Used Yanmar 3GMD 20HP Marine Diesel Engine
$1,492.00
In Stock
Description
Used Yanmar 3GMD 20hp Marine Diesel Engine
Yanmar 3GMD Three Cylinder Seawater Cooled Marine Diesel Engine Package With Gearbox, Control Panel & Wiring Loom. Taken in part exchange against a new Beta Marine engine in good running order. Our workshops have test run the engine for 2 hours with no faults found. It starts well from cold and oil pressure is good, now serviced and painted, ready to fit.
Manufacturer: Yanmar
Model: Yanmar 3GMD 20hp Marine Diesel Engine Package
Year built: 1984
Power: 20
Motor: 15
Fuel: Diesel
Used Yanmar 3GMD 20HP Marine Diesel Engine Specs
| Brand | Yanmar |
| Full Model Code | 3GMD ('D' denotes Original Direct Raw-Water Cooling Layout) |
| Country of Origin | Japan |
| Engine Family/Series | Yanmar Early Generation GM Cruising Line |
| Engine Type & Configuration | Inline 3-Cylinder, 4-Stroke, Compact Marine Diesel |
| Aspiration & Induction System | Naturally Aspirated, Indirect Swirl Pre-Chamber Layout |
| Displacement | 0.864 Liters / 864 cc |
| Bore x Stroke | 72.0 mm x 71.0 mm |
| Cylinder Count & Valves per Cylinder | 3-Cylinder, 2-Valves per Cylinder (6 Valves Total) |
| Compression Ratio | 23.0:1 |
| Rated Power / Horsepower | 20 HP (14.7 kW) @ 3400 RPM Continuous / 22.5 HP Max |
| Maximum Engine Speed / Rated RPM | 3400 RPM |
| Maximum Torque | 54 Nm @ 2400 RPM |
| Fuel System & Injection Type] | Mechanical Plunger In-line Pump, Indirect Pre-combustion Chambers |
| Governor Type | Mechanical Centrifugal Governor Assembly |
| Electrical System Voltage & Alternator Output | 12V System, 35 Amp or 55 Amp Alternator Options |
| Starting System | 12V Electric Starter Motor with Manual Emergency Over-Center Decompression System |
| Cooling System Type | Direct Seawater Cooled Circuit (Raw water pathway configuration) |
| Lubricating Oil Capacity / Oil Pan Capacity | 2.6 Liters |
| Exhaust Diameter / Exhaust System Type | 45 mm / Water-Injected Wet Exhaust Cast Injection Bend |
| Flywheel & Flywheel Housing Size | Modular Face Interface tailored directly for Yanmar KM3 Series Mechanical Gearboxes |
| Dry Weight without Marine Gear | 122 kg (269 lbs) |
| Dimensions L x W x H | 685 mm x 445 mm x 525 mm |
| Emission Certifications & Duty Rating | Pre-Tier Global Control Standards / Auxiliary Yacht Pleasure Duty Layout |
| Application | Classic 1980s fiberglass production cruising boats, small wooden yawls, and inland water canal cruisers (Typical hull lengths 26-33 feet, engineered for straight shaft configuration lines). |
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