I love my Johnzuki 140 on my V20.

40 mph top speed, 5 mpg, quiet as a mouse, 8 years with no problems so far (knock on wood).

I'd love to know how your getting 40 on a v20.. My zuke 140 only gets me to about 43 on the 180.. I sure miss the old Johnson 150 2 stroker, i've had that boat up to 58 when it was newer and low on fuel.

Bruce, looks like you got bottom paint on that 180, thats worth quite a few mph, especially if its been recoated a time or two

Well thats true, but damn i hate to think its that much drag.. at the resto, the bottom was sandblasted then epoxy coated, theres 1 coat of blue base coat, and then a coat of black.

could be an issue of balance as well, the 20 may be better at offsetting the weight of a four stroke than the 18