Production 1987–present | ||
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The Mitsubishi 3G8 engine is a range of three-cylinder powerplant from Mitsubishi Motors, introduced in the fifth generation of their Mitsubishi Minica kei car. In common with other contemporary engines in the class, it could be specified with many advanced technologies despite its diminutive size, including multi-valve cylinder heads and double overhead camshafts. The top-of-the-line Dangan ZZ variant was also the first kei car to benefit from turbocharging. In 1987 Mitsubishi was the first manufacturer to supercharge a kei vehicle, and in 1989 became the world's first production car to feature five valves per cylinder, ahead of similar developments by Bugatti, Audi, Ferrari and Toyota.
Contents
- 3G81
- Single carb 1987
- Single carb Supercharger 1987
- Double carb 1989
- DOHC 1989
- Turbo 1989
- 3G82
- 3G83
- Double carb 1990
- DOHC 1990
- Turbo 1990
- 4G82
- References
Its 3G81 three-cylinder engine has a displacement of 548 cubic centimetres and features three intake valves and two exhaust valves incorporated into each cylinder. The valves are controlled by twin overhead camshafts through roller cam followers on finger rockers with hydraulic automatic lash adjusters. Gasoline is electronically injected through triple-jet nozzles (also a technological first). The water-cooled turbocharger operates through an air-to-air intercooler. The ignition timing advance is also controlled electronically, and a knock-sensing system is included.
Originally a 550 cc engine, it was enlarged to 660 cc in 1990 following changes in the class regulations.
3G81
Displacement — 548 cc
Bore — 62.3 mm
Stroke — 60.0 mm
Fuel type — Unleaded regular gasoline
Single carb (1987)
Single carb Supercharger (1987)
Double carb (1989)
DOHC (1989)
Turbo (1989)
3G82
Displacement — 796 cc
Bore — 65.0 mm
Stroke — 80.0 mm
widdle Engine type — Inline three-cylinder SOHC 6 valves
Power — 33 kW (45 PS) at unknown rpm
This was built only for the Taiwanese market Mitsubishi Towny (Minica) and Minicab 800, from 01.87 - 11.88. Most specifications are unknown.
3G83
Displacement — 657 cc
Bore — 65.0 mm
Stroke — 66.0 mm
Fuel type — Unleaded regular gasoline
Double carb (1990)
DOHC (1990)
Turbo (1990)
4G82
Displacement — 1,061 cc
Bore — 65.0 mm
Stroke — 80.0 mm
Engine type — Inline four-cylinder SOHC
Power — 43 kW (58 PS) JIS at 5,500 rpm
Torque — 9.1 kg·m (89 N·m) at 3,500 rpm
Of the same dimensions as the 3G82 but with a fourth cylinder, this was built in Taiwan by CMC (China Motor Corporation). Used in the Mitsubishi Varica (LWB version of fourth generation Mitsubishi Minicab).