Volvo Penta D1-13 Bobtail Inboard Marine Diesel Engine

Description

Satisfy international harbor emissions standards via Volvo Penta D1-13 Bobtail Engine packages, designed to repower small cruising sailboats and auxiliary daysailers up to 26 feet. Displacing 510 cc across two cylinders, this naturally aspirated diesel generates 12.2 horsepower at 3,200 RPM. Cam-driven mechanical unit injectors produce clean fuel atomization, low smoke emissions, and smooth torque throughout the operating band.

High-tensile gray cast iron forms the monolithic cylinder block, equipped with induction-hardened parent cylinder walls that resist scuffing. A fresh water cooling system integrates an aluminum heat exchanger housing with a cupronickel tube bundle and bronze sea water pump. Dry bobtail weight is 212 lbs, supported by a 2.0-quart stamped oil pan, SAE 6 housing, and 0.312-inch hose barb fuel fittings.

Key Features of Volvo Penta D1-13

Cruising sailors buy Volvo Penta D1-13 inboard engine packages to replace obsolete raw-water cooled engines inside compact sailboat engine compartments. The smooth two-cylinder configuration delivers dependable auxiliary propulsion without adding excess weight to the boat structure.

• 12.2 horsepower rating propels displacement sailing craft at hull speed in head seas.
• 115-amp 12-volt alternator with built-in charging sensor recharges house battery banks.
• Rigid cast iron engine block suppresses vibration across low and high RPM ranges.
• Cupronickel tube heat exchanger protects cylinder jackets from salt scale accumulation.
• Electric glow plugs initiate rapid combustion down to freezing bilge temperatures.
• Volvo Penta D1-13 auxiliary efficiency lowers fuel burn on extended coastal passages.
• Flexible rubber engine mounts dampen two-cylinder reciprocating pulses to protect stringers.
• Front-mounted sea water pump allows quick neoprene impeller replacement through hatch doors.

Combustion Dynamics Thermal Capacities

Coolant thermostats regulate internal temperatures between 168°F and 182°F under continuous motoring operations. The two-cylinder block develops 22 lb-ft of torque at 2,200 RPM, giving small displacement sailboats power to punch through tidal headlands and harbor chop. Rated for M4 pleasure craft service, thermal heat rejection transfers 9 kW into raw water cooling circuits. Specific fuel consumption averages 245 g/kWh, burning about 0.22 gallons per hour at standard yacht cruising speeds across open coastal waters.

Exhaust Integration Bay Clearances

A water-injected exhaust elbow attaches to 1.75-inch wet exhaust hose, meeting ABYC P-1 standards for auxiliary sailboats. Mounting brackets adjust across 14-inch to 16-inch stringer centers, preserving 2.0 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 linkages 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, commercial trawlers, 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 lubricating oil and spin-on filter elements every 200 hours.

Warranty Terms Package Manifest

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