Mitsubishi 2G1 engine

The Mitsubishi 2G1 engine is a water-cooled iron-block two-stroke twin-cylinder engine built by Mitsubishi Motors for the kei car class from 1968. They were first introduced in the first generation Minica[1] to replace (and to complement) the otherwise similar but air-cooled ME24 powerplant.[2] The difference of nomenclature compared to the ME24 is due to Mitsubishi's 1967 change of engine naming practice, 2G1 meaning it was in the first family of two-cylinder gasoline-powered engines. The "0" in "2G10" means that it was the first displacement version produced, with numbers after a dash (e.g. 2G10-5) then denoting the various subiterations.

Mitsubishi 2G1 engine
Overview
ManufacturerMitsubishi Motors
Also calledRed, Gold engine
Production1968–1976
Layout
Configurationtwo-stroke I2
Chronology
PredecessorME21/24
SuccessorVulcan 2G2

The 2G10 engine was replaced by the 2G21 "Vulcan" engine, a four-stroke unit of identical displacement which first appeared in September 1972. The two-stroke 2G10 did continue to be produced as a low-cost alternative until new Kei car regulations took effect in January 1976, mainly for commercial vehicles.

2G10

Specifications
Engine type Twin-cylinder two-stroke[2]
Displacement 359 cc
Bore x stroke 62.0 x 59.6 mm
Fuel type Self mix oil and gasoline
Peak power 23 PS (17 kW) at 5500 rpm 2G10, Minica LA23 SDX
28 PS (21 kW) at 6000 rpm[2] 2G10-1, first "Red"
38 PS (28 kW) at 7000 rpm 2G10-2, "Gold"
34 PS (25 kW) at ? rpm 2G10-4, second "Red"
31 PS (23 kW) at 6500 rpm[3] 2G10-5, third "Red" (Minica 73, Minica Van)
28 PS (21 kW) at 6000 rpm (Minicab W, 1972-197?)[4]
Peak torque 3.4 kg⋅m (33 N⋅m; 25 lb⋅ft) at 5000 rpm 2G10, Minica LA23 SDX
3.6 kg⋅m (35 N⋅m; 26 lb⋅ft) at 5000 rpm 2G10-1 first "Red"
3.9 kg⋅m (38 N⋅m; 28 lb⋅ft) at 6500 rpm 2G10-2 "Gold"
3.8 kg⋅m (37 N⋅m; 27 lb⋅ft) at 5500 rpm 2G10-5 third "Red" (Minica 73, Minica Van)
3.7 kg⋅m (36 N⋅m; 27 lb⋅ft) at 4000 rpm (Minicab W, 1972-197?)

Applications

See also

References
  1. 360cc: Nippon 軽自動車 Memorial 1950-1975: p69, 2007. ISBN 4861440831
  2. 2G10 engine-equipped Mitsubishi Minica 70 (1969) Archived 2006-03-23 at the Wayback Machine, Mitsubishi Motors Web Museum
  3. 自動車ガイドブック: Japanese motor vehicles guide book (in Japanese). Japan: Japan Automobile Manufacturers Association. 20: 180. 1973-10-30. {{cite journal}}: Missing or empty |title= (help)
  4. Automobile Guide Book 1973/1974, p. 206
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