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Different cooling, different materials, different ECU programming. The engine is cooled by sea water, additionally so too is the exhaust manifold, which is not seen on automotive engines.
Stainless steel water transfer pipes are used instead of cheaper rubber or pressed steel for risk of corrosion.
The engines are typically designed to run at permanently high revs depending on the marine application.
What else can I help you with?
What is the difference between a vehicle engine and a marine motors?
Boat engines are built to hold high rpms (revolutions per minute) for long periods of time. Vehicle engines are not built for high rps or most of the anyways. Vehicle engines also have more torque the marine engine.
What is the difference between a swinging cradle and a tilting boat trailer?
there is no difference
What is the difference between a kayak and an umiak?
the kayak is a covered boat and the Umiak is an open boat
What is difference between ferry or a boat?
one is a boat and one is a pixie like thing
What is the difference between a steam boat and a train?
a steam boat is on the water and a train is on railroad tracks
What is the difference between a raft and a boat?
One has sides and one does not
Are the tug boat engines are two stroke or four stroke?
All tug boat engines are four stroke engines, because this engine responces quickly in relation to maneuvering this kind of boat in any situation.
What has the author Dick Hewitt written?
Dick Hewitt has written: 'Boat engines' -- subject(s): Maintenance and repair, Motor-boat engines
What is the difference between displacement and hull weight on s sail boat?
Displacement: The weight of the water the boat displaces. Hull weight: The weight of the hull of the boat
Can you use auto power steering oil in your boat?
Do not use auto power steering oil in a boat.
Weight difference between a 150hp mercury boat motor and a 200 hp boat motor?
I would say 50 H.P.
What is the difference between cigar boats and cigarette boats?
"Cigar boat" is a nickname for the high-speed powerboat called the Cigarette boat.
