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The Mitsubishi 6A1 engine is a series of piston V6 engines from Mitsubishi Motors, found in their small and medium vehicles through the 1990s. They ranged from 1.6 to 2.5 L (1,597 to 2,498 cc) in size, and came with a variety of induction methods and cylinder head designs and configurations.

Mitsubishi 6A1 engine
Overview
Manufacturer	Mitsubishi Motors
Production	1992–2009
Layout
Configuration	V6 engine
Displacement	1.6 to 2.5 L (1,597 to 2,498 cc)
Cylinder bore	73 mm (2.87 in) 75 mm (2.95 in) 78.4 mm (3.09 in) 81 mm (3.19 in)
Piston stroke	63.6 mm (2.50 in) 69 mm (2.72 in) 80.8 mm (3.18 in)
Block material	Cast Iron
Head material	Aluminium alloy
Valvetrain	SOHC & DOHC 4 valves x cyl. with MIVEC (some versions)
Compression ratio	8.5:1-10.4:1
Combustion
Turbocharger	Mitsubishi Heavy Industries TD03, TD025M-7G Eterna VR-4/ TD025L-7G (on some versions)
Fuel system	Multi-port fuel injection
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	99–206 kW (135–280 PS; 133–276 hp)
Torque output	147–363 N⋅m (108–268 lb⋅ft)

Now out of production, the 1.6 L (1,597 cc) 6A10 is still the smallest modern production V6. The small displacement was offered so Japanese buyers could purchase a powerful engine, while reducing their annual road tax obligation.

6A10

• Displacement — 1.6 L (1,597 cc)
• Bore x Stroke — 73 mm × 63.6 mm (2.87 in × 2.50 in)

DOHC

• Engine type — V type 6-cylinder DOHC 24-valve
• Compression ratio — 10.0:1
• Fuel system — ECI multi
• Peak power — 103 kW (140 PS; 138 hp) at 7000 rpm
• Peak torque — 147 N⋅m (108 lb⋅ft) at 4500 rpm

Applications

• 1992–1994 Mitsubishi Mirage
• 1992–1998 Mitsubishi Lancer

6A11

• Displacement — 1.8 L (1,829 cc)
• Bore x Stroke — 75 mm × 69 mm (2.95 in × 2.72 in)

SOHC

• Engine type — V type 6-cylinder SOHC 24-valve
• Compression ratio — 9.5:1
• Fuel system — ECI multi
• Peak power — 99 kW (135 PS; 133 hp) at 6000 rpm
• Peak torque — 167 N⋅m (123 lb⋅ft) at 4500 rpm

Applications

• 1992–96 Mitsubishi Galant/Eterna/Emeraude
• 1995–98 Mitsubishi Mirage

6A12

• Displacement — 2.0 L (1,998 cc)
• Bore x Stroke' — 78.4 mm × 69 mm (3.09 in × 2.72 in)

DOHC

• Engine type — V type 6-cylinder DOHC 24-valve
• Compression ratio — 9.5:1, 10.0:1, 10.4:1
• Fuel system — ECI multi
• Peak power — 107–110 kW (145–150 PS; 143–148 hp) at 6000–6750
• Peak torque — 179–181 N⋅m (132–133 lb⋅ft) at 4000–4500

Applications

• 1992-1996 Mitsubishi Galant/Eterna/Emeraude
• 1992-1994 Mitsubishi Diamante
• 1994-2000 Mitsubishi FTO
• 1999-2010 Proton Perdana
• 2005-2009 Proton Waja Chancellor

DOHC & sports ECU

• Engine type — V type 6-cylinder DOHC 24-valve
• Compression ratio — 10.0:1
• Fuel system — ECI multi
• Peak power (1994–1996) — 127–132 kW (173–179 PS; 170–177 hp) at 7000 rpm
• Peak torque — 191 N⋅m (141 lb⋅ft) at 4000 rpm

Applications

• 1994–2000 Mitsubishi FTO
• 1992–1996 Mitsubishi Galant/Eterna/Emeraude

MIVEC

• Engine type — V type 6-cylinder DOHC 24-valve MIVEC
• Compression ratio — 10.0:1
• Fuel system — ECI multi
• Peak power — 147 kW (200 PS; 197 hp) at 7500 rpm
• Peak torque — 200 N⋅m (148 lb⋅ft) at 6500 rpm

Applications

• 1994–2000 Mitsubishi FTO
• 1993–2002 Mitsubishi Galant

DOHC Twin Turbo

• Engine Type — V Type 6-Cylinder QUADCAM 24-Valve
• Compression Ratio — 8.5:1
• Fuel System — ECI Multi
• Injector Size — 275 cc (16.8 cu in)
• Peak Power — 158–177 kW (215–241 PS; 212–237 hp) at 6000 rpm
• Peak Torque — 309 N⋅m (228 lb⋅ft) at 4000 rpm
• Turbocharger Model — Mitsubishi Heavy Industries TD025M-7G Eterna VR-4/ TD025L-7G Mitsubishi Galant Sports GT 1994

Applications

• 1994 Mitsubishi Galant Sports GT VR-4 TD025L-7G
• 1992–96 Mitsubishi Galant VR-4 — E84A
• 1992–96 Mitsubishi Eterna XX-4/GT — E84A
• 1994-1996 Mitsubishi Galant Sports GT (E50-E60-E70-E80)

Accelerations:

• 0-80 km/h (50 mph) (sec):4.3
• 0-100 km/h (62 mph) (sec):6.4
• 0-160 km/h (99 mph) (sec):15.6
• 0-200 km/h (120 mph) (sec):29
• 0-300 km/h (190 mph) (sec):
• 0-50 mph (80 km/h) (sec):4.4
• 0-60 mph (97 km/h) (sec):6.1
• 0-100 mph (160 km/h) (sec):15.8
• 0-150 mph (240 km/h) (sec):
• 0-200 mph (320 km/h) (sec):

6A13

• Displacement — 2.5 L (2,498 cc)
• Bore x Stroke — 81 mm × 80.8 mm (3.19 in × 3.18 in)

SOHC

• Engine type — V type 6-cylinder SOHC 24-valve
• Compression ratio — 9.0, 9.5:1
• Fuel system — ECI multi
• Peak power — 120–129 kW (163–175 PS; 161–173 hp) at 5750 rpm
• Peak torque — 223–230 N⋅m (164–170 lb⋅ft) at 4500 rpm

Applications

• 1996–2003 Mitsubishi Galant/Legnum
• 2002–2005 Mitsubishi Diamante

Twin Turbo DOHC

• Engine Type — V Type 6-Cylinder DOHC 24-Valve
• Compression Ratio — 8.5:1
• Fuel System — MPI Mitsubishi ECI Multi
• Peak Power — 191–206 kW (260–280 PS; 256–276 hp) at 5500 rpm
• Peak Torque — 343–367 N⋅m (253–271 lb⋅ft) at 4000 rpm
• Turbocharger Model — Mitsubishi TD03-7T
• Injector Size — 390 cc (24 cu in)

Applications

• 1996–2003 Mitsubishi Galant/Legnum VR-4 — EC5A/EC5W

Accelerations:

• 0-80 km/h (50 mph) (sec):3.7
• 0-100 km/h (62 mph) (sec):5.3
• 0-160 km/h (99 mph) (sec):13.3
• 0-200 km/h (120 mph) (sec):23.2

See also

• Mitsubishi Motors engines

References

• "Engine Epic Part 8 - Mitsubishi Engines", Michael Knowling, Autospeed, issue 48, 21 September 1999

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