What happened to my paint??

Discussion in '1947-1954' started by Bilbo, Dec 1, 2014.

  1. Lakeroadster

    Lakeroadster Member

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    To gain some confidence.. I'd be inclined to put a vacuum gauge on the fuel pump and check to see how much vacuum the pump can pull.

    Then build the overflow tank, fill it, and use a hand held vacuum pump to see how much vacuum is needed to evacuate the overflow tank. You'd want a length of rubber hose about the same as you'll be using on your truck... and the hose should be held up above the expansion tank, at about the same height as what it would be in the truck.

    As long as the vacuum to empty the overflow tank is less than the vacuum the fuel pump can generate.. your good to go.
     
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  2. Bilbo

    Bilbo Member

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    Well, Here are a couple of pictures of the work. The recovery tank is polished stainless steel, and the cab is lined with foil backed insulation, so there's a lot of glare on the pictures. 20180107_141842.jpg 20180107_141853.jpg 20180108_141344.jpg 20180108_165357.jpg
     
  3. Lakeroadster

    Lakeroadster Member

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    That should work. My only concern is will the non vented gas cap be liquid tight? If it isn't you may still have gas dripping out since it appears the inlet to the expansion tank is above the gas filler cap.
     
  4. Bilbo

    Bilbo Member

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    Picture is crowded... The tap for inlet to recovery tank is in center of the rubber hose in the vent line. This puts it about 4 inches below the bottom of fuel filler inlet. The overflow from recovery tank is about. The same level, so if recovery tank fills up it will still dump on ground instead of on paint.
     
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  5. Bilbo

    Bilbo Member

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    I need to mention that if anyone wants to do this mod, I'd drill and tap the angle iron that the recovery tank is mounted to. That tank came from Summit. #OER 60781, $32.97. Polished Stainless Steel, 3x16 inches, holds 52oz. Tank has 1/4" tubing inlet and outlets. I worried about it handling the flow, but I gravity flowed through 1/4" fuel line and it filled up in 90 seconds. I found brass fittings to adapt everything at Home Depot, for about $18.
     
  6. 50 Chevy LS3

    50 Chevy LS3 Member

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    Hey, Bilbo. I don't think you've said whether or not you've had the paint repaired yet.
    You know how we all like pictures.

    Steve.
     
  7. Bilbo

    Bilbo Member

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    Sadly, I haven't repainted yet. Been waiting for the spill "fix" just completed. Since I paint outside, it may be a bit before I get weather cooperation, and prep work done. I am confident that we've (Lakeroadster and I) have resolved the problem though. Much gratitude to Roadster for his engineering input. I've seen, and heard of others having this same problem, so as time passes and the system inevetably will get tested, I'll follow up with any info that I think is relevant. Also close up "before and after" pics!

    20180110_143627.jpg

    I should point out, as you zoom in on this photo, you can see several places where paint has flaked off. Additionally, if I rake my nails across that area all the paint will slough off! I've been babying the area to try not to knock off any more paint 'till I jump in to repaint.
     
    Last edited: Jan 16, 2018 at 8:30 AM

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