Gas Tank Size on Refitting our M33

[gonesail]

one thing about a shallow wide tank is: if it has a flat bottom .. your motor can suck air and die in rough seas or if healing. i would go with a welded aluminum tank (maybe you can have 2) in the engine compartment. if you put the tank under the floor it will be difficult to reach when you need to.

[HappyMdRSailor]

Glad you found a solution!

Not sure what is taking up the space in your boat.... But on my M33 the 40+gal tank is behind the engine, above the shaft, and in front of the rudderpost... Plenty of room there??? I'm powered with a bigger 4-107...

[a64pilot]

On aircraft we use what is called a header tank, it's a tank that stays full, no airspace, so that when you get knocked around in turbulence and you un-port a fuel line you don't flame out an engine. Header tank needs to be below the main tank to work. Another way is to use a "clunk", which is just a weight on the end of a rubber hose, no matter how you turn the tank, the weight on the end of the hose will keep the pickup in the bottom of the tank. Just possibilities