Lombardini LDW1404M Inboard Shaft Marine Diesel Engine Package

Description

Certified RCD 2 and EPA Tier 3 emissions compliance makes the Lombardini LDW1404M Inboard Shaft Package a prime repower choice for harbor vessels. This 4-Stroke Inline-4 naturally aspirated diesel generates 40BHP at 3,600 RPM across a 1.4L displacement. Internal unit injectors require clean fuel without particulate contamination. Operators must prime fuel supply systems after filter cartridge exchanges.

Monobloc cast iron constructs the parent-bore cylinder block to resist deck torsion, while an aluminum alloy cylinder head lowers overall engine weight. Overhead camshaft architecture operates internal FOCS unit injectors to eliminate external high-pressure fuel lines. A 12V negative ground system features a 1.6 kW starter motor and 40A marine alternator. Dry engine mass measures 254 lbs within a chassis envelope measuring 26.4in long, 18.5in wide, and 21.1in high.

Key Features of Lombardini LDW1404M

Commercial launch operators buy Lombardini LDW1404M shaft drive packages to modernize canal workboats and harbor service tenders. This drivetrain manages commercial workboat diesel engine repower installations where a smooth four-cylinder firing order reduces hull resonance.

• Patented FOCS unit pump injectors inside the cylinder head eliminate external high-pressure pipes.
• Natural aspiration removes turbocharger complexity and keeps engine compartment temperatures low.
• Aluminum alloy cylinder heads improve heat conduction and minimize vessel displacement draft.
• Closed-circuit tubular heat exchangers employ neoprene seawater pumps for temperature stability.
• Technodrive Twin Disc TMC 60P transmission provides positive mechanical cone clutch engagement.
• Continuous P1 commercial rating supplies 35BHP at 3,300 RPM for steady commercial towing.
• Intermittent P3 rating yields 40BHP at 3,600 RPM for fast maneuvering in tidal channels.

Dynamometer Bench Test Load Performance

Dynamometer cell evaluations verify continuous output of 35BHP at 3,300 RPM with peak ratings reaching 40BHP at 3,600 RPM under load. Naturally aspirated exhaust gas pyrometer readings stay below 1,150°F before entering the water-jacketed exhaust riser. Closed-circuit cooling liquid holds steady at 180°F through copper-nickel tube bundles. Crankcase lube oil pressure maintains 50 PSI at cruising RPM. Crankshaft journal runout remains below 0.0003in TIR across transmission output flanges at static shaft downward angles up to 15°.

Field Operation Shaft Service Protocols

Shift levers actuate with positive mechanical detents requiring under 4 lbs of throw force at the helm station. Do not install this 40BHP naturally aspirated package in fast planing commercial interceptors or patrol craft that require high power-to-weight ratios over 100BHP.

• Drain engine lube oil and replace spin-on oil 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 1.4L engine, Technodrive TMC 60P gearbox, flexible rubber engine mounts, 12V 40A alternator, instrument panel with tachometer, wiring harness, fluid senders, and official workshop maintenance manuals.