Johnson TD 20 remote tank

[airman1094]

Hi all been a while since I was last on here. Got a 40s TD 20 I revived last winter and used the **** out of it this pass summer. Motor is simple and reliable but I'd love to be able to add a remote tank and use the built in tank as a reserve. I know she doesn't have a fuel pump. Does anyone have experience putting a fuel pump in line and maybe using a regulator to get the pressure right? I hate refueling while underway.

 

[F_R]

Because it is a bottom feed carburetor, a fuel pump probably will not work reliably. Fuel pressure tends to hold the float valve closed. Speaking from experience.

 

[airman1094]

That's good to know. Guess I can use a small pump to transfer fuel to the tank when it needs a fill up. That way I dont get the chance to spill gas in the water

 

[racerone]

Should be easy to figure out where to install / mount a small square fuel pump from say a 1970 4 hp Johnson.___The 3 hp models of the 1960's had a top mounted tank with a spot to mount an optional pump already on the block.

 

[F_R]

Should be easy to figure out where to install / mount a small square fuel pump from say a 1970 4 hp Johnson.___The 3 hp models of the 1960's had a top mounted tank with a spot to mount an optional pump already on the block.

But of course, the TD was a totally different animal.

 

[racerone]

Yes I know that.----What i do not know is the inginuity / ability of the poster.

 

[airman1094]

I'm somewhat resourceful....I've got a few ideas ranging from just plain leaving it alone to a work around of some sort. IE providing a remote supply to the fuel tank on the motor....Hmmm. Wonder if by plugging the breather and replace with a fuel line from remote tank the negative pressure would cause a vacuum effect.
I had thought of getting a fuel pump and a pressure regulator....Or even turning different needles on the lathe...Choices choices. Or again I may just leave it alone. Why fix what's not broke!

 

[HighTrim]

I would simply get a good fuel transfer system, not mess with what works well.