There are, all-in-one intake/exhaust manifold/heatexchangers available at
@$1200. I guess it would be possible mount the turbo to the exhaust exit
of the marine manifold and plumb the turbo outlet back down the throat of
the intake man....
I would do something like: Insulate the exhaust manifold to limit heat
lost. Pipe the exhaust from the turbo to a coil of 2.5" OD pipe mounted
in a 55 gal. drum of water. Having several coils would probably do away
with the need for a muffler. Circulate water from the drum to move heat
where it's needed.
BTW. The marine engine coolant is cooled by raw water pumped by a
impellor pump driven by fuel pump gear (off the front) or by belt.
The *big question* for me is how to regulate the engine rpm? The
generator must turn 1800 rpm under all load conditions in order to
maintain 60 hertz. Generators have special fuel pumps with centrifugal
governors. Maybe there is a eletric governor you could add.
Mack
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Mack Horton
Beaufort NC US
www.clis.com/mack