"I have 3 motors a 1965 Johnso
"I have 3 motors a 1965 Johnson 40 model RDSL-27M that is on my boat, a 1964 Johnson 40 model RDS-26R and a 1967 Johnson 40 model RKL-29E. Are these interchangable, I was thinking of changeing the powerhead from the 67 to the 65 because the 65 burnt the lower piston and scored the cylinder a little bit also what kind of plugs should I use in these and last but not least what should the gas mixture be? Any info would be awsome, Thanks, Duane."
"I have 3 motors a 1965 Johnson 40 model RDSL-27M that is on my boat, a 1964 Johnson 40 model RDS-26R and a 1967 Johnson 40 model RKL-29E. Are these interchangable, I was thinking of changeing the powerhead from the 67 to the 65 because the 65 burnt the lower piston and scored the cylinder a little bit also what kind of plugs should I use in these and last but not least what should the gas mixture be? Any info would be awsome, Thanks, Duane."
