Re: dixie hustler "deck job" (turned full rebuild)
Aside from add limber holes, what more can I do to allow condensation to escape from that cavity?
I like the idea of foaming it because it will certainly be secure, but I want it all to last.
. . . I know condensation eventually becomes an issue.
My thoughts on what can be done to provide better results with foamed in tanks.
As JnG said . . . paint the tank (some say not to, but with the proper paint, etc., it does provide a barrier)
Since boat manufacturers don't generally design their fuel bays to allow drainage, there are a couple of things that you can do, and that I did on my recent rebuild.
Provide a drainage path underneath the tank. Below is a drainage duct that I fabricated for my tank installation.
Then I provided an open space at the back of the tank where water could collect and go through the limber hole that I installed in the bulkhead.
This is the area where the water had collected after 20 years of use with the previous tank, etc. Once the boat was all put back together, the open area behind the tank was accessible via the same deck plate used to access the tank fittings and sender.
Ideally, the fuel tank bay should have a raised sole, higher than the keel level, as well as drainage underneath the tank, but drainage itself is an improvement over the typical OEM installation.