Johnson prop choice

Joined
Apr 20, 2005
Messages
28
Hi all, my question is this. I have an older Johnson Super Seahorse 40hp (not quite sure of the year) on a 15' Pacific Mariner runabout. What would be the best prop for top speed performance?
 

R.Johnson

Rear Admiral
Joined
Sep 24, 2003
Messages
4,446
Re: Johnson prop choice

You really need a tach. to determine that. You want a prop that will let the engine turn to the top of it's RPM range. Can you post the model no. of your engine.
 

angus63

Captain
Joined
May 20, 2002
Messages
3,726
Re: Johnson prop choice

The best prop is the one that gives you WOT rpms near the top of the WOT RPM range. Without those numbers, it's anyone's guess.<br />Good luck
 
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