keeping water out of the engine compartment is a good idea Matt, but it's not going to happen...lol the whole idea with installing scupper valves is to eliminate the need for bilge pumps draining the battery, and when you're running a total loss system added with a bilge pump, or dual bilge pumps for that matter, combined they will kill a battery, fast. Although, some people will bilge pumps and scuppers at the same time. :dunno:
what do you mean by "air leakage"?
Really?
I have run several total loss systems over the years, always with dual 500 GPH bilge pumps running, and the battery was good for at least four tanks.
Not buying the bilge pump argument :veryhappy: