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Old 10-02-2011, 12:30 PM   #1
Topless82
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How to remove the bladder in the fuel tank

This is the only picture of a bladder I could find. I have read some articles where it says it just pulls out. What do you guys use a crane to remove it? ??????

I've read the bladder tank was used on 75-82 cars and I am telling you whatever the hell this bladder is made of it is extremely strong because it would take an act of god to get mine to move a millionth of an inch it is that strong.

If it were removed just how would I reattach the fuel pump sending unit since it appears its retaining bolts thread into the bladder ring which is about 1/4 inch thick.

here is a picture of a rubber bladder I found



Here is that 1/4 inch ring my sending unit attaches to, so how would I reattach the sending unit if the bladder is pulled?

others have said this could be after market tank and that is not a bladder inside but something else.

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Old 10-02-2011, 12:58 PM   #2
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Now I can understand how you could remove a bladder with this larger hole ... But if you notice on mine that black ring is larger then the metal tank hole itself so that is a challenge in itself. Now then if it can be removed the skin of this fuel tank is paper thin and I am wondering if it's even safe to drive the car without it's bladder.

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Old 10-02-2011, 02:39 PM   #3
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This should help you out. http://www.corvettepartsblog.com/vet...ette-gas-tank/
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77 dark red/ buckskin
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Old 10-02-2011, 04:40 PM   #4
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Quote:
Originally Posted by chuck View Post
So this tank is actually a plastic inner tank with a metal skin ???
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Old 10-02-2011, 04:48 PM   #5
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That is the way I read it. It should be plastic and not rubber.
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77 dark red/ buckskin
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Old 10-07-2011, 07:54 AM   #6
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U cannot just pull the bladder and run the naked tank-it was never intended to be used that way and would certainly leak at some point.
I have a '78 gas tank with an intact bladder. I's in great condition if you are interested and if it fits you 82 (i'm not sure) shoot me a pm-I will sell for a great price and I honestly need the room
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Old 10-07-2011, 03:42 PM   #7
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My original tank started leaking after I took it out to flush it. I ended up finding a nice used tank from an 80 or 81 as a replacement.

Once out, I tried removing the bladder and it was a no go. The bladder just disintegrated. I don't see how you could get it out in one piece. As for the purpose of the bladder, my understanding is it is for safety in the event of a rear end collision. Fiberglass and gas don't go well together.

I've read on another Vette website of guys removing the bladder and using the tank without it. They say they got another gallon or two of gas in the tank without it. Also stated the steel tank held liquid fine.
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I'm taking care of my procrastination issues, just you wait and see.
Old 10-07-2011, 06:41 PM   #8
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fwiw, the stock replacement tank I bought from MidAmericaMotorworks has no bladder.
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Old 10-07-2011, 10:38 PM   #9
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Topless82
You are confusing different types of bladders.
The 75-77 bladders were pliable rubber and can easily be taken out and the tank used without the bladder. The neck gasket must be cut off and reused.
The 78-82 had a hard bladder molded into the tank and cannot be removed.
All or the aftermarket tanks for any year have no bladder.
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Old 10-08-2011, 09:30 AM   #10
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My 1977 had the rubber bladder that was indeed removable.

My tank is in great shape with no rust or corrosion so I cleaned it out after I removed the bladder and sealed everything up using the naked tank.

I did indeed gain what I believe to be at least a full gallon of capacity. My bladder had collapsed so my pre-project capacity was diminished of sorts, but based on the listed capacity and what it takes to fill it now I have an extra gallon.

I've had the naked tank in for close to 7 years now, and it doesn't leak at all. No rust or corrosion or seeps.
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Old 05-25-2012, 08:03 PM   #11
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77 tank bladder

The bladder in my 77 tank has imploded. Has anyone ever tried to open the tank up and push the baldder back into place with success OR does it have to be removed?
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