Sole Mini 33 Compact Inboard Sailboat Diesel Engine

Description

Command steady coastal sailing auxiliary power using Sole Mini 33 Sailboat Diesel Engine packages, designed to repower performance cruising sailboats. This three-cylinder 1,318-cc diesel engine generates 31 horsepower at 3,000 RPM. Swirl pre-combustion chamber architecture combined with mechanical injection provides clean combustion, minimal carbon accumulation, and smooth propulsion during offshore sailing and coastal passages.

Built from dense gray cast iron, the engine block features induction-hardened parent-bore cylinders that resist thermal distortion. An integrated heat exchanger combines a cupronickel tube stack with a sacrificial zinc pencil and bronze sea pump. The dry engine weighs 293 lbs without transmission, equipped with a 4.2-quart oil sump, SAE 5 bell housing, and 0.312-inch push-on fuel barb connectors.

Key Features of Sole Mini 33

Cruising sailors buy Sole Mini 33 inboard engine models to repower heavy displacement 30-foot to 36-foot sailing yachts. The high displacement three-cylinder block delivers generous torque at moderate RPM, maintaining hull speed without excessive vibration.

• 31 horsepower output drives heavy displacement cruising hulls through steep coastal waves.
• 50-amp 12-volt alternator restores starter and domestic battery banks while motoring.
• 1.3-liter displacement provides strong low-end torque for powering into head seas.
• Cupronickel tube heat exchanger protects cylinder jackets from salt scale accumulation.
• Top-mounted oil filter allows mess-free servicing through narrow sailboat access doors.
• Sole Mini 33 sailboat propulsion provides quiet operation during overnight motor-sailing.
• Rubber shear mounts suppress engine harmonic frequencies across normal cruising RPM bands.
• Mechanical shutoff cable lever provides independent engine shutdown during electrical faults.

Combustion Dynamics Thermal Capacities

Coolant thermostats regulate internal engine temperatures between 170°F and 185°F under continuous motoring loads. The engine generates 53 lb-ft of torque at 2,000 RPM, giving skippers substantial propeller grip when docking in crosswinds. Rated under M4 pleasure craft duty cycles, thermal rejection transfers 22 kW into the raw water cooling stream. Brake specific fuel consumption averages 235 g/kWh, yielding near 0.52 gallons per hour at standard yacht cruising speeds in open waters.

Exhaust Integration Bay Clearances

A water-jacketed exhaust riser mates to 2.0-inch wet exhaust hose, meeting ABYC P-1 standards for auxiliary marine installations. Engine brackets adjust across 16-inch to 19-inch stringer beds, preserving two inches of vertical space below the oil pan. Flexible elastomer feet cushion torsional movement to protect boat frames.

Maintenance Protocols Operating Boundaries

Standard push-pull mechanical cables provide direct, positive command over injection rack and transmission levers. Skippers verify raw water flow, inspect sacrificial zincs, and clean sea strainers prior to sailing. This auxiliary diesel is not engineered for high-speed planing launches, commercial trawlers, or raw water cooled bilges without fresh water heat exchangers.

• Inspect raw water strainer and belt tension before each shift.
• Replace sacrificial heat exchanger zinc pencils every 150 hours.
• Renew crankcase lubricating oil and filter every 200 hours.

Warranty Protection Crate Inventory

Pleasure craft installations receive 3-Year limited warranty coverage against casting flaws and internal mechanical defects. The crated package includes the bobtail engine, flexible mounts, digital helm instrument panel, five-meter extension wiring harness, oil drain pump, and detailed operator instruction manual.