Yanmar 4JH80 Marine Diesel Engine – 80hp For Sale
The Yanmar 4JH80 Marine Diesel Engine is a high-powered, 4-cylinder, 4-stroke marine engine that delivers 80hp at 3200 rpm. Built for sailboats, yachts, and light-duty commercial vessels, the 4JH80 is part of Yanmar’s advanced JH-series engines, featuring common rail direct injection (CR) technology. This engine delivers superior power, fuel efficiency, and lower emissions, making it ideal for environmentally-conscious boaters.
The 4JH80 is equipped with common rail fuel injection, which ensures precise fuel delivery, improving combustion efficiency and reducing exhaust emissions. The engine also features a freshwater cooling system via a heat exchanger, ensuring stable engine temperatures and corrosion protection for long-term durability. Compact in size, the 4JH80 is suitable for installation in a variety of boats with tight engine compartments.
Compliant with strict environmental standards such as EPA Tier 3 and EU RCD Stage II, the Yanmar 4JH80 is a robust, fuel-efficient choice for those seeking reliability, performance, and reduced emissions in their marine engine.
Technical Specifications:
- Engine Model: 4JH80
- Engine Type: 4-cylinder, 4-stroke, vertical water-cooled diesel engine
- Displacement: 2.2 liters (2190 cc)
- Bore x Stroke: 84 mm x 90 mm
- Power Output: 80hp (58.8 kW) at 3200 rpm
- Compression Ratio: 18.9:1
- Fuel System: Common rail direct injection (CR)
- Cooling System: Freshwater cooling with a heat exchanger
- Alternator Output: 12V – 125A
- Lubrication System: Forced lubrication by gear pump
- Oil Capacity: 7.4 liters
- Starting System: Electric start
- Direction of Rotation: Counterclockwise (viewed from flywheel)
- Weight: 192 kg (without gearbox)
- Gearbox Options: KM35A, KMH4A (mechanical or hydraulic)
- Reduction Ratios: 2.14:1, 2.61:1 (KM35A) or 2.20:1, 3.12:1 (KMH4A)
- Exhaust System: Water-cooled, with wet exhaust manifold
- Fuel Consumption: Approx. 8.0 liters/hour at cruising speed
- Emission Compliance: EPA Tier 3, EU RCD Stage II
Key Features:
- Common Rail Direct Injection (CR): Provides better fuel efficiency, lower emissions, and higher performance.
- Freshwater Cooling System: Prevents internal corrosion and maintains optimal engine temperature.
- Low Noise and Vibration: Ensures smooth, quiet engine operation for enhanced onboard comfort.
- Compact Design: Fits easily into small engine compartments, ideal for a wide range of vessels.
- Fuel Efficiency: Reduces operating costs with lower fuel consumption at cruising speeds.
- Environmental Compliance: Meets stringent EPA Tier 3 and EU RCD Stage II emission standards.
Yanmar is a leading manufacturer of marine diesel engines, known for its commitment to reliability, fuel efficiency, and environmental sustainability. The Yanmar 4JH80 is part of the innovative JH series, offering advanced common rail technology to meet modern performance and environmental needs.
Yanmar provides a range of transmission options tailored to different marine applications. The KM4A-2 is a mechanical transmission featuring a servo cone clutch and multiple gear ratios, making it a reliable choice for sailboats. The KMH4A offers hydraulic control for smooth shifting, ideal for inboard engines in larger vessels. Additionally, the ZF25A and ZF30M are high-performance mechanical gearboxes used in both recreational and light commercial marine applications, ensuring durability and precision. For sailboats, the SD60 SailDrive provides smooth, low-vibration propulsion and is compatible with most Yanmar engines, except for the 4JH110. Lastly, bobtail engines are fully assembled replacements for existing inboard and stern drive engines, complete with fuel, electrical, cooling, exhaust, and engine mounts, making them a comprehensive solution for repowering boats.
These transmission and engine options provide a wide range of solutions for both sailing and motorized vessels
