The EMD710 is a series of two-stroke medium-speed diesel engines designed and manufactured by Electro-Motive Diesel (formerly the Electric Power division of General Motors). It was launched in 1983 and officially entered mass production in 1985. It is mainly used in railway locomotives, ship propulsion, oil field drilling and stationary power generation units. It is the successor to the EMD 645 series and one of the most widely used high-power medium-speed diesel engines in the world.

EMD 710 Engine - Basic Technical Specifications Overview

Parameter Item	Value	Remarks
Bore	9+1⁄16 inches (230.19 mm)	Same as EMD 645 Series
Stroke	11 inches (279.4 mm)	1 inch (25 mm) longer than EMD 645 Series
Displacement per cylinder	710 cubic inches (11.63 liters)	Origin of the series name
Compression Ratio	15.3:1 ~ 18.0:1	Slightly varies by model
Idle Speed	200 rpm	Standard setting
Maximum Speed	900 ~ 950 rpm	Varies depending on model
Power per cylinder	203 kW (272 hp)	Basic output level
Cooling System	Liquid-cooled	Forced circulation
Lubrication System	Wet sump	High-pressure lubrication
Cylinder Block Material	Welded structural steel	Integrated with flat, formed, rolled structural steel components and forged steel parts
Cylinder Head Material	Cast iron	Individual cylinder head for each cylinder