C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Sumping fuel tank

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Old Feb 23, 2004 | 07:28 PM
  #1  
JordonMusser's Avatar
JordonMusser
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From: Coppell TX
Default Sumping fuel tank

Does the C4('94) have a bladder or anything that would prevent me from welding a pick up in the bottom of the tank?
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Old Feb 23, 2004 | 07:37 PM
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From: Lakeland fl
Default Re: Sumping fuel tank (JordonMusser)

I never took the pump out of my vette, but my 97 Tahoe has the pump mounted in a plastic "tube" about 6" diameter and 8-10" tall. Its spring loaded against the bottom of the tank. I guess in the Tahoe that is the sump.

On a side note- I have sumped many gas tanks. Used ones. They say dont weld to a used tank but as long as you empty it completely and let it air out, then rinse with water it works fine. Sometimes I leave some water in it when I weld to displace the fumes in the tank. I have never had a problem.
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Old Feb 23, 2004 | 07:40 PM
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Default Re: Sumping fuel tank (SBNova)

yea, when i welded up my camaro tank I not only washed it really well, I filled it most of the way up with water to make sure there wasnt very much volume to contain vapors.
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Old Feb 24, 2004 | 09:52 AM
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From: Bergen County NJ
Default Re: Sumping fuel tank (JordonMusser)

My '94's gas tank has a plastic bladder/liner on the inside. I gon't believe that the gasoline comes in contact with the metal at all. You would have to penetrate the liner and then seal around the pickup tube.
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Old Feb 24, 2004 | 10:33 AM
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Default Re: Sumping fuel tank (sraft)

Check out these pics:
http://forums.corvetteforum.com/zerothread?id=758863

Looks like zelement would know.
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