1991 playtime cuddy. 140 merc and alpha 1 prop size help

Chuck89

Recruit
Joined
Aug 31, 2020
Messages
1
New to the forums and new to boating. I’ll introduce myself. Names chuck and recently got a 1991 playtime 18.5 cuddy with a 140 merc 3.0. Not sure what ratio my outdrive is but I have a prop question. After searching the prop numbers it looks like I have a 23 pitch 14 inch prop seems a little over propped but wot is 4200-4300 and no more should I go to a 19 to bring the rpms up some or leave it be. Thanks and sorry I’m advance if i posted in the forum incorrectly.
 

WesNewell

Chief Petty Officer
Joined
Jan 3, 2018
Messages
497
A 21p should get into the wot rpm range lower end. A19p would probably get into the higher range, which I think is 4400-4800.
 
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