[Destroyer]

Originally Posted by gotomgo

ok 5th engine and 4 time re-powering this season(crappy craigslist engines with secret problems etc..)everybody was right about the 125 merc saltwater being too small. it does work but i have to push it too hard etc.... so have been mainly going very slow its reliable etc etc...my plan was to re power next year with a bigger engine. its a 78 center console had a 150 black max on it .i came across a great deal on a 200hp merc for it. Its guaranteed etc...i couldn't pass it up.has a nice 4 blade stain less prop on it(dont know size currently)I'm super excited to see what this boat will do with a 200hp on it.i have the old prop off the 150 plus my buddy has a bunch of stainless racing props cleavers etc from his older days. I understand the right prop is everything but with the right prop how fast do you think she will go? I know the fuel bill will be ridiculous

It's not just the prop (Although they are one of the main factors) It's also the wind, current, waves, how much weight you have in the boat (gear, people, etc) temperature, humidity, pure gas VS Ethanol 10 gas, etc. Having just said that, all things being equal, on calm water with little weight you should be able to crack 50 mph on your GPS with no sweat.