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fuel tank conversion

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cedarcreek30

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I have a 1955 Johnson Seaking 5.5 HP, Im looking for a conversion kit to convert the double fuel line pressure tank system to a single fuel line tank system. any suggestions? cedarcreek30
 
There is no "kit". Furthermore, the 5.5 was not designed for a fuel pump. But lots of people have done it anyway. Most common method is modifying the intake manifold and reed plate and using a Mikuni fuel pump.
 
There is no "kit". Furthermore, the 5.5 was not designed for a fuel pump. But lots of people have done it anyway. Most common method is modifying the intake manifold and reed plate and using a Mikuni fuel pump.

Here are the instructions, if you want to go that route. http://www.duckworksmagazine.com/05/columns/max/5/index.htm

BTW, I do not agree with the statement that the pressure tanks are dangerous. ANY tank is dangerous if it leaks.
 
fdrgator said:
There is no "kit". Furthermore, the 5.5 was not

BTW, I do not agree with the statement that the pressure tanks are dangerous. ANY tank is dangerous if it leaks.
Click to expand...

Johnson/Evinrude thought they were dangerous enough to discontinue making them in the 60s.

I just converted my 1957 Evinrude 5.5 to a singe line. I found a Ashata fuel pump on Walmart's web site for $10.11 with free shipping and it works like a charm. I ordered an extra one for a spare since the whole pump is cheaper than a repair kit. It was easy to install. It required removing the intake manifold and plugging off one of the check valve holes with a vacuum cap and rerouting the vacuum line to the fuel pump instead of to the gas tank. Doing it like the video shown above in another post is to messy. It's a lot easier to just use a vacuum cap to plug one of the check valve holes off instead of using glue.

I mounted my fuel pump with steel brackets that I made instead of using wire ties that are shown in some of the youtube videos.

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They didn't discontinue pressurized tanks. Government mandates say fuel vapors cannot escape the tank. That necessitates one-way tank vents to let air in but not out. Since air cannot get out, they will build up considerable pressure out in the sun. A leak can still squirt gas all over the place.

Yeah I know, leave the cap loose. And let the gas slop out if you fill it up.
 
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