tony thomas wrote:

Be carefull w/ putting a lot of hp into a boat that was not designed for it.
I/O type boats - if overpowered - will run sideways due to the torque of the
engine. The boat is just not designed hull wise for a big hp/torque power
plant.
They come w/ V8 but at about 250 hp or so. If you put 400+ hp in it you may
find that it does not run straight.


On a typical I/O single(Mercruiser, Volvo SX, Cobra), facing the stern
from outside the boat, the engine is turning ccw, and the prop(single,
again) is turning cw... so I really don't understand your statement - is
it torque from the prop or from the engine? If it's the engine, what is
the moment?

Rob