Gas Tank Bladder
Safety Car
Joined: Jul 2005
Posts: 3,691
Likes: 833
From: WI
I recall a few years ago this came up and the answer, as I remember, was you 'can' replace the bladder and there link posted for a replacement bladder. I don't recall who that source is, or if they are still around, but maybe a google search?? Or perhaps someone will enlighten us here.
Mark G
Mark G
Last edited by Mark G; Jun 3, 2012 at 12:23 AM.
Melting Slicks
Joined: Apr 2001
Posts: 3,399
Likes: 278
From: Olmsted Falls, Ohio
I have replaced my tank and tossed the bladder on my 75 and here's what I found. Yours may be different.
That said, I think you could get the bladder out without tearing it, it is a heavy rubber like material that is hard to handle. You would first have to get the neck piece out of the opening. The neck piece has the nuts that the sender bolts to. Then start to fold and turn it enough to slowly pull it out.
BUT I think it would be a lot easier to get one in IF it was rolled and folded before inserting in the sender hole.
Anyway, not worth the effort in my opinion. All cars before 75 DID NOT have a bladder and they are just fine. If it was such a big concern, someone would be making tanks with bladders for the 75-76 (77?) cars. I not entirely sure but I think the 78+ cars had a different type of bladder.
That said, I think you could get the bladder out without tearing it, it is a heavy rubber like material that is hard to handle. You would first have to get the neck piece out of the opening. The neck piece has the nuts that the sender bolts to. Then start to fold and turn it enough to slowly pull it out.
BUT I think it would be a lot easier to get one in IF it was rolled and folded before inserting in the sender hole.
Anyway, not worth the effort in my opinion. All cars before 75 DID NOT have a bladder and they are just fine. If it was such a big concern, someone would be making tanks with bladders for the 75-76 (77?) cars. I not entirely sure but I think the 78+ cars had a different type of bladder.
Burning Brakes
Joined: Sep 2006
Posts: 1,071
Likes: 86
From: Rotonda FL
The bladder can be removed and replaced. I removed the one in my 77 intact and with little difficulty (of course you have to drop the tank first!). I wound up cutting out the neck portion, with the retaining nuts, and not using the remainder because it would not work with my in-tank pump and fabbed hanger and sump for my TPI. If you need help or pictures, Pm me.
PS - The original tank was perfect inside. I painted it with POR15 o/s and used a POR15 tank sealer on the i/s to avoid any future problems
PS - The original tank was perfect inside. I painted it with POR15 o/s and used a POR15 tank sealer on the i/s to avoid any future problems
Last edited by Rotonda; Jun 3, 2012 at 11:35 AM. Reason: Added PS
Team Owner
Joined: Aug 2000
Posts: 21,453
Likes: 461
From: Massillon,Ohio USA
2020 C3 of the Year Finalist - Unmodified
Cruise-In VI Veteran
St. Jude Donor '08-'09-'10-'11-'12
....took the bladder out of the '75 I used to own back in 1994 and it's still this way to this day. I wrote several posts back in the day when I had done it. The bladder was collapsing to the point where I could only get 12gals in the tank. As a matter of fact, I ran out of gas one time going to a cruise-in because part of the collapsing held the float up showing I had 1/2 a tank of fuel!!!
...the tank was mint inside and looked new.
...the tank was mint inside and looked new.
Thread Starter
Pro
Joined: Sep 2006
Posts: 547
Likes: 13
From: Carlstadt NJ
....took the bladder out of the '75 I used to own back in 1994 and it's still this way to this day. I wrote several posts back in the day when I had done it. The bladder was collapsing to the point where I could only get 12gals in the tank. As a matter of fact, I ran out of gas one time going to a cruise-in because part of the collapsing held the float up showing I had 1/2 a tank of fuel!!!
...the tank was mint inside and looked new.
...the tank was mint inside and looked new.
Thanks,
Danny
