[Chris Burkard]

The 550 HP mechanicals have a longer life span than the 625 DDECs. Obviously less horsepower equals more life. Keep them well maintained and you should get good life from them. The good news is these engines have been around a long time and where used most vessels from 40 - 55' from the early 80s up to 1998/9. Parts should still be available and the old time diesel mechanics can easily work on them. They are much simpler engines to work on than the new electronic engines.

Good Luck and have fun!