From 1992 to 2010, a Japanese company assembled the Mitsubishi 6A12 2.0-liter V6 engine, which was initially installed on several of its mass models and then exclusively on Proton vehicles after 2000. There were SOHC, DOHC, DOHC-MIVEC, and twin-turbo versions of this power unit.
The engines 6A10, 6A11, 6A12TT, 6A13, and 6A13TT are also part of the 6A1 family.
The engine was mounted on:
- Mitsubishi Diamante F10 in 1992 – 1994;
- Mitsubishi FTO in 1994 – 2000;
- Mitsubishi Galant E50 in 1992 – 1998;
- Mitsubishi Galant EA in 1996 – 2000;
- Proton Waja Chancellor in 2005 – 2010;
- Proton Perdana in 1998 – 2010.
Specifications
| Production years | 1992-2010 |
| Displacement, cc | 1998 |
| Fuel system | injector |
| Power output, hp | 145 – 150 (MPI SOHC) 170 – 180 (MPI DOHC) 200 (MPI DOHC-MIVEC) |
| Torque output, Nm | 180 (MPI SOHC) 190 (MPI DOHC) 200 (MPI DOHC-MIVEC) |
| Cylinder block | cast iron V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 78.4 |
| Piston stroke, mm | 69 |
| Compression ratio | 9.5 – 10.4 (MPI SOHC) 10.0 (MPI DOHC) 10.0 (MPI DOHC-MIVEC) |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no (MPI SOHC) no (MPI DOHC) MIVEC (MPI DOHC-MIVEC) |
| Turbocharging | no (except for 6A12TT, for which a separate article) |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 4.2 |
| Fuel type | petrol |
| Euro standards | EURO 2/3 |
| Fuel consumption, L/100 km (for Mitsubishi FTO 1998) — city — highway — combined |
10.7 6.1 8.3 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 170 |
Disadvantages of the Mitsubishi 6A12 engine
Engine maintenance is made more difficult by the engine compartment’s extremely dense layout;
Although the timing belt is intended to last 90,000 kilometers, it may burst sooner and cause the valves to bend;
Frequently, the vehicle simply stalls due to a malfunctioning idle speed controller;
Hydraulic lifters quickly wear out and start to knock because of bad oil;
The liners can turn here even if the oil pressure drops a little.