge lines and send fuel back to either tank for whatever reason."
Kevin T. Wyum
Maybe that will help you some
STEPHEN
#11
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Oh, I'm retarded.
My truck has two fuel tanks, a ~16gal and an ~18 gal. There's a switch in the cockpit. I'm pretty sure there are two fuel pumps, because the front one doesn't work now.
Now, it's running 8 injectors and I think the total volume of the injectors is less than, say, my 680/1680 setup, but it takes about two seconds for the fuel to completely switch over from one tank to the other. If you hit the switch and go to the front tank, it will run for two or three seconds and then die (no front FP = no fuel).
edit: Did I just say "cockpit"?
My truck has two fuel tanks, a ~16gal and an ~18 gal. There's a switch in the cockpit. I'm pretty sure there are two fuel pumps, because the front one doesn't work now.
Now, it's running 8 injectors and I think the total volume of the injectors is less than, say, my 680/1680 setup, but it takes about two seconds for the fuel to completely switch over from one tank to the other. If you hit the switch and go to the front tank, it will run for two or three seconds and then die (no front FP = no fuel).
edit: Did I just say "cockpit"?
Last edited by $150FC; 03-16-04 at 02:02 PM.
#12
Super Newbie
Originally posted by $150FC
Oh, I'm retarded.
My truck has two fuel tanks, a ~16gal and an ~18 gal. There's a switch in the cockpit. I'm pretty sure there are two fuel pumps, because the front one doesn't work now.
Now, it's running 8 injectors and I think the total volume of the injectors is less than, say, my 680/1680 setup, but it takes about two seconds for the fuel to completely switch over from one tank to the other. If you hit the switch and go to the front tank, it will run for two or three seconds and then die (no front FP = no fuel).
edit: Did I just say "cockpit"?
Oh, I'm retarded.
My truck has two fuel tanks, a ~16gal and an ~18 gal. There's a switch in the cockpit. I'm pretty sure there are two fuel pumps, because the front one doesn't work now.
Now, it's running 8 injectors and I think the total volume of the injectors is less than, say, my 680/1680 setup, but it takes about two seconds for the fuel to completely switch over from one tank to the other. If you hit the switch and go to the front tank, it will run for two or three seconds and then die (no front FP = no fuel).
edit: Did I just say "cockpit"?
#13
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really? i couldn't be sure, either way...need to buy a haynes manual and inspect.
but it's got 244k so a fuel pump crapping out at this point is acceptable
but it's got 244k so a fuel pump crapping out at this point is acceptable
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