Good idea IMO.
The thread about changing your water pump and T-stat was very informative for guys with little to no experience of maintenance for their engines. Alot of the members on this board are old salts (and I mean that in a good way) and know this stuff already.
This is a very user friendly site for people learning salt water fishing knowledge, I feel it would also bring more people on board rather than lurking especially if there is a question they may have.
Organization is everything and keeping topics (like engines and maitenance) in a seperate forum would make it easier to browze for information.