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75 Gas Tank

Forum: C3 HVAC, Fuel, Emissions, and Exhaust

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75 Gas Tank

Posted: 12/12/02 10:23pmMessage 1 of 2
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Joined: 12/6/2002
Posts: 1
Does anyone know why the 75 gas tank has lining inside? It's made of rubber too I think. Doesn't the lining reduce the volume of the tank? Could this be part of the problem I'm having with my gas guage, i.e., not reading the right amount?

Thanks for any info.


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75 Gas Tank

Posted: 12/13/02 2:11pmMessage 2 of 2
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Pennsville, NJ - USA
Joined: 3/13/2002
Posts: 532
Vette(s): 1977 EX-L48
The rubber lining is called a bladder and is for safety purposes. In case of a rear end accident it is supposed to keep the gasoline from leaking out very fast and creating a fire. I think 75 had the first bladder, and in 78 they made a better one out of high density poly-ethylene.
1977 Corvette EX-L48
383 Stroker, Holley MPFI, MSD Ignition, BTO 700R4, VBP Street/Slalom, Hooker Sidepipes with JCL Spiral Baffles, Corbeau A4s w/ Shark Bar and Simpson 5-Points, 17" AR TTII's, Kumho MX's

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