Rust in tank
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Joined: Dec 2009
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From: Macomb Michigan
Rust in tank
I am working on a 75' that has not been started in the last 7 years. The engine runs from an external fuel source. I used the fuel pump to get the old fuel old and used some sea foam to loosen the old crud in the tank and lines. I got it to a point were I get a gravity flow before the fuel pump. Now put some fresh fuel in but I get a lot of rust setiment from time to time. Thinking about droping the tank to clean it out. How should I clean it. Anybody done this? Thanks.
3rd Gear
Joined: Nov 2010
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From: Dayton Ohio
Hey Bucks, KBS makes a fuel tank rust removal/sealer kit. I have used it and it works fine. It is a three stage procedure. The kit cost around $70. You can decide if it is worth it. Good luck.
peace Bud
peace Bud
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From: New Hill NC
I am working on a 75' that has not been started in the last 7 years. The engine runs from an external fuel source. I used the fuel pump to get the old fuel old and used some sea foam to loosen the old crud in the tank and lines. I got it to a point were I get a gravity flow before the fuel pump. Now put some fresh fuel in but I get a lot of rust setiment from time to time. Thinking about droping the tank to clean it out. How should I clean it. Anybody done this? Thanks.
I don't remember if `75 had the bladder, but it might be possible to get it clean enough. I would probably just change it no more cost than they are.
On old cars that you cant get a new one, there are methods. I uses rocks, a concrete mixer, some kerosene. I place the kerosene and rocks inside and tumble them to clean the inside. Drain and wash out with lacquer thinner, and coat the inside with epoxy primer or the commercial tank sealers.
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From: Panhandle
1975 Gas Tank
Here are some photos
http://picasaweb.google.com/JupiterT...eat=directlink
My 75 sat for over 10 years with gas in it. Best solution is to drop the tank. Once the old fuel was taken to recycle station, I took out the bladder and cleaned it up. Surprisingly, it was in good shape. Had to get a new sending unit.
Another thing to consider: If the fuel or vent line is rusty, you may be pushing rust into carb or back into the tank.
The bladder is there because the Vette had to pass a rear collision requirement. Needless to say, the fuel kept leaking until they stuck in the bladder. So bladder is good!
http://picasaweb.google.com/JupiterT...eat=directlink
My 75 sat for over 10 years with gas in it. Best solution is to drop the tank. Once the old fuel was taken to recycle station, I took out the bladder and cleaned it up. Surprisingly, it was in good shape. Had to get a new sending unit.
Another thing to consider: If the fuel or vent line is rusty, you may be pushing rust into carb or back into the tank.
The bladder is there because the Vette had to pass a rear collision requirement. Needless to say, the fuel kept leaking until they stuck in the bladder. So bladder is good!
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Joined: Dec 2009
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From: Macomb Michigan
what did you use to clean the bladder ?
Thanks
Thanks
Here are some photos
http://picasaweb.google.com/JupiterT...eat=directlink
My 75 sat for over 10 years with gas in it. Best solution is to drop the tank. Once the old fuel was taken to recycle station, I took out the bladder and cleaned it up. Surprisingly, it was in good shape. Had to get a new sending unit.
Another thing to consider: If the fuel or vent line is rusty, you may be pushing rust into carb or back into the tank.
The bladder is there because the Vette had to pass a rear collision requirement. Needless to say, the fuel kept leaking until they stuck in the bladder. So bladder is good!
http://picasaweb.google.com/JupiterT...eat=directlink
My 75 sat for over 10 years with gas in it. Best solution is to drop the tank. Once the old fuel was taken to recycle station, I took out the bladder and cleaned it up. Surprisingly, it was in good shape. Had to get a new sending unit.
Another thing to consider: If the fuel or vent line is rusty, you may be pushing rust into carb or back into the tank.
The bladder is there because the Vette had to pass a rear collision requirement. Needless to say, the fuel kept leaking until they stuck in the bladder. So bladder is good!
Pro
Joined: Jan 2010
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From: Panhandle
Dawn Soap
I used Dawn Soap. It worked very well for me.
I figured, if they used Dawn Soap on the birds that got fouled with oil in the Gulf, that it would work well on the Vette's Bladder.
In the past I also used my wife's laundry soap to clean out a TR6 Gas tank.
You could also use Marine Clean from the POR Folks, but its pretty pricey compared to Dawn.
Scott Marzhal: You beat me-- but we agree!!! How bout that!!!
I figured, if they used Dawn Soap on the birds that got fouled with oil in the Gulf, that it would work well on the Vette's Bladder.
In the past I also used my wife's laundry soap to clean out a TR6 Gas tank.
You could also use Marine Clean from the POR Folks, but its pretty pricey compared to Dawn.
Scott Marzhal: You beat me-- but we agree!!! How bout that!!!
...
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From: Kanuckistan
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Works well on grease, not sure on gas.
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From: Macomb Michigan
I will probably drop the tank today and get to it. Thinking about blowing the fuel and vapor line out with compressed air once the tank is out and the lines are disconnected at both ends. Has anybody done that ? It would be great not to have to take the lines out.
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From: Raleigh North Carolina
You need dry compressed air. Without a dryer, compressed air is extremely "wet".
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For $200 you can get a brand new tank from Quanta. After removing the old one why not replace it? I know I'm great at spending other people's money but I just wouldn't want the old tank.
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From: Macomb Michigan
The tank itself is in good shape. The bladder is just dirty but not ripped. So I only need to clean it. The sending unit is basically destroyed. The sock filter was laying in the tank because the pipe rusted through. The swimmer for the gas gauge doesn't move either.
Need a new sending unit. Those are around $200 new.