Re: Parker 252 Repower
You are correct, you should not hammer it until after the break in period.<br /><br />I would go to the Yamaha web site, go to the motor test section, and find other boats that have been tested with twin 150 4-strokes, that weigh about the same as yours, to give you a prop pitch starting point. <br /><br />I would then get the closest prop to the test reports that I could find (dia. and pitch), and either SS or alum (I like SS, but many don't).<br /><br />But again, I would not open it up until I put the 10 hour break in period on the engines.<br /><br />Spend a Saturday playing/riding around, showing off your new engines, then open her up and see how close you guessed.<br /><br />Most reputable engine dealers will allow you to swap the props if they still are "like new" too, hopefully you made that part of your negotiation for the purchase of them.<br /><br />Good luck, and let us know how they do.<br /><br />Ron
