Mitsubishi KE engine
Overview
ManufacturerMitsubishi Motors
Production1963–1975
Layout
ConfigurationStraight-4 & Straight-6
Displacement1.0–3.5 L (977–3,520 cc)
Cylinder bore72 mm (2.83 in)
73 mm (2.87 in)
80 mm (3.15 in)
82 mm (3.23 in)
84 mm (3.31 in)
85 mm (3.35 in)
Piston stroke60 mm (2.36 in)
65 mm (2.56 in)
66 mm (2.6 in)
71 mm (2.8 in)
90 mm (3.54 in)
102 mm (4.02 in)
111.1 mm (4.37 in)
Cylinder block materialIron
Cylinder head materialIron
ValvetrainOHV & SOHC 2 valves x cyl.
Combustion
Fuel systemSU Carburettor
Fuel injection
Fuel typeGasoline, Diesel
Cooling systemWater-cooled
Output
Power output51–106 PS (38–78 kW)
Torque output9.6–21.5 kg⋅m (94–211 N⋅m; 69–156 lb⋅ft)

The Mitsubishi KE engine is a range of engines produced by Mitsubishi Motors during the 1960s and early 1970s. They were extensively used in the various Colt-branded vehicles the company produced from 1963.

The engines were overhead valve iron-blocks, for gasoline and diesel use. The first digit after the KE denotes the number of cylinders, straight-4s becoming KE4 and six-cylinder versions such as the single overhead camshaft 2.0 L straight-6 which was developed in 1964 for the new Mitsubishi Debonair flagship sedan, receiving the KE6 prefix. The last digit is simply a serial, denoting which number engine it is. Some of these engines, such as the two-liter KE42, were further developed into overhead-cam engines and were named Astron.

As a large scale manufacturer, Mitsubishi had a wealth of experience building engines, both gasoline and diesel, in V and straight engine block configurations during the war. One of their many examples was the air-cooled A6120VDe air-cooled inline 6-cylinder 14.4 L diesel and the SA12200VD air-cooled V-12 diesel (21.7 litres).

Specifications

KE41

The KE41 is a diesel engine sharing the dimensions of the KE42 petrol unit.

Engine type "Jupiter" Inline four-cylinder OHV[1]
Displacement 2.0 L (1,995 cc)
Bore x stroke 84 mm × 90 mm (3.31 in × 3.54 in)
Fuel type Diesel
Peak power 70 PS (51 kW) at 4,200 rpm
Applications 1963–1966 Mitsubishi Jupiter Junior (T50)[2]

KE42

The petrol-powered KE42 was first used in the Mitsubishi Jupiter Junior truck beginning in 1963. In 1973, the KE42 was upgraded to meet new emissions regulations and received the MCA (Mitsubishi Clean Air) name to reflect this. Power also increased by 5 hp (4 kW).[3] This engine was developed into an overhead-cam unit, called the Astron 4G52.

Engine type Inline four-cylinder OHV[1]
Displacement 2.0 L (1,995 cc)
Bore x stroke 84 mm × 90 mm (3.31 in × 3.54 in)
Fuel type Regular gasoline
Peak power 90 PS (66 kW) at 4,800 rpm
95 PS (70 kW)
Applications 1963–1966 Mitsubishi Jupiter Junior (T51), 1968–1973 Canter T91,[2] 1973–1975 Canter T200

KE43

Engine type Inline four-cylinder OHV
Displacement 1.0 L (977 cc)
Bore x stroke 72 mm × 60 mm (2.83 in × 2.36 in)
Fuel type Regular gasoline
Peak power 51 PS (38 kW) at 6,000 rpm, 1963-1965 Colt 1000 sedan/van[4]
55 PS (40 kW) at 6,000 rpm, 1966 Colt 1000 sedan, all Colt 1000F
Applications 1963–1966 Colt 1000, 1966–1969 Colt 1000F

KE44

Engine type Inline four-cylinder OHV
Displacement 1.1 L (1,088 cc)
Bore x stroke 73 mm × 65 mm (2.87 in × 2.56 in)
Fuel type Regular gasoline
Peak power 58 PS (43 kW) at 6,000 rpm
62 PS (46 kW) at 6,000 rpm (1969-1970 non-Sports Colt 11-F)
73 PS (54 kW) 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 1.5 L (1,498 cc)
Bore x stroke 85 mm × 66 mm (3.35 in × 2.60 in)
Fuel type Regular gasoline
Peak power 70 PS (51 kW)
85 PS (63 kW) (Super Sports, twin SU Carburettors)
Applications 1965–1969 Colt 1500, 1968-1969 Colt 1500 Super Sports

KE46

Engine type Inline four-cylinder OHV
Displacement 1.2 L (1,189 cc)
Bore x stroke 73 mm × 71 mm (2.87 in × 2.80 in)
Fuel type Regular gasoline
Peak power 62 PS (46 kW) at 6,000 rpm
Peak torque 9.6 kg⋅m (94 N⋅m; 69 lb⋅ft) at 3,800 rpm
Applications 1968-1970 Colt 1200

KE47

The KE47 was largely replaced by the 2.4 liter Astron 4G53 in 1975.[3]

Engine type Inline four-cylinder OHV
Displacement 2.32 L (2,315 cc)
Bore x stroke 85 mm × 102 mm (3.35 in × 4.02 in)
Fuel type Regular gasoline
Peak power 95 PS (70 kW) at 4,500 rpm
100 PS (74 kW) (1973-1975)
Peak torque 17.5 kg⋅m (172 N⋅m; 127 lb⋅ft) at 2,800 rpm
Applications 1968-1975 Mitsubishi Canter T90, T200,[3] Jeep, Rosa

KE63

Engine type Inline six-cylinder[5]
Displacement 3.5 L (3,520 cc)
Bore x stroke 82 mm × 111.1 mm (3.23 in × 4.37 in)
Fuel type Diesel
Peak power 92 PS (68 kW) at 3,500 rpm
Peak torque 21.5 kg⋅m (211 N⋅m; 156 lb⋅ft) at 2,000 rpm
Applications 1963–1968 (?) Mitsubishi Rosa

KE64

Derived from the four-cylinder KE43 engine, the bore of the KE64 was increased by 8 mm, giving it an overall displacement of 1,991 cc (2.0 L). The valve layout is similar to Opel's cam-in-head design; the camshaft sits higher than in a regular pushrod engine, alongside the top-dead-center of the pistons, but not above the valves as in an overhead-cam engine.[6] The valves are actuated by short tappets rather than pushrods, allowing for a low engine with some of the more free-revving, smoother characteristics of an SOHC engine.

Engine type Inline six-cylinder OHV (high-mounted camshaft)
Displacement 2.0 L (1,991 cc)
Bore x stroke 80 mm × 66 mm (3.15 in × 2.60 in)
Fuel type Regular gasoline
Peak power 105 PS (77 kW) at 5,000 rpm
Peak torque 16.5 kg⋅m (162 N⋅m; 119 lb⋅ft) at 3,400 rpm
Applications 1964–1970 Mitsubishi Debonair (exclusive)

KE65

Engine type Inline six-cylinder[7]
Displacement 3.5 L (3,473 cc)
Bore x stroke 85 x 102mm
Fuel type Diesel
Peak power 95 PS (70 kW) at ??00 rpm
Peak torque ??
Applications 1968 Mitsubishi Rosa, 1970 Mitsubishi Jupiter T44

References

  1. ^ a b Ozeki, Kazuo (2007). 日本のトラック・バス 1918~1972 [Japanese Trucks and Buses 1918-1972] (in Japanese). Tokyo: Miki Press. p. 128. ISBN 978-4-89522-494-9.
  2. ^ a b Ozeki, p. 140
  3. ^ a b c Takayoshi, Seiji (高吉 誠司), ed. (2011-03-17), "トラックメーカーアーカイブ vol.2: 三菱ふそうのすべて" [Truck Manufacturer Archive Volume 2: Everything Mitsubishi Fuso], Camion (in Japanese), no. 780, Tokyo, Japan: Geibun Mooks, pp. 69–71, ISBN 978-4-86396-112-8
  4. ^ コルト1000バーン [Colt 1000 Van] (Brochure) (in Japanese), Mitsubishi Motor Corporation, p. 4, 1.1.160.04.20162
  5. ^ Everything Mitsubishi Fuso, p. 87
  6. ^ "【昭和の名車 122】三菱 デボネアは、22年に渡って製造されるロングセラーカーとなった" [Showa era famous car 122: Mitsubishi Debonair became a long-selling car, manufactured for 22 years]. Web Motor Magazine (in Japanese). 2019-12-22. Archived from the original on 2019-12-22.
  7. ^ Everything Mitsubishi Fuso, p. 53
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