Powerboats with inboard engines and outdrives (I/Os) are a popular configuration for those boaters who want the high-horsepower and weight distribution of an inboard, without compromising the easy kick-up shallow-water capability and trailerability of an outboard. I/O drive manufacturers like Merc-Cruiser have been perfecting this combination for years.
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We have more boaters in the U.S. on freshwater lakes, ponds, and rivers than we do on the ocean and this is precisely where the largest percentage of I/O boats can be found. Their high-torque is great for water skiers and wake-boarders. All the other attributes work well for fishing, too.
I was more than a little curious when a friend of mine picked up an 18-foot 1984 Sea Ray Seville for $1,500 from a boat donation program. He intended to use the boat on Lake Winnipesauke in New Hampshire and keep it on a trailer in his yard when not in use. I figured the low cost was related to the outdrive needing maintenance, but the outdrive had been removed from the boat to deter theft and this had scared many would-be buyers away. My buddy was familiar with working on and tuning up his own cars and trucks, so the Mercury (Chevy) 4-cylinder gas inboard didn’t intimidate him—but the outdrive service did. So he bought the Merc-Cruiser Alpha I service manual and a few specialized outdrive tools for less than $200, and set about fixing the boat.
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Outdrives have a rubber seal called a bellows where the outdrive unit can raise and lower to keep the water out. After a number of seasons in the sun the seal can fail and water can get in. After replacing the universal joint and reinstalling the outdrive with the special alignment tool and a new bellows, he was in business.
My buddy has had his boat for seven years now. He did buy a new trailer for $1,900 and put maybe another $1,000 into general maintenance in that time to doll it up, but now he has a nice boat that’s perfect for his needs and is still going strong.
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