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how far can a fuel tank be from the engine?
Could i move my diesel fuel tank from where it currently is (under the quarter berth) to the port side under the settee?
my boat was designed with two 52 gallon water tanks, one under the starboard settee and on under the port side settee. it also has a 44 gallon fuel tank under the starboard side quarter berth.
i have very, very (basically none) limited access to anything behind the engine and being an older boat that needs a lot of upgrading in that area, the best way to gain access is to move or remove the diesel tank and cut an opening in the wall between the engine and quarter berth. if i did i would basically have unrestricted access to the entire engine, two massive scupper seacocks (that will need replacing soon), batteries, water heater, steering quadrant....etc....
i could remove the tank when i needed to get access but i was sitting there yesterday thinking maybe, if i could put the tank that far away, it would make more sense to permanently move the tank instead so i could keep the easy access to that area.
if my thinking is correct the boat could handle the re-distribution in weight. i dont use the port side water tank anyways and was thinking of removing it for the storage space.
i can get a replacement fuel tank from the original manufacturer that would fit under that port settee. the water tank there now is actually an aluminum fuel tank. the original manufacturer is still in business and would make an exact replacement tank.
the weight distribution would be about the same as if it were water but there is the question of distance. i would have to run fuel lines about ten feet to the engine. there is already a filler valve and vent that runs to the deck (originally for the water tank).
to replace the lost 300ish lbs of weight that the fuel tank added to the starboard side area of the quarter berth i was going to add a battery bank for solar panels. i could move the battery bank a bit further aft and keep access to engine compartment but replace the lost weight distribution in that area of the hull.
so long post short...is there any significant reason why this would not work or would be a bad idea?