1985 Johnson 140 looper Propellor

ksound

Cadet
Joined
Sep 18, 2007
Messages
17
Hi Folks,

1985 140HP looper with a 25" V6 Gearcase
I am running a 14.5 x19 SS prop
I am getting 4500 rpm wot average load
30 mph wind at back
Chaparral 198f dual console bowrider a little less than 2,000 LBS

What size Prop should I buy? a 17 or less? also what about Diameter.
 
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