Quick Overview

YEBISU marine diesel engines are purpose-built to perform as a reliable “Work Horse” in the tough and demanding commercial marine operating conditions. These 2, 3 and 4-cylinder direct injection type 4-cycle diesel engines with a bore diameter of 105 mm and long stroke of 118 mm have a displacement of 2.043, 3.065 and 4.087 litres respectively delivering between 28 and 107 mhp at very low rated rpm of 2000-2200, while maintaining the high-rise torque characteristics consistent throughout the operating range without compromising the fuel efficiency. These rugged engines made of solid cast iron block with alloy steel crankshaft and forged steel connecting rods are externally complemented with application-sized (belt driven) sea water pump, custom designed and specially built marine grade heat exchanger, lub oil, fuel cooler and water-cooled exhaust manifold, all first of its kind in their class ensuring maximum life. Extreme care has been taken to keep the engines simple in terms of construction, operation and maintenance keeping in view the type of boats on which these engines will be installed.


Customer name : Mr.Antony Michael Nicholas
Location : Tharuvaikulam, Thoothukudi, Tamil Nadu
Boat Name : El Shadai

Customer name : Mr.Sunesh
Location : Kadiapattinam, Kanyakumari, Tamil Nadu
Boat Name : Child Thresa


Make Yebisu Marine Diesel Engine
Engine Model 4MP70
Engine Type Water Cooled, Vertical, 4 Stroke Diesel Engine
Number of Cylinders 4, Inline
Bore X Stroke (mm) 105×118
Displacement (cc) 4087
RatedPower (at flywheel) (kWmhp) 52.1 (70)
Engine Rated (RPM) 2200
Compression Ratio 18.5:1
Firing Order 1-3-4-2
Air Intake System Natural Aspiration
Valve Clearance Intake / Exhaust (mm) 0.3 / 0.4
Cooling System Fresh water-cooling, System (with Heat Exchanger)
Volume of Coolant (in jacket and Cooler) (Lts) 15
Lubrication System Wet System, Forced Lubrication by Gear Pump
Volume of Lubricating Oil (Engine) (Lts) Max 15
Starting System Electrical Starting, DC 12V 2.8 kW
Alternator DC 12V 36Ah
Size of Flywheel and Housing SAE #3 & SAE #10
Direction of Rotation [crankshaft] Counterclockwise Viewed from Flywheel Side
Operating Side On the Left, When Viewed From Flywheel
Dimensions: Length × Width × Height (mm) 1175×800×1100
Engine Dry Height (kgs) 485