The Mitsubishi KE engine is a range of engines produced by Mitsubishi Motors

Mitsubishi Motors

is a multinational automaker headquartered in Minato, Tokyo. In 2009 it was the fifth-largest Japan-based automaker and the 17th-largest in the world measured by production...

 during the 1960s and early 1970s. They were extensively used in the various Colt

Mitsubishi Colt

The Mitsubishi Colt is a vehicle built by Mitsubishi Motors since 1962. It was first introduced as a series of kei cars and subcompact cars in the 1960s, and then as the export version of the Mitsubishi Mirage hatchback in the 1980s and 1990s...

-branded vehicles the company produced from 1963.

The engines were overhead valve

Overhead valve

An overhead valve engine, also informally called pushrod engine or I-head engine, is a type of piston engine that places the camshaft within the cylinder block , and uses pushrods or rods to actuate rocker arms above the cylinder...

 iron

Iron

Iron is a chemical element with the symbol Fe and atomic number 26. It is a metal in the first transition series. It is the most common element forming the planet Earth as a whole, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust...

-blocks, some for petrol and some for gasoline use. The first digit after the KE denotes the number of cylinders, straight-4

Straight-4

The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....

s becoming KE4 and six-cylinder versions such as the single overhead camshaft 2.0 L straight-6

Straight-6

The straight-six engine or inline-six engine is a six-cylinder internal combustion engine with all six cylinders mounted in a straight line along the crankcase...

 which was developed in 1964 for the new Mitsubishi Debonair

Mitsubishi Debonair

The Mitsubishi Debonair is a four-door luxury car, introduced by Mitsubishi Motors in 1964 to serve as their flagship passenger vehicle in the Japanese domestic market. Three distinct generations were available during its 35-year production run until it was discontinued in 1999...

 flagship sedan, receiving the KE6 prefix. The last digit is simply a serial, denoting which number engine it is.

KE41

Engine type	Inline four-cylinder Straight-4 The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....  OHV Overhead valve An overhead valve engine, also informally called pushrod engine or I-head engine, is a type of piston engine that places the camshaft within the cylinder block , and uses pushrods or rods to actuate rocker arms above the cylinder...
Displacement	1,995 cc
Bore x stroke	84.0 x 90.0 mm
Fuel type	Diesel
Peak power	70 PS at 4,200 rpm
Applications	1963-? Mitsubishi Jupiter Junior (T50)

KE42

Engine type	Inline four-cylinder Straight-4 The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....  OHV Overhead valve An overhead valve engine, also informally called pushrod engine or I-head engine, is a type of piston engine that places the camshaft within the cylinder block , and uses pushrods or rods to actuate rocker arms above the cylinder...
Displacement	1,995 cc
Bore x stroke	84.0 x 90.0 mm
Fuel type	Regular gasoline
Peak power	90 PS at 4,800 rpm
Applications	1963-? Mitsubishi Jupiter Junior (T50), 1968-? Canter (T91) Mitsubishi Fuso Canter The Mitsubishi Fuso Canter is a line of light-duty commercial vehicle by Mitsubishi Fuso Truck and Bus Corporation. The range is currently marketed in Japan, Europe, Australia, New Zealand, Indonesia and a number of other Asian countries...

KE43

Engine type	Inline four-cylinder Straight-4 The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....  OHV Overhead valve An overhead valve engine, also informally called pushrod engine or I-head engine, is a type of piston engine that places the camshaft within the cylinder block , and uses pushrods or rods to actuate rocker arms above the cylinder...
Displacement	977 cc
Bore x stroke	72.0 x 60.0 mm
Fuel type	Regular gasoline
Peak power	51 PS at 6,000 rpm, 1963-1965 Colt 1000 sedan 55 PS at 6,000 rpm, 1966 Colt 1000 sedan, all Colt 1000F
Applications	1963-1966 Colt 1000 Mitsubishi Colt 1000 The A20-series Mitsubishi Colt 1000, 1100, 1200, and 1500 is a series of passenger cars produced by Shin Mitsubishi Heavy-Industries, Ltd, one of the companies which would become Mitsubishi Motors. Built from 1963 until 1970, they were available in four bodystyles and on two different wheelbases... , 1966-1969 Colt 1000F

KE44

Engine type	Inline four-cylinder OHV
Displacement	1088 cc
Bore x stroke	73.0 x 65.0 mm
Fuel type	Regular gasoline
Peak power	58 PS at 6,000 rpm 62 PS at 6,000 rpm (1969-1970 non-Sports Colt 11-F) 73 PS at 6,300 rpm (Twin-carb Super Sports, only in Fastback models)
Applications	1966-1968 Colt 1100, 1968-1970 Colt 1100F/11-F, 1968-1974 Delica T100

KE45

Engine type	Inline four-cylinder OHV
Displacement	1,498 cc
Bore x stroke	85.0 x 66.0 mm
Fuel type	Regular gasoline
Peak power	70 PS 85 PS (Super Sports, twin SU-carburetors)
Applications	1965-1969 Colt 1500, 1968-1969 Colt 1500 Super Sports

KE46

Engine type	Inline four-cylinder OHV
Displacement	1,189 cc
Bore x stroke	73.0 x 71.0 mm
Fuel type	Regular gasoline
Peak power	62 PS at 6,000 rpm
Peak torque	94 N·m Newton metre A newton metre is a unit of torque in the SI system. The symbolic form is N m or N·m, and sometimes hyphenated newton-metre...  (69 ft·lbf Foot-pound force The foot-pound force, or simply foot-pound is a unit of work or energy in the Engineering and Gravitational Systems in United States customary and Imperial units of measure. It is the energy transferred on applying a force of 1 pound-force through a displacement of 1 foot... ) at 3800 rpm
Applications	1968-1970 Colt 1200

KE47

Engine type	Inline four-cylinder OHV
Displacement	2,315 cc
Bore x stroke	85.0 x 102.0 mm
Fuel type	Regular gasoline
Peak power	95 PS at 4,500 rpm
Peak torque	172 Nm Newton metre A newton metre is a unit of torque in the SI system. The symbolic form is N m or N·m, and sometimes hyphenated newton-metre...  (17.5 kgm) at 2,800 rpm
Applications	Mitsubishi Canter, Jeep, Rosa

KE64

Engine type	Inline six-cylinder Straight-6 The straight-six engine or inline-six engine is a six-cylinder internal combustion engine with all six cylinders mounted in a straight line along the crankcase...  SOHC
Displacement	1991 cc
Bore x stroke	80 x 66 mm
Fuel type	Regular gasoline
Peak power	106 PS at 5,000 rpm
Peak torque	163 N·m (120 ft·lbf) at 3400 rpm
Applications	1964, 1965 Mitsubishi Debonair Mitsubishi Debonair The Mitsubishi Debonair is a four-door luxury car, introduced by Mitsubishi Motors in 1964 to serve as their flagship passenger vehicle in the Japanese domestic market. Three distinct generations were available during its 35-year production run until it was discontinued in 1999...