04-23-2007, 08:32 PM
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Moderator
Captains Club Member
190 Bay Owner
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Join Date: Nov 2004
Location: FL
Posts: 1,294
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Pitch sounds a little high, but you may just want to back off some on the diameter. Is this a 3 blade or 4 blade screw?
We have posted in the marine engine section the various prop test data from Yamaha and I would compare that test data with your current set up. You have plenty of engine to grunt out some more speed for sure... 
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Dave the ComPutershark Boat Name "Sarcosuchus" 190 Bay equipped for Flats & Jungle Warfare
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