I'm looking at a Parker with a 260 hp Mercruiser with approximately 700 hours. In general, about how many hours will this engine run until requiring a rebuild, and approximately how much does a rebuild cost?
Most gas inboards are good for 1500 to 2000 hours depending on maintenance. That being said, Mercruisers aren't rated as some of the best. The no. 1 spot goes to Crusader and no. 2 is Marine Power if I'm not mistaken.
David Pascoe does an excellent write-up on gas inboards...