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Bertram31.com General Bulletin Board
Re: MMO mystery
Posted By: Al Lupone In Response To: Re: MMO mystery (Dave Decker)
Date: Thursday, 1 December 2005, at 9:06 p.m.
Dave,
You must be a bargainer extraordinaire to get new 8.1's & trannys for that price. Then add in mew shafts & props & possibly new struts. Those of us that have B33's are figuring $30,000 plus at the cheapest by the time we are done. That is with doing all our own work.
Second, as far as the stainless tank, ABYC says that is a no-no. I've pasted a message from the Ask The Experts at BoatUs.Al Lupone
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"Seaworthy:,Hi I am replacing the fuel tanks on my sail boat, Is there a problem with using aluminum to build the tanks or should I use 316 or 304 stainless steel, There is a significant price difference in all three. Thank you
Gary
Answer
Gary,The only problem using aluminum is probably the reason you're replacing them - corrosion. If your tanks leaked due to corrosion, you need to make sure that whatever caused the problem is fixed before you install new tanks. Usually tanks corrode because bilge water remained in contact with them, or they were installed so that water was trapped - resting the tanks on wet carpet or some other absorbent material. That said, aluminum is a good choice if they are kept dry.
These are the types of aluminum approved for boat use:
Aluminum Alloy 5052, or 5083, or 5086.
.090 in. (2.29mm)Stainless steel is not recommended except for small tanks. Acorrding to the ABYC (American Boat and Yacht Council), only cylindrical stainless steel tanks with domed heads and a capacity of less than 20 gallons are permitted in 316L or 317L .031 in (.79mm).
Tanks should be made by a facility that can pressure test them.
Seaworthy:"
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