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Old 06-29-2006, 12:00 PM
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Gas tank sump legality question

I was just wondering if anyone knew if it was legal to run a sumped gas tank and a street car in Illinois?

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Old 06-29-2006, 08:30 PM
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FEDERAL LAW prohibits such a tank if the outlets are not at the top. If the lines are broken off the tank it can not empty its contents.
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Old 06-29-2006, 09:54 PM
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damn
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Old 06-30-2006, 10:59 AM
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Quote:
Originally Posted by BOBCRMAN@aol.com
FEDERAL LAW prohibits such a tank if the outlets are not at the top. If the lines are broken off the tank it can not empty its contents.

Hey Bob,

Is there any website that provides that information?

We all know there are thousands of cars licensed and driving that have bottom sumps and outlets.

thanks
x
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Old 07-05-2006, 04:13 PM
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i am in NY and i would think that it would be stricter laws here but i have never had a problem with my 81 camaro. i have a rci plastic fuel cell in it and i have driven it to the track many times without problem.
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Old 07-05-2006, 04:54 PM
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what does it mean to have a sumped gas tank? both my cars, a '67 Ford Falcon and a '51 Chevy both have the fuel line running from the bottom corner.
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Old 07-05-2006, 05:21 PM
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my cell has a builtin sump and has two lines in the center of the bottem of the tank
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Old 07-05-2006, 05:36 PM
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It is a BAD IDEA ... IMHO ...
and just because it is against the law, does not mean LOTS of folks have not done it and gotten away with it ...

Even 1932 Fords ... took the fuel from the top of the tank ... from the factory. PLUS ... a bottom feed tank gets ALL THE TRASH ... Where a top feed tank does not ...
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Old 07-05-2006, 06:36 PM
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Deuce is right! And on another thread someone said the return line should go to the bottom to eleminate any static electricty problems with fuel running in the top....Well all of the return lines that I have seen on top have a down tube to the bottom of the tank same as the fuel outlet does, so that takes care of that problem.
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Old 07-05-2006, 06:49 PM
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My understanding of the return line going to the bottom was to prevent aeration of the fuel and premature "running out of gas". I have a return line dumping into the filler neck on both of my EFI rods and that appears to be what is happening. Both have symptoms of running out of gas when there is 2 gal left in the tank. I can slow to about 20 mph and limp to the gas station and it holds about 2 gallons short of the tank capacity. Runs great until I slip up again.

Trees
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Old 07-05-2006, 07:21 PM
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Quote:
Originally Posted by trees
My understanding of the return line going to the bottom was to prevent aeration of the fuel and premature "running out of gas". I have a return line dumping into the filler neck on both of my EFI rods and that appears to be what is happening. Both have symptoms of running out of gas when there is 2 gal left in the tank. I can slow to about 20 mph and limp to the gas station and it holds about 2 gallons short of the tank capacity. Runs great until I slip up again.

Trees

I have one Falcon/Fairlane with the return line into the bottom corner drain fitting and one into the filler neck and have had no problems like that, (Ford 5.0 fuelies).

The only problem I do have is on a maximum launch with less than 1/2 tank the stock pickup will suck air for 2 seconds until the engine balks from lack of fuel. Need tank baffles.

Ford big cars, Crown Vic, Marquis, Town Car do not have the lines at the top of the tank but 1/2 way down on the front side (edgewise tank behind rear axle) and have for many years. Can not be a federal law for lines to be at the top. The return line goes all the way to the bottom next to the fuel pump.
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Old 07-05-2006, 07:33 PM
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Quote:
Originally Posted by xntrik
Ford big cars, Crown Vic, Marquis, Town Car do not have the lines at the top of the tank but 1/2 way down on the front side (edgewise tank behind rear axle) and have for many years. Can not be a federal law for lines to be at the top.
Thats still not at the bottom of the tank, and nothing can hit the lines because they are protected somewhat by the rear axle.
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Old 07-06-2006, 01:09 PM
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Quote:
Originally Posted by Henry Highrise
Thats still not at the bottom of the tank, and nothing can hit the lines because they are protected somewhat by the rear axle.
There is 6 gallons of fuel above the line/fuel pump opening. I just had to put a pump in one last Thursday that had a full tank. No don't have to pull the tank.
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