Lombardini LDW702M Inboard Shaft Marine Diesel Engine Package

Description

Experience reliable inboard propulsion in compact bilges with the Lombardini LDW702M Inboard Shaft Package. This 4-Stroke Inline-2 naturally aspirated diesel outputs 18BHP at 3,600 RPM across a 0.7L displacement. Internal FOCS unit pump injectors require clean fuel without water sediment. Driveline shaft couplings require careful alignment during setup to minimize vibration through hull stringers.

Rigid gray cast iron forms the parent-bore cylinder block to resist hull deflection stresses, while an aluminum cylinder head sheds surplus engine mass. An overhead camshaft actuates internal FOCS unit pump injectors without external high-pressure fuel pipes. Electrical circuits center on a 12V negative ground system backed by a 1.2 kW starter motor and 40A marine alternator. Dry engine mass measures 161 lbs within an engine stance measuring 18.7in long, 18.5in wide, and 20.8in high.

Key Features of Lombardini LDW702M

Commercial boat owners buy Lombardini LDW702M inboard shaft packages to power coastal fishing launches and small cruising sailboats. This engine platform supports commercial workboat diesel engine repower installations that demand compact dimensions and dependable mechanical controls.

• FOCS unit pump injectors inside the cylinder head eliminate external high-pressure fuel pipes.
• Natural aspiration keeps machinery space ambient temperatures cool during long transit cycles.
• Aluminum cylinder head castings shed thermal heat and minimize vessel transom draft.
• Gear-driven neoprene impeller pumps circulate seawater through closed tubular heat exchangers.
• Technodrive TMC 40P mechanical transmission provides dependable cone clutch engagement.
• Continuous P1 commercial duty rating supplies 16BHP at 3,300 RPM for sustained cruising.
• Intermittent P3 rating yields 18BHP at 3,600 RPM for strong docking control in tidal currents.

Dynamometer Bench Test Load Performance

Dynamometer load testing confirms continuous output of 16BHP at 3,300 RPM and intermittent peak power of 18BHP at 3,600 RPM under load. Naturally aspirated exhaust gas pyrometer readings remain below 1,120°F before raw seawater injection. Coolant temperatures stabilize at 180°F through copper-nickel heat exchanger tubes. Crankcase lube oil pressure tracks at 48 PSI at continuous rated speed. Crankshaft journal runout remains below 0.0003in TIR across transmission output flanges under static driveline tilt angles up to 15°.

Field Operation Shaft Service Protocols

Shift levers actuate with positive mechanical detents requiring under 3 lbs of throw force at the helm. Do not install this 18BHP twin-cylinder package in heavy displacement steel barges or commercial vessels requiring high continuous bollard pull towing capacities.

• Drain engine lube oil and replace spin-on lube filters every 250 operating hours.
• Inspect heat exchanger sacrificial zinc anodes and check gearbox oil levels every 100 operating hours.
• Replace primary fuel filter elements and check raw seawater pump impellers every 500 operating hours.

Commercial Warranty Factory Shipping Crate

Lombardini Kohler protects this assembly with a 2-Year limited marine warranty. The complete wooden shipping crate includes the 0.7L engine, Technodrive TMC 40P gearbox, flexible rubber engine mounts, 12V 40A alternator, instrument panel with tachometer, wiring harness, fluid senders, and official workshop maintenance manuals.