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Torque and Power:
Many reviews emphasize the importance of high torque for handling heavy loads and maintaining control in challenging conditions, like strong tides or rough seas.
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Fuel Efficiency:
Diesel engines are noted for their excellent fuel economy, which is particularly beneficial for long voyages and helps reduce running costs.
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Noise and Vibration:
A good marine diesel engine should run smoothly and quietly, with sound deadening and balanced designs contributing to onboard comfort.
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Reliability and Longevity:
Diesel engines are renowned for their robust construction and long lifespan, often exceeding 5,000 hours with proper maintenance.
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Maintenance and Repairability:
Mechanical fuel injection is preferred by some for its ease of repair in remote locations compared to electronic systems, which offer lower emissions and more features.
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Engine Features:
High-quality engines include features like fresh-water cooled exhaust manifolds to prevent corrosion and ample alternators for charging batteries, even at low RPMs.
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Known for smooth, quiet operation and innovative features like electronic throttles and efficient fresh-water cooling.
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Offers a range of engines, with models like the 4LHA-STP featuring turbocharging and intercooling for increased power.
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Sole:
Praised for a good balance of power and weight, making engines like the Sole Mini-29 viable for smaller cruising yachts.
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Utilizes industrial-grade components for durability and reliability, with features like high-compression ratios for power.
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Boat Type Compatibility:
Ensure the engine’s power and size are suitable for your hull, whether it’s a long-keel cruising yacht or a fast semi-displacement cruiser.
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Fuel System Type:
Decide between mechanical fuel injection for simplicity and remote repairability or electronic injection for emissions control and advanced features.
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Maintenance Considerations:
Look for engines that are easy to maintain, with accessible components for routine checks and servicing.
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Sound and Vibration Dampening:For comfort, prioritize engines with good sound deadening and vibration isolation, especially if you value a quiet experience at sea.