Sole Mini 74 Turbocharged Sailboat Engine Gearbox Package

Description

Satisfy international harbor exhaust regulations via Sole Mini 74 Sailboat Diesel Engine packages, built for heavy displacement sailboats, charter catamarans, and coastal cruisers. This four-cylinder 3.3-liter turbocharged diesel generates 65 horsepower at 2,500 RPM. Swirl pre-combustion chamber technology provides smooth combustion balance, minimal vibration, and clean exhaust emissions during extended motoring through quiet anchorages.

Heavy-duty cast iron forms the monolithic cylinder block, utilizing induction-hardened parent cylinder walls to resist wear during long voyages. The fresh water cooling system integrates a tubular cupronickel heat exchanger, engine oil cooler, and bronze sea water pump. Dry weight with gearbox sits at 683 lbs, featuring an eight-quart baffled oil sump, SAE 4 bell housing, and 0.375-inch fuel line fittings.

Key Features of Sole Mini 74

Cruising skippers buy Sole Mini 74 inboard engine units to repower 42-foot to 50-foot offshore sailboats requiring high displacement torque at moderate RPM. The robust four-cylinder engine swings large diameter propellers with steady thrust to maintain hull speeds in heavy seas.

• 65 horsepower rating pushes heavy displacement sailing vessels through steep ocean head seas.
• 120-amp 12-volt alternator delivers high charging current to ship service battery systems.
• 3.3-liter engine displacement generates massive low-RPM torque with minimal cylinder wear.
• Water-cooled turbocharger housing controls engine room heat buildup during long passages.
• Cupronickel tube bundle resists salt corrosion and allows straightforward mechanical rod cleaning.
• Sole Mini 74 sailboat stamina ensures dependable auxiliary propulsion on long crossings.
• Heavy-duty flexible mounts absorb low-frequency engine harmonics to protect yacht interiors.
• Front-mounted raw water pump facilitates prompt impeller inspection from cabin access panels.

Combustion Dynamics Thermal Capacities

Coolant thermostats regulate internal temperatures between 172°F and 186°F under continuous turbocharged loads. The engine develops 155 lb-ft of torque at 1,700 RPM, giving ocean sailing yachts exceptional propeller wash for docking in heavy wind. Rated for M4 pleasure craft service, thermal heat rejection transfers 48 kW into raw sea water circuits. Brake specific fuel consumption averages 220 g/kWh, burning approximately 1.10 gallons per hour at steady cruising speeds in open waters.

Exhaust Integration Bay Clearances

A water-injected exhaust elbow attaches to 3.0-inch wet exhaust hose, meeting ABYC P-1 standards for ocean cruising yachts. Engine mounting feet adjust across 20-inch to 24-inch stringer centers, leaving 2.5 inches of clearance below the oil pan. Flexible elastomer mounts isolate engine vibration from the yacht hull.

Service Schedules Application Constraints

Direct mechanical Morse cables connect helm control levers straight to governor and gearbox linkages for immediate command. Operators inspect raw water strainers, check fluid levels, and examine belt tension before casting off lines. This engine package is not engineered for high-speed planing launches, commercial dredging scows, or raw water cooled bilges without fresh water heat exchangers.

• Inspect sea water intake strainer before each shift.
• Inspect and replace sacrificial heat exchanger zincs every 150 hours.
• Change engine lubricating oil, transmission fluid, and filters every 200 hours.

Warranty Terms Package Manifest

Recreational vessel owners receive 3-Year limited warranty protection on engine castings and mechanical transmission components. The delivery crate contains the complete engine-gearbox package, vibration isolators, digital instrument cluster, five-meter extension harness, oil extraction pump, and a complete factory workshop manual.