Re: Converting pressurized Johnson to fuel pump system.
What year was your friends 5.5? What all did you have to do to convert it?That is correct. The last "double line" I used I had to cut off about an inch, every year. They seem to crack at the connections.
You can also create your own "double line" using modern single line fuel hose. Did that on a friends 5.5.
Still OK.,after a couple years.