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#1
03-23-2012, 05:14 PM
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Automobile gas tank cleaning, been sitting since 96
I'm bringing a 1984 BMW 318i back to life after sitting behind a barn since 1996. Got everything sorted for the most part but I'm going to need to drop the gas tank and clean it. Anyone have any good ideas on the best way to do it?
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Jim 
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#2
03-23-2012, 05:43 PM
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Pressure washer, maybe carwash. If it is rusty you can chem treat it or use electrolysis. Rust belt outlets sell some cheap tanks but probably not that one.
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#3
03-23-2012, 10:02 PM
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Quote:
Baffles can be a pain though. Have used steam on large tanks prior to welding. If you get the tank hot, it dries out properly.
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Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort....  1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles  1987 250td 160k miles English import  2001 jeep turbo diesel 130k miles  1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving
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#4
03-24-2012, 12:49 AM
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When I was in Madison, you could take your radiators (assuming they were mental and not plastic ends) and gas tanks to a shop and they would boil them clean and pressure test them. Do you have such a facility?
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01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow
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#5
03-24-2012, 03:55 AM
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Is it metal or plastic?
-J
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket  Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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#7
03-24-2012, 10:39 AM
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If you think about it later on in this project. Come back and post how it went in general. I have seen several deals on BMWs lately that caught my attention. Wondering about the ups and downs of playing with an older one?
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#8
03-24-2012, 11:32 AM
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This would be a fun, neat little car to own and I could see myself owning a four door like it.
Took two hours to drop the tank. The driveshaft does have to come out for this operation. What I'm getting in to is "while I'm in thereitis". Now it looks like the carrier bearing on the driveshaft is going to need to be replaced. Easy, straight forward car to repair. It is only showing ~127k miles but the speedo/odo does not work.
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Jim
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#9
03-24-2012, 12:57 PM
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gas tanks can be cleaned very easily with a torch...
depending on it's condition, I would be real tempted to replace
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On some nights I still believe that a car with the fuel gauge on empty can run about fifty more miles if you have the right music very loud on the radio. - HST 1983 300SD - 305000 1984 Toyota Landcruiser - 190000 1994 GMC Jimmy - 203000  https://media.giphy.com/media/X3nnss8PAj5aU/giphy.gif
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#11
03-26-2012, 06:24 PM
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I realize you cars gas tank is a bit larger than what this was intended for, but.......
I know a few who've had good results with this product. How to Remove Rust from a Motorcycle Gas Tank (De-Rust) - YouTube
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Mike Murrell 1991 300-SEL - Model 126 M103 - SOHC "Fräulein"
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