Mitsubishi Sirius engine

Sirius

Manufacturer	Mitsubishi Motors
Also called	4G6/4D6
Production	1970s–present
Cylinder block alloy	Cast iron

The Mitsubishi Sirius or 4G6/4D6 engine is the name of one of Mitsubishi Motors' four series of inline 4 automobile engines, along with Astron, Orion, and Saturn. The 4G6 are gasoline engines, the 4D6 diesels.

4G61

The 4G61 displaces 1595 cc (82.3 x 75.0 mm bore/ full length stroke). This engine was not always DOHC 16-valve and used either Multi-point (MPFI) or Electronic Control (ECFI) fuel injection. A turbocharged version was also produced for the Mirage and Lancer. The 4G61 does not have balance shafts like the other 4G6x motors. Instead, it has different components, some of which can be used on the "Silent Shaft" engine.

Performance

• 4G61 91kW-124HP/650
• 4G61T (USA/Canada only) 99kW-135HP/6000 191Nm/3000
• 4G61T (Japan) 160HP-117.68kW/6000 220.65Nm/2500

Applications

• 1988–1992 Mitsubishi Mirage / Mitsubishi Colt (MPFI)
• 1988–1992 Dodge Colt / Plymouth Colt
• 1988–1992 Eagle Summit
• 1992–1995 Hyundai Elantra

4G62

The larger 1.8 L 4G62 was an SOHC 8-valve unit for longitudinal rear-wheel drive and all-wheel drive use. With an 80.6 x 88.0 mm bore / stroke, it displaced 1,795 cc. It was available either in carburetor form, multi-point fuel injection, or ECI Turbo as found in the Lancer EX 1800GSR or 1800GT, and Cordia GSR.

Applications

• 1983–1989 Mitsubishi Cordia
• 1983-1989 Mitsubishi Tredia
• 1981-1986 Mitsubishi Delica/L300/Express
• 1984-1988 Mitsubishi Galant/Eterna
• 1980-1987 Mitsubishi Lancer EX 1800GSR or 1800GT

4D65

Known as the "Sirius Diesel", the 4D65 had the same dimensions as the 4G62 (1,795 cc). It was available either naturally aspirated or turbocharged, and was used in most Mitsubishi diesel passenger cars in the eighties and beginning of the nineties.

Applications

• 1983-1989 Mitsubishi Galant/Galant Σ/Eterna Σ
• 1983–1992 Mitsubishi Lancer/Lancer Fiore/Mirage Saloon
• 1983–1987 Mitsubishi Mirage/Colt
• 1984-1991 Mitsubishi Chariot/Space Wagon
• 1987-1991 Mitsubishi Mirage/Colt
• 1987-1992 Mitsubishi Galant/Eterna
• 1988-1991 Mitsubishi Lancer/Mirage Sedan
• 1991-1995 Mitsubishi Lancer/Libero
• 1992-1997 Mitsubishi Chariot/Space Wagon

4G63

The 4G63 was a 1997 cc version. (85 mm bore x 88 mm stroke) SOHC and DOHC were produced. The DOHC version was introduced in 1987 in the Japanese market Galant VR-4 and came in turbocharged or naturally aspirated form. It is found in various models including the 1988-92 Galant VR-4 and the U.S. market 1990-1999 Eclipse, as well as the Mitsubishi Lancer Evolution I-IX.

An SOHC carbureted 8v version(engine code g63b) was also available in Mitsubishi Mighty Max and Dodge Ram50 Pickup trucks from 1987-1989

The SOHC version was used in Mitsubishi Galant models until 1993. It has 76 kW of output and 157 NM of torque at 4750 rpm.

Also, the SOHC version is produced until the late 90s and early 2000 and it is used in Mitsubishi cars like the Montero and the 2.0L 2-door Pajero with an output of 101kW at 4700 rpm. Also the N33 and N83 Spacewagon (UK market) in single cam 16 valve format.

The Mitsubishi Eclipse, Eagle Talon and Plymouth Laser introduced the DOHC turbocharged intercooled version to the U.S. in 1989 through Diamond Star Motors, a joint venture between Mitsubishi Motors and the Chrysler Corporation. From 1990 to late April 1992 came beefier connecting rods and the use of 6 bolts to secure the flywheel to the crankshaft; May 1992 to 2006 Evolution versions have lighter rods and use 7 bolts to secure the flywheel to the crankshaft. They are referred to as the "six bolt" and "seven bolt" engines, respectively.

Output for the 2003 Japanese/US Mitsubishi Lancer Evolution is 271 hp (202 kW) at 6500 rpm with 273 ft·lbf (370 N·m) of torque at 3500 rpm. It has a cast iron engine block and aluminum DOHC cylinder head. It uses multi-point fuel injection, has 4 valves per cylinder, is turbocharged and intercooled and features forged steel connecting rods.

In the United Kingdom, a special Lancer Evolution, the FQ-400, produces 302.13 kW (405.2 hp), from a 4G63 engine. At 202.6 hp (151.3 kW) per liter, it has the highest specific output per liter of any production engine.

Racing

Its turbocharged variant, 4G63T (also sometimes referred to simply as the 4G63), has powered Mitsubishi vehicles in World Rally Championships for years in the Mitsubishi Galant VR-4, Lancer Evolution, Carisma GT and Lancer WRC04. It was the powerplant of the Lancer Evolution when Tommi Mäkinen won his four consecutive WRC championships in his Lancer. MHI and T-4 turbos were both used as power plants for these engines.

Applications

• 1983-1998 Mitsubishi Chariot
• 1988 Mitsubishi Cordia
• 1988 Mitsubishi Tredia
• 1989–2003 Mitsubishi Galant
• 1987-1989 Mitsubishi Mighty Max
• 1987-1989 Dodge Ram 50
• 1990–1999 Mitsubishi Eclipse
• 1993–1998Mitsubishi Pajero
• 1994–1998 Mitsubishi RVR
• 1994–1998 Mitsubishi Delica
• 1992–2006 Mitsubishi Lancer Evolution
• 2001–2006 Mitsubishi Airtrek
• 1987-1988 Hyundai Stellar
• 1992-1995 Hyundai Elantra
• 1989-1998 Hyundai Sonata
• 2004–present Brilliance BS6
• 1983–1992 Dodge Colt Vista
• 1989-1992 Eagle Vista Wagon
• 1990–1998 Eagle Talon
• 1990–1994 Plymouth Laser
• 1996–1999 Proton Perdana

4D68

Known as the "Sirius Diesel", the 4D68 version displaced 1998cc. It was fitted with a 93mm stroke crankshaft and the cylinder bore diameter was 82.7mm. This engine used pistons with a static compression ratio of 22.4:1 and piston pins were 25mm OD. It was available either naturally aspirated or turbocharged, and replaced the 4D65 as Mitsubishi's "go-to" diesel.

Applications

• 1991-1996 Mitsubishi Mirage/Colt
• 1991-1996 Mitsubishi Lancer/Libero
• 1992-1997 Mitsubishi Chariot/Space Wagon
• 1996-2000 Mitsubishi Galant
• 1996-1999 Mitsubishi Lancer/Libero
• 1997-2002 Mitsubishi Mirage/Colt
• 1995-2000 Proton Wira 2.0D

4G64

The 4G64 is the second largest variant, at 2,351 cc. Early models were 8-valve SOHC, but a later 16-valve SOHC and DOHC version was also produced. All used MPFI and had an 86.5 mm bore and 100 mm stroke. The 4G64 was later also available with gasoline direct injection. The version used in the Chrysler Sebring/Stratus coupes produced 152 hp (110 kW) at 5500 rpm with 162 ft·lbf (214 N·m) of torque at 4000 rpm. The Chrysler version features fracture-split forged powder metal connecting rods. The 4G64 is an interference motor like the 4G63, however, the early 8-valve 4G64 is a non interference engine.

Applications

• 1987–1990 Mitsubishi Sapporo
• 1988–1996 Mitsubishi Delica/Van
• 1990–1992 Mitsubishi L200
• 1990–1996 Mitsubishi Mighty Max
• 1986-1998 Hyundai Grandeur
• 1993-1997 Mitsubishi Chariot
• 1994–2003 Mitsubishi Galant
• 1996–1998 Mitsubishi Magna
• 1994–2006 Mitsubishi Delica
• 2000–2005 Mitsubishi Eclipse
• 2003 Mitsubishi Outlander
• 2005 Mitsubishi Zinger
• 1989–1991 Hyundai Sonata
• 1990–1992 Dodge Ram 50
• 2001–2005 Chrysler Sebring/Dodge Stratus
• 2004–present Brilliance BS6
• 2008–present Chery V5
• 2006–present Great Wall Hover
• 1998-2005 Mitsubishi Montero (V11 - 2 door) Latin America version

4G67

The 16-valve DOHC 4G67 displaced 1836 cc. Bore x Stroke [mm]: 81.5 x 88

Applications

• Mitsubishi Colt III
• Mitsubishi Mirage
• Mitsubishi Galant
• Mitsubishi Lancer
• Hyundai Elantra

c58a, c68a

4G69

The 4G69 is a 2378 cc version built in Shiga, Japan. Bore is 87 mm and stroke is 100 mm. Output is 162 hp (119 kW) at 5750 rpm (160 in the Sportback Wagon) with 162 ft·lbf (219 N·m) of torque at 4000 rpm. It has a cast iron engine block and an aluminum SOHC cylinder head. It uses multi-point fuel injection, has 4 valves per cylinder with roller followers and features forged steel connecting rods, a one-piece cast camshaft, and a cast aluminum intake manifold. The 4G69 incorporates Mitsubishi's MIVEC Variable Valve Timing technology. The 4G69 is an interference motor like the 4G63.

Applications

• 2003–present Mitsubishi Grandis
• 2004–2006 Mitsubishi Lancer
• 2004–2006 Mitsubishi Outlander
• 2004–present Mitsubishi Galant
• 2006–present Mitsubishi Eclipse
• 2009-present Great Wall Haval H5 (aka X240)
• 2011-present BYD S6

NB: From 2005 a slightly detuned version (115kW, 220Nm) is used across the entire Lancer range in Australia.

See also

• List of Mitsubishi engines

References

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