Here is what I'm thinking....let me know if you guys have any input or thoughts in general.
For starters I have a 25 gal fuel cell in the bow of my boat (I know the placement sucks). I need to carry more fuel. Now, I carry a couple of 5 gallon cans in the back engine compartment for extra fuel. I'm thinking of putting two 14 gal (or there abouts) fuel tanks in the back under the gunwale next to the engine. I'm thinking of plumbing it so I have the motor running off the two tanks in back and as the day wears on using the existing red holley fuel pump as a transfer pump to keep filling the back two tanks. This would give me over 50 gallons of fuel on board which would be just spanky. I run long ski trips up and down the river where there is very few fuel stops. In fact NO fuel available within 20 miles of where I usually run the boat. I can't run it closer to the fuel on the river because of the god forsaken manatee zones (no wake) that plague the area around the marinas.
So back to my plan. I suppose I need a dual inlet fuel pump for the two tanks in back. I could mount the pump over the jet intake behind the motor and draw from both back tanks at the same time. I guess I'd need 3 fuel level guages and then plumb the existing fuel pump to deliver fuel to the back two tanks when needed. This would allow for some better performance when the front tank was close to or at empty. Will the red holley have a problem with zero pressure fuel transfer? Or does it make a difference. I've never run a fuel pump as a transfer pump before. I know some types of fluid pumps aren't designed to run with no load on the pressure side. thoughts?
You guys with dual tanks...do you draw from both tanks at once, or do you switch from one tank to another? Anyone see a way I could get away with this with just one fuel pump? I don't.
The good thing about a plastic cell in the bow is that it doesn't way shite when it's dry So when I'm running in a better location, or just a light day on the river, I can only fill up the two back tanks and maybe put a couple of gallons in the front tank for poops and giggles.
Thanks,
Nick
Sure, I'll have to take out a bank loan before I hit the gas station, but that's boating :eat: If I gave a shit about fuel I would have bought a jet ski :sleeping: