Mitsubishi Sirius engine
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Sirius is the name of one of Mitsubishi Motors' four series of straight-4 automobile engines, along with Astron, Orion, and Saturn.
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[edit] 4G61
The 4G61 displaces 1595 cc (82.3 x 75.0 mm bore/stroke). This engine was always DOHC 16-valve and used either ECFI or MPFI fuel injection. A turbocharged version was also produced for the Mirage. 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.
Applications:
- 1990–1992 Mitsubishi Mirage MPFI
- 1992–1995 Hyundai Elantra
[edit] 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 1795 cc.
Applications:
- 1983–1989 Mitsubishi Cordia
- 1988 Mitsubishi Tredia
[edit] 4G63
The 4G63 was a 1997 cc version. There were two different bore and stroke versions, SOHC and DOHC were produced. The DOHC version was introduced in 1987 in the Japanese market Galant VR-4 and came turbocharged or naturally aspirated. It is found in various models including the 1988-92 Galant VR-4 and the U.S. market 1990-1999 Eclipse.
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 (now DaimlerChrysler). 1990 to late April 1992 came with beefier rods and used 6 bolts to secure the flywheel to the crankshaft, May 1992 to present EVO 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 US-spec 2004 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 MPI multi-point fuel injection, has 4 valves per cylinder, is turbocharged and intercooled and features forged steel connecting rods. With the release of the Lancer Evolution IX (286hp @ 6500rpm, 289ft*lb of @ 3500rpm, 7000rpm redline), it has received Mitsubishi's MIVEC variable valve timing system, which gives smoother power delivery and a flatter torque curve.
In the United Kingdom, a special Lancer Evolution, the FQ-400, produces 302.13 kW (405.2 hp), from a 4G63 engine. At 202.9 hp (151.3 kW) per liter, it has possibly the highest specific output per liter of any production engine.
[edit] 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 sequential WRC championships.
Applications:
- 1984–1987 Dodge Colt Vista
- 1988 Mitsubishi Cordia
- 1988 Mitsubishi Tredia
- 1988–1992 Dodge Colt Vista
- 1989–1992 Mitsubishi Galant
- 1989–1992 US-spec Mitsubishi Galant
- 1990–1999 Mitsubishi Eclipse
- 1990–1998 Eagle Talon
- 1990–1994 Plymouth Laser
- Mitsubishi Starion (Australia)
- 1992–1998 Hyundai Sonata
- 1994–1998 Mitsubishi RVR X3 Turbo
[edit] 4G64
The longitudinal 4G64 is the second largest variant, at (2350 cc). Early models were 8-valve SOHC, but a later 16-valve SOHC and DOHC version was also produced. All used MPFI with an 86.5 mm bore and 100 mm stroke. The 4G64 was also available with gasoline direct injection. The version used in the Chrysler Sebring/Stratus coupes produced 147 hp (110 kW) at 5500 rpm with 158 ft·lbf (214 N·m) of torque at 4000 rpm. The Chrysler version features fracture-split forged powder metal connecting rods.
Applications:
- 1988 Mitsubishi Galant
- 1988–1990 Mitsubishi Van
- 1990–1992 Mitsubishi L200
- 1990–1992 Dodge Ram 50
- 1990–1996 Mitsubishi Mighty Max
- 1989–1991 Hyundai Sonata
- 1996–1999 Mitsubishi Eclipse Spyder GS
- 1999–2003 Mitsubishi Galant DE & ES
- 2000–2005 Mitsubishi Eclipse GS & RS
- 2003 Mitsubishi Outlander
- 2001-2005 Chrysler Sebring coupe/Dodge Stratus coupe
[edit] 4G67
The 16-valve DOHC 4G67 displaced 1836 cc.
Applications:
[edit] 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 aluminum SOHC cylinder heads. It uses MFI 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. Applications:
- 2005–present Mitsubishi Eclipse
- 2004–present Mitsubishi Lancer (Available only with the Ralliart Trim Package or Sportback Wagon)
- 2004–present Mitsubishi Galant
- 2004–present Mitsubishi Outlander
NB: From 2005 a slightly detuned version (115kW, 220Nm) is used across the entire Lancer range in Australia.
[edit] See also
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| Engines, platforms & technologies: 2G | 3B | 3G | 3A9x | 4A3x | 4A9x | 4B | 4D5x | 4G1x | 4G3x | 4G4x | 4G5x | 4G6x | 4G9x | 4M | 6A | 6B | 6G | 8A | KE Astron | Cyclone V6 | GEMA | Neptune | Orion | Saturn | Sirius | Vulcan |
| GS platform | PS platform | Z platform |
| ACD | Active-Trac | AWC | AYC | GDI | INVECS | MIEV | MIVEC | MultiMode ABS | Modulated Displacement | RISE | Silent Shaft | Sport ABS | Super Select | Vertical Vortex |
