Lombardini LDW702SD Compact Marine Saildrive Diesel Package
Description
Harness compact diesel auxiliary propulsion through the Lombardini LDW702SD Compact Marine Saildrive Package to power cruising sailboats. The 0.7-liter twin-cylinder diesel generates 18 brake horsepower at 3600 RPM. Unit pump injection burns just 0.9 gallons per hour at cruising speeds, delivering exceptional fuel range while sailing across remote archipelagoes.
The rigid gray cast iron cylinder block matches an aluminum cylinder head with an integrated overhead camshaft. The saildrive lower leg features a marine-grade cast aluminum housing protected by multi-coat epoxy paint. A cupronickel heat exchanger protects internal cooling jackets. Total dry weight reaches 271 lbs. The engine sump holds 1.9 quarts with 5/16-inch fuel barbs.
Key Features of Lombardini LDW702SD
Cruising sailors buy Lombardini LDW702SD inboard engine systems to eliminate traditional shaft packing drips and propeller shaft misalignment issues. The saildrive configuration drops through the hull sole, providing quiet vibration-free motoring during long ocean calms.
- Saildrive lower leg units eliminate inboard shaft logs, strut bearings, and mechanical stuffing boxes
- Unit pump injectors deliver precise mechanical fuel metering without sensitive electronic control units
- Overhead camshaft architecture eliminates pushrod flex to ensure whisper-quiet cruising operation
- Lombardini LDW702SD Deluxe instrument panels feature audible alarms, hour meters, and key switches
- Double diaphragm hull seal gaskets feature integrated water intrusion sensors to protect vessel safety
- Cupronickel cooling tubes resist seawater scaling with internal sacrificial zinc pencil anodes
- Saildrive leg water intakes pull cooling water deep below wave turbulence to prevent air ingestion
- Top-access lube filters permit routine maintenance without spilling motor oil into structural hull liners
Torque Performance Thermal Limits
Internal unit injectors generate 30 lb-ft of torque at 2200 RPM, spinning two-blade folding propellers with ease. Internal wax thermostats hold coolant temperatures between 160°F and 180°F. Seawater heat exchangers discharge 1,200 BTU per minute through the saildrive exhaust hub, maintaining a lean 250 g/kWh fuel efficiency rate.
Hull Aperture Saildrive Clearances
The saildrive leg passes through a dedicated fiberglass hull bed aperture adhering to ABYC P-1 standards. Heavy rubber clamping rings secure the drive leg to structural hull beds without transmitting engine vibration. Saildrive fairing plates glue flush against the outer hull skin to ensure smooth hydrodynamics.
Drive Operation Restricted Roles
Mechanical control cables afford smooth clutch engagement when shifting between forward and reverse during harbor mooring. Visual inspection of the saildrive hull diaphragm sensor must occur before every offshore passage. This saildrive package is not engineered for planing hulls, dry exhaust installations, or operation beyond 3600 RPM.
- Inspect saildrive diaphragm integrity sensor lights each shift
- Drain fuel water separator collection bowls every 50 hours
- Replace saildrive gear lubricant and zinc anodes every 12 months
Warranty Statement Package Manifest
Cruising owners receive a 2-Year limited factory warranty covering base engine and saildrive leg components. The wooden export container holds the marine engine, complete saildrive leg unit, hull mounting bed frame, Deluxe instrument panel, wiring loom, and installation manual.
Lombardini LDW702SD Compact Specs
| Manufacturer / Brand | Lombardini Marine (Kohler Engines) |
| Model Designation | LDW702SD Compact Saildrive Package |
| Engine Type | 4-Stroke Compact Marine Diesel |
| Cylinder Configuration | Inline-2 |
| Total Displacement | 0.7 Liter (42 cu in) |
| Bore x Stroke | 75.0 x 77.6 mm (2.95 x 3.06 in) |
| Aspiration & Charge Air | Naturally Aspirated |
| Cooling System Architecture | Tubular Heat Exchanger Closed Circuit with Raw Seawater Saildrive Leg Ingestion |
| Continuous Power Rating (P1) | 16 BHP (12 kW) @ 3,300 RPM |
| Maximum / Intermittent Power (P3/P4) | 18 BHP (13 kW) @ 3,600 RPM |
| Fuel Injection Platform | Mechanical Unit Pump Injector System (FOCS Unit Injector in Cylinder Head) with Mechanical Governor |
| Cylinder Head Metallurgy | Cast Iron Engine Block with Aluminum Alloy Cylinder Head and Overhead Camshaft (OHC) |
| Cylinder Liners | Cast Iron Engine Block with Integrated Parent Bores |
| Flywheel Housing & Flywheel | Dedicated FOCS Saildrive Intermediate Housing and Flexible Damper |
| Electrical System & Ground | 12V Negative Ground Marine Electrical System |
| Starter & Alternator Output | 12V 1.2 kW Electric Starter / 12V 40A Marine Alternator |
| Lube Oil Sump Capacity | 1.6 Liters (0.42 US gal) |
| Engine Coolant Capacity | 3.5 Liters (0.92 US gal) |
| Dry Weight (excl. gearbox) | 73 kg (161 lbs) |
| Overall Dimensions (L x W x H) | 476 x 469 x 528 mm (18.7 x 18.5 x 20.8 in) |
| Emissions Certification | RCD 2 (Directive 2013/53/EU) / EPA Tier 3 Marine / EU Stage V |
| Fuel Compatibility | Ultra-Low Sulfur Diesel (ULSD No. 2), Automotive Diesel (EN 590), B7 Biodiesel |
| Transmission / Outdrive Compatibility | Packaged with Lombardini S-Drive (Technodrive Twin Disc SeaProp 60) Saildrive Lower Unit and Gasket Bed |
| Factory Warranty Period | Lombardini Kohler 2-Year Limited Marine Manufacturer Warranty |
| Application Research | Small sailing cruisers (22-28 ft), club racing yachts, day sailers, and production cruising pocket sloops needing hydrodynamic saildrive efficiency. |
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