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Gas Tank cleaning Advice
HI,
I am in the process of restoring a '70 911E. It has not run for a few years so I want to have the gas tank throughly cleaned. Any advice on the best way of doing this? There is a shop nearby that "dips" parts. I think that they mostly do this to remove paint so I am not sure if they dip tanks. Assuming that I get this cleaned out, are there any suggestions about coating the inside of the tank with anything to prevent leakage? How about the external. What is normally used to coat the outside of the tank? thanks for any advise that anyone can give me. tim |
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03-29-2010, 09:59 AM
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Join Date: Dec 2001
Location: Cambridge, MA
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Tim, there are some products you can use from POR15 and KBS.
After I got my barnfind 73 on the road (sat for 10 years), I found out quickly that the entire fuel system needed to be redone. After getting everything new, I opted to take the tank to an industrial radiator and oil cooler repair shop. They dipped the tank and then coated the inside with an epoxy of some type and then roughly painted the outside. I haven't had a problem and don't expect to for as long as I own the car. cost was $250, probably cheaper down in PA. good piece of mind, especially since I can 100% rule out the fuel delivery system when troubleshooting any kind of rough running/tuning.
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Tru6 Restoration & Design |
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03-29-2010, 10:12 AM
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Location: Lander, WY
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My 71T sat for 15+ years before I bought it. After replacing all of the fuel lines I cleaned the inside of the tank by simply doing a few cycles of sloshing/stewing overnight using metal prep phosphoric acid (like POR-15 Metal Ready). It does a good job of dissolving the rust. You want to get gas back in the tank within a day or so to reduce flash rusting, so make this your last step if you are also refinishing the outside. Of course, if you have leaks you will need to use resealers as others have recommended. I would not view the dipping process an option, considering what you will put into the dipping and refinishing costs you can buy a brand new galvanized replacement reproduction tank for $510.
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Doug 71 911T |
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03-29-2010, 12:50 PM
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I have used Marine Clean from POR 15 to clean gas tanks.
They often come out so clean that I don't bother to coat them. Stuff is amazing, and it works better than any solvent you can name, and I have tried a lot of them. |
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03-29-2010, 05:51 PM
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Location: South of the Mason-Dixon Line
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On your tank (non-CIS) your does not have the baffling that many say are plastic and subject to destruction or impact by cleaning solvents. Although I have the 73.5T CIS tank, I did take it to a radiator shop where it was dipped in the same cleaning solutions (caustics) used to clean radiators. It came out fine with no known or obvious impact to the baffles.
The shop recommended internal coating with REDKOTE, a US Navy specified ship tank liner and sealer. They applied two coats of REDKOTE to the interior. Its as tough if not tougher then POR 15. When I got the tank back, I applied a coat of POR 15 on the exterior followed by two spray on coats of Wirth Gray Coating. The tank looks likes like its factory fresh. The cost from the radiator shop with the REDKOTE was $250.00. I for one researched as you doing the job myself, but it paid off to have the professionals do it and at a reasonable price. The toughest part of the job for me was removing the old exterior rubberized coating. I used paint remover, several scrapers and a hell of a lot of elbow grease. good luck Bob 73.5T |
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03-30-2010, 04:31 AM
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Quote:
Bob, was the REDKOTE, red? The interior of my tank is red.
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03-30-2010, 04:37 AM
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yes indeed.............red!
There is a lengthy thread on tank repair from a year or so ago. Several chimed in regarding the merits of REDKOTE. It was developed for internal coating of tanks onboard Naval ships. You have to use a pick axe to get at it!! I am not certain how the shop applied it, but they were careful enough not to clog any of the lines and cleaned all threads. Since I have had my tank re-done I have had zero issues............... Bob |
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03-30-2010, 05:00 AM
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Bird. It's the word...
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I was pleased with the results using the POR15 fuel tank kit.
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John Forcier Current: 68L 2.0 Hotrod - build underway |
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03-30-2010, 04:38 PM
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Do what I did, remove it and take it to a COMMERCIAL radiator shop, one that does SEMI radiators. Have it dipped, leak tested, repaired and repainted for $55.00.
Commercial Radiator Service Inc Commercial Radiator Service, Inc. - Phoenix, Arizona 2530 West McDowell Road Phoenix, AZ 85009-2907 (602) 233-2066 It is literally new, with a small leak repaired, amazing and so inexpensive. |
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03-30-2010, 04:52 PM
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1969 Porsche 911T 2.7RS Spec with Webbers
