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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Beware fuel tank sealer
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<blockquote data-quote="davidd" data-source="post: 56200" data-attributes="member: 1177"><p>I cleaned a painted tank with MEK and sealed it with an aircraft tank sealer, but the tank was retired years ago, so I am unable to talk about the long term properties. I have cut apart tanks with Kreem sealer and would never recommend it. I used a highly recommended sealer from my fiberglass resin supplier and it failed. I know people who have had luck with certain sealers, but I am not sure that they will last in the longer term.</p><p></p><p>I would never use sealer in any gas tank. I would fix the underlying mechanical problem. If I were Ian, I would be wondering if the tank had been repaired by welding years ago and tested, it would be fine today and not presenting another issue requiring the holes to be cut into the tank. </p><p></p><p>I sealed the racer fuel tank just because I was doing another tank at the time. It failed in both tanks. In the fiberglass tank it went soft, even though I had a control piece sitting in fuel for four years that is still as hard as a rock. It came off the sides of the racer tank (Steel) within hours. I put the tank on the band saw and cut it in half to clean it because I use a tank cover.</p><p>[ATTACH=full]3127[/ATTACH]You can see the cut just above the bend line in the tank. </p><p></p><p>I do think the sealers have gotten better over the years, but I think they are a shorter term solution than many would think.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 56200, member: 1177"] I cleaned a painted tank with MEK and sealed it with an aircraft tank sealer, but the tank was retired years ago, so I am unable to talk about the long term properties. I have cut apart tanks with Kreem sealer and would never recommend it. I used a highly recommended sealer from my fiberglass resin supplier and it failed. I know people who have had luck with certain sealers, but I am not sure that they will last in the longer term. I would never use sealer in any gas tank. I would fix the underlying mechanical problem. If I were Ian, I would be wondering if the tank had been repaired by welding years ago and tested, it would be fine today and not presenting another issue requiring the holes to be cut into the tank. I sealed the racer fuel tank just because I was doing another tank at the time. It failed in both tanks. In the fiberglass tank it went soft, even though I had a control piece sitting in fuel for four years that is still as hard as a rock. It came off the sides of the racer tank (Steel) within hours. I put the tank on the band saw and cut it in half to clean it because I use a tank cover. [ATTACH=full]3127[/ATTACH]You can see the cut just above the bend line in the tank. I do think the sealers have gotten better over the years, but I think they are a shorter term solution than many would think. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Beware fuel tank sealer
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