Sole SK-60 Compact Commercial Diesel Engine Gearbox Package

Description

Eliminate mechanical downtime risks using the Sole SK-60 Commercial Diesel Engine, engineered to power small commercial fishing hulls, workboats, and harbor launches. Based on an industrial Kubota block, this four-cylinder 2.4-liter naturally aspirated diesel generates 59 horsepower at 2,700 RPM. Mechanical indirect injection delivers clean combustion, quiet operation, and dependable torque during continuous harbor shifts and coastal transits.

Rigid gray cast iron forms the monolithic cylinder block, featuring induction-hardened parent-bore cylinder walls that resist continuous towing wear. The marine fresh water cooling unit integrates a cupronickel tube stack, engine oil cooler, and bronze sea water pump. Dry package weight sits at 540 lbs with gearbox, supported by a seven-quart stamped oil pan, SAE 4 housing, and 0.375-inch fuel line connections.

Key Features of Sole SK-60

Workboat skippers buy Sole SK-60 inboard engine packages to replace aging engines in lobster boats and commercial work skiffs. The matched mechanical or hydraulic marine transmission delivers positive forward and reverse thrust without slip under continuous maneuvering cycles.

• 59 horsepower rating provides dependable displacement thrust against river currents.
• 90-amp 12-volt alternator satisfies heavy battery charging demands on working craft.
• Mechanical inline fuel pump functions without sensitive microprocessors or electronic modules.
• Swirl pre-combustion chambers ensure low exhaust odor in crowded harbor basins.
• Cupronickel tube heat exchanger resists saltwater corrosion and scale accumulation.
• Sole SK-60 workboat reliability prevents operational delays on commercial schedules.
• Resilient rubber engine mounts dampen four-cylinder reciprocating forces to protect stringers.
• Accessible front-mounted sea water pump allows quick neoprene impeller replacement.

Combustion Dynamics Thermal Capacities

Coolant thermostats regulate internal temperatures between 172°F and 186°F under continuous commercial operations. The four-cylinder block develops 122 lb-ft of torque at 1,700 RPM, giving small workboats substantial wheel grip for towing work punts. Rated under M2 continuous commercial marine duty, heat rejection transfers 41 kW into raw water cooling circuits. Specific fuel consumption averages 222 g/kWh, consuming about 0.88 gallons per hour at standard commercial cruising speeds under loaded displacement.

Exhaust Integration Bay Clearances

A water-injected exhaust elbow attaches to 2.5-inch wet exhaust hose, meeting ABYC P-1 standards for inboard commercial vessels. Engine mounting brackets adjust across 18-inch to 22-inch stringer centers, preserving 2.5 inches of clearance below the oil pan. Flexible elastomer mounts absorb vibration from the hull.

Service Schedules Application Constraints

Direct mechanical Morse cables connect helm control levers straight to governor and gearbox selectors for immediate response. Operators inspect raw water strainers, check oil levels, and monitor belt tension before getting underway. This engine package is not engineered for offshore planing hulls, surface piercer drives, or raw water cooled bilges without fresh water heat exchangers.

• Inspect sea water intake strainer before each shift.
• Inspect and clean heat exchanger zincs every 150 hours.
• Change engine lube oil, gear oil, and filters every 250 hours.

Warranty Terms Package Manifest

Commercial fleet buyers receive 2-Year or 2,500-Hour limited warranty protection on base castings and mechanical gear components. The shipping crate contains the engine-gearbox package, vibration isolators, digital instrument cluster, five-meter extension wiring harness, oil extraction pump, and a complete technical service manual.