Home › Forum › Ask A Member › 18 -> 20hp…a simple conversion? › Re: 18 -> 20hp…a simple conversion?
December 1, 2015 at 1:00 pm
#27885
The differences in 18-20-25 (22 cubic inch) motors will confuse the best of us. They all are based on the original 18hp, then went crazy from there with different combinations of pistons, cylinder heads, carbs, etc. For years, Evinrude dealers sold the 18hp, while the Johnson dealer down the street had 20hp motors.Your best defense is simply go by the parts books. Trouble starts when you try mixing parts.