Stringer Foam

[Capt Terry]

Wondering why there are so many reports of wet foam. I know there are differing opinions on foam around aluminum tanks. When I replaced mine RDS told me to use “closed cell” foam. Was that not used during original manufacturing years ago or does the closed cell foam break down? As I recall there was no saturation of the original foam around my tank.

[Vezo, Part II]

I believe that my @ 70 gallon tank on my 1979 MA, new to me in 1996, was a second tank, due to the elevated tank fill. Whatever type of foam was not correct. The cell gave up the ghost on bottom and sides, were eaten through aluminum wherever in contact with foam. New tank being installed now. No foam and coal tar epoxied. Aluminum fuel tanks have become somewhat expensive.

Vezo Part I! 1987 18 SF, new fuel tank, installed in 2009, has become corroded with stuff while storing/buying non ethanol fuel, and only on the Inside! Fuel/Water Separator doing its job on a 2009 Suzuki 140 and runs like a Champ on above deck 12 gallon remote fuel tank.?.

Vezo, Part II