Chicago Sea Ray
Member
I've heard that as well, but it must've been a rumor reinforced by the suggestion that bluewater = saltwater. A Bluewater edition, particularly in the Great Lakes is highly likely to have a fully-open cooling system. (which is fine in absence of salt)
My 97's are regular throttle-body electronic FI big blocks. It preceded the Horizon series. They came with the older 3-piece water pump assemblies and the horrific mechanical fuel pump that shares the same shaft. Mine engines have been rock-solid aside from those components. As most people have, I upgraded the water pumps and keep a close eye on the fuel pumps. I've never heard of a 400DA that has had engines ingest water. I'm bummed for Joey that it happened in his 330.
Couldn't agree more on the 7.4 MPIs... they're rock solid but suffer from a terrible water pump & mechanical fuel pump design... the product of the '97 GM block no longer having a location for the fuel pump and Mercruiser being a year behind on designing a complementary electronic fuel pump. I replaced the entire housing last year which set me back $2k in parts. A rebuild was cheaper... but I'm obsessive. I'd recommend keeping an eye on these components, as it's important to flush the tiny gear oil reservoir annually to ensure no fuel has found it's way in.