Different kinds of fuel tanks?

[scrit9mm]

I got a great deal on a 14' duracraft aluminum boat ($100). The motor looks like it fell off the back of the boat while at speed on the road, so I dont want to fix it. The boat has not had a sticker since '93 so I trashed the old gas tank and fuel lines because they looked and smelled terrible. While I am looking at purchasing a outboard 10-20 hp I came across information on pressurized and siphon style tanks. I understand the siphon style is what is sold now, and the pressurized tanks are really hard to find. My question is are there certain model year outboards that require a pressurized tank? If so can the motor be used with a siphon tank, with what modifications?

I apoligize in advance if this is posted in the wrong place. My question is not brand specific.

 

[Fisherball]

Re: Different kinds of fuel tanks?

The type of tank you need is determined by the motor, most use siphoning. Some older motors need special, pressurized 2 line tanks to work.

 

[NYBo]

Re: Different kinds of fuel tanks?

The pressurized tanks were used by Johnson/Evinrude back in the 1950s. Some consider the design dangerous, and many have been converted to the modern style, which requires a fuel pump. Not sure if other makers used this system.

 

[Texasmark]

Re: Different kinds of fuel tanks?

The pressure tanks with a pressure hose and a fuel hose (dual hose which I thought was cool at the time, but I was a young boater and had an awful lot to learn) came about because OMC didn't figure out that you needed a fuel pump on an outboard motor. They figured that you put a little pump "hootus" on the top of the tank and pumped pressure into the tank which forced gasoline into the carburetor and their engines would work. Well they did for awhile. Had real problems as the interconnects got worn and all the "hot dog" engineer with his head in the sand theories blew away in the real world.

Mark

 

[DuckHunterJon]

Re: Different kinds of fuel tanks?

You'd be better off sticking with the siphon type tanks. One question though - how bad is the old motor. A trip down the road may not do much for cosmetics, but unless it hit something (telephone pole, guardrail, etc) it might be salvageable for much less than a new motor. Just curious.

 

[scrit9mm]

Re: Different kinds of fuel tanks?

You'd be better off sticking with the siphon type tanks. One question though - how bad is the old motor. A trip down the road may not do much for cosmetics, but unless it hit something (telephone pole, guardrail, etc) it might be salvageable for much less than a new motor. Just curious.

The bottom plate of the motor (I'm not sure what it is called) where the engine cover sits on is missing a large portion of the rear where the latch would connect to the top. The shaft that controls the throttle from the tiller control is sheared, and several brackets are bent/broken. I havent even looked at the carb to see how it is. Being my first outboard I would be better tackling a carb rebuild and or impeller type issues, not rebuilding an entire engine.