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  1. #1
    Member
    Join Date
    Mar 2004
    Location
    N.Carolina
    Posts
    86
    Corvette(s)
    1979 Black L-82

    Default Gas tank fuel bladder

    What is the purpose of the Gas tank fuel bladder ? The gas tank on my '79 vette just started leaking . All the after market gas tanks I have found say that they come with out the bladder. How important is it to have this and if so where might I find one?
    Thanks,
    Chiller

  2. #2
    Member mkapp7879's Avatar
    Join Date
    Feb 2004
    Location
    Beecher, Ill.
    Posts
    414
    Corvette(s)
    78 SA,78 Pace,black 79 and white 79, all L82s

    Default

    Having just put one of these liner-less replacement tanks in one of mine I'm curious, too. Tried to repair some minor pinholes but with the liner in it you really can't do much with it.
    My ASSUMPTION is it's a safety thing.
    But I figure a tank without a liner is safer than a tank with a leak!

  3. #3

    Join Date
    Jan 2002
    Location
    Washington, Michigan
    Posts
    7,280
    Corvette(s)
    '67 Marina Blue Convertible

    Default

    The bladder was introduced as a safety measure to be more effective in containing fuel in a rear-impact collision. The bladder was inserted in the tank before the two halves of the tank were seam-welded together, and none of the restoration sources have tooled up to mold the bladder, probably due to tooling costs.


  4. #4
    Member
    Join Date
    Mar 2004
    Location
    N.Carolina
    Posts
    86
    Corvette(s)
    1979 Black L-82

    Default

    So the aftermarket tanks are okay without the bladder ?

  5. #5

    Join Date
    Jan 2002
    Location
    Washington, Michigan
    Posts
    7,280
    Corvette(s)
    '67 Marina Blue Convertible

    Default

    Quote Originally Posted by Chiller View Post
    So the aftermarket tanks are okay without the bladder ?
    Functionally, they'll work fine, but won't provide the same level of rear-impact protection as the original; the design without the bladder was used for 13 years prior to the bladder's introduction.


  6. #6
    Member Art Jett's Avatar
    Join Date
    Mar 2004
    Location
    Azle Tx.
    Posts
    371
    Corvette(s)
    1977 TPI 383 stroker, 700R-4/ 2002 6 spd.

    Default

    If a tank for a '77 will fit, I have a brand new one still in the box with the reciept from Ecklers. All you would need is the top piece from your old bladder to make a gasket for the fill plate that bolts to the top of the tank. I'd let it go for $150.00 + shipping. I thought my bladder was collapsed, but the tank sender float arm was bent.Art


    Never mind! I looked in the catalog and it isn't the same. Damn,I'd like to get rid of it.

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