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Joined: Mar 2006
Posts: 90
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Mar 2006
Posts: 90 |
I'm in the process of reconditioning the original gas tank for my "31" sedan. I patiently removed one end cap, bead blasted the inside and soldered the end cap back into place. To insure no leaks I plan to block the holes, install and air pressure guage and pump some air but I'm not sure how much. It seems there would be little if any pressure when filled under normal operation. I would like to know how much air pressure and how long should it hold the pressure? Also would like to know best exterior finish........primer and paint, some type of asphalt undercoat, por 15 ?? Any recommendations will be appreciated
Thanks
Any recommendations or suggestions
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
I would use a different procedure to prepare the tank for use. I would use one of the current tank sealers and slosh it around good, remove excess, and leave it open for several days until it cures. I don't know about the external finish on the tank, but I would venture to say it was natural. If you were to use air on the tank I would not exceed 5-10 pounds at the most.  
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Mar 2006
Posts: 90
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Mar 2006
Posts: 90 |
I've heard nightmares about the coatings when they fail. Opening and not damaging the seam to remove the end cap was not easy. But it allowed me to remove all the rust and thouroughly clean the tank. Soldering was also not easy for someone as inexperienced as I am. It's not pretty but I was able to remove some of the excess with a file. I put about 12 lbs of air in before retiring last night. Pressure is holding at about 10lbs this morning. I think I will prime and paint the exterior before installing.
As always VCCA is the best!
Thank You
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Please do not let the "sky is falling", "the sky is falling" people scare you away from a proven method of protecting your recently cleaned tank. If your tank is not protected, you run the risk of rust in the upper portion of the tank not covered by fuel. I can provide pictures and description of what happens. True, the early tank coatings (yellow snot) was not compatible with the mixed fuel that came along later then the coating. I have used the new combinations that are currently available and have not experienced any problems. This does not mean than some new formula or additive in our fuel may react with the current coatings. It is unfortunate that problems were experienced with the early coating and strikes fear to current users.
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Mar 2006
Posts: 90
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Mar 2006
Posts: 90 |
Ray,
I appreciate the follow up. Seems that coatings are the way to go if proven new products are available for those places we can't so easily get to..... like inside gas tanks. I'm not so sure coatings would be the method of favor if the inside was easily accessable?
This was my first that cost little in dollars but was more involved than I expected. I do have another tank for another "31" that I have no intention of opening up. I will probably have it acid washed at a radiator shop and then consider using one of the new coatings. For now the one I've just cleaned will be kept essentially full with an additive to minimize moisture. An inline filter will also be installed.
If I live long enough and get to the other car, perhaps I may compare the two methods.
As always VCCA, your comments and support are appreciated.
Bob
Last edited by willow; 11/12/11 04:48 PM.
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