Re: Late 50’s Johnson 18 hp compression?

Home Forum Ask A Member Late 50’s Johnson 18 hp compression? Re: Late 50’s Johnson 18 hp compression?


hdted


Replies: 37
Topics: 10
#76341

I had a 1974 25hp NOS motor still in the box. It had 140 psi cranking pressure. I don’t know if there was a difference between the 18 and 25, but they were both 22 Cubic inch motors.