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#2
02-11-2015, 10:01 AM
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Question????
the internet is a dangerous thing... I have read a couple of different articles that state you should not foam around the gas tank... They state that water will accumulate around the aluminum and corrode it and the poly tanks need to expand..
I know a lot of you restorers have replace tanks so what are your thoughts??? 
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#3
02-11-2015, 11:34 AM
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Quote:
But WHY do Poly tanks need to expand? That's what the vent line is for. There is no expansion with built in tanks that I know of.
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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#4
02-11-2015, 12:01 PM
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i used mechanical fasteners to hold my tank in, just so i can remove it easily for maintenance. the original was unpainted/coated and foamed in. it lasted 30 years.
a lot of guys use coal tar epoxy to coat. i have never used or applied bedliner, so i don't know about it. it does very well on scruffed up steel. some even powdercoated, but i have heard of it cracking. probably the best is to do what you think is best/ affordable, then seal the deck very well. i chose to leave my compartment open for air circulation. not sure if that is best, but i can always go back and seal and foam.
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#5
02-11-2015, 12:16 PM
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Hey Phat did you put any drain holes in the gas compartment to let any water that may get in the escape? I want to seal the compartment but still having doubts about making it unexcessable. I like your idea about having it available to maintain. Do you get any water in there?
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#6
02-11-2015, 12:45 PM
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go back to post #32, that is the size of the drains i installed in the forward and aft bulkhead in the tank compartment. the original was a piece of 3/4 pvc, which was continually getting stopped up. the tank is sitting on 1/2 pieces of foam off of the hull on the sides. this allows air and water to drain to the bilge when inclined. any water in the bilge will flow freely in and out of the fuel cell compartment.
this is the part that concerns me. still not sure if i am going to leave like this or not. considering glassing a larger drain pipe to the bottom and sealing the compartment.
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#7
02-11-2015, 01:15 PM
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I plan on doing that also... I think the pipe running down the middle is a very poor design.. Seems like everybody has rot starting right there.. Will figure out some way to drain the water under the tank when I get the tank.
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