Lombardini KDI1903M-MP Inboard Shaft Marine Diesel Engine Package

Description

Need a compact inboard propulsion package that fits narrow bilge stringers without structural alterations? The Lombardini KDI1903M-MP Inboard Shaft Package produces 42BHP from an Inline-3 1.9L naturally aspirated diesel at 2,800 RPM. Mechanical fuel injection systems resist harsh salt fog without electronic failures. The mechanical cone-clutch gearbox demands accurate alignment checks during shaft coupling setup.

Monobloc gray iron castings provide high structural rigidity across parent-bore cylinder walls without wet sleeve shifting risks. Overhead camshaft timing synchronizes 4-Valve per cylinder iron heads for smooth gas flow. Electrical systems use a 12V negative ground network equipped with a 2.0 kW starter and 100A alternator. Dry engine mass measures 474 lbs within a base envelope measuring 27.2in long, 21.3in wide, and 25.2in high holding 2.25 gal of oil.

Key Features of Lombardini KDI1903M-MP

Commercial boat owners buy Lombardini KDI1903M-MP shaft drive packages to repower small workboats and aquaculture skiffs. This packaged drivetrain executes commercial workboat diesel engine repower operations while keeping mechanical systems simple.

• Mechanical direct fuel injection provides reliable cold starts and low diesel consumption.
• Natural aspiration minimizes thermal loading within small unventilated marine motor spaces.
• Technodrive Twin Disc TMC 40P mechanical gearbox uses helical gears for quiet propulsion.
• Monobloc 4-Valve cast heads promote thorough combustion across all three parent bores.
• Neoprene seawater pump impellers drive cooling fluid through corrosion-resistant heat exchangers.
• P1 continuous duty commercial rating produces 38BHP at 2,600 RPM for all-day towing.
• Intermittent P3 rating yields 42BHP at 2,800 RPM for fast harbor transits.

Dynamometer Test Bench Load Profiles

Factory dynamometer runs confirm continuous output of 38BHP at 2,600 RPM alongside intermittent ratings of 42BHP at 2,800 RPM. Exhaust gas pyrometers read 1,180°F under maximum continuous load conditions without soot buildup. Internal fresh coolant stabilizes at 180°F through the closed tubular heat exchanger core. Engine lube oil pressure maintains 52 PSI at wide-open throttle. Crankshaft journal runout remains below 0.0004in TIR when mounted at static driveline inclination angles up to 15°.

Field Operation Shaft Service Guidelines

Transmission shift levers actuate with positive mechanical detents requiring under 5 lbs throw effort. Do not install this 42BHP inboard package in commercial offshore survival craft or deep-sea trawlers that require extreme reverse torque and continuous multi-ton bollard pull.

• Drain engine lube oil and replace spin-on lube filters every 250 operating hours.
• Replace sacrificial cooling zinc anodes and inspect transmission oil level every 100 operating hours.
• Change primary fuel filter elements and check raw water impellers every 500 operating hours.

Factory Warranty Packaged Equipment Manifest

Lombardini Kohler provides a 2-Year or 2,000-Hour limited commercial marine warranty. The complete wooden shipping crate includes the fully assembled engine, Technodrive transmission, torsional drive plate, flexible isolation mounts, 12V 100A alternator, instrument panel with tachometer, wiring harness, and factory operational manuals.