World Library  
Flag as Inappropriate
Email this Article

Mitsubishi Sirius engine

Article Id: WHEBN0001258198
Reproduction Date:

Title: Mitsubishi Sirius engine  
Author: World Heritage Encyclopedia
Language: English
Subject: Mitsubishi Outlander, Mitsubishi Motors engines, MIVEC, Mitsubishi Orion engine, Mitsubishi Neptune engine
Collection: Mitsubishi Motors Engines
Publisher: World Heritage Encyclopedia

Mitsubishi Sirius engine

Manufacturer Mitsubishi Motors
Also called 4G6/4D6
Production 1979–present
Combustion chamber
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 1
    • Performance 1.1
    • Applications 1.2
  • 4G62 2
    • Applications 2.1
  • 4G63 3
    • Racing 3.1
    • Applications 3.2
  • 4G64 4
    • Applications 4.1
  • 4D65 5
    • Applications 5.1
  • 4G67 6
    • Applications 6.1
  • 4D68 7
    • Applications 7.1
  • 4G69 8
    • Applications 8.1
  • See also 9
  • External links 10
  • References 11


The 4G61 displaces 1595 cc (82.3 x 75.0 mm bore/ full length stroke). This engine was 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.


  • 4G61 91 kW-124 hp/650
  • 4G61T (USA/Canada only) 99 kW-135 hp/6000 191 Nm/3000
  • 4G61T (Japan) 145 HP-117.68 kW/6000 220.65 Nm/2500



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.



G63B Cyclone Dash 3x2 in a fifth generation Galant

The 4G63 was a 1997 cc version. (85 mm bore x 88 mm stroke) SOHC and DOHC were produced. Both versions were available in either naturally aspirated and turbocharged form. For front-wheel drive applications, the turbocharged Sirius' name was changed to "Cyclone Dash". As fitted to the fifth generation Galant 200 PS (147 kW) JIS gross were claimed - the output claims later shrank to 170 PS - for the turbocharged and intercooled "Sirius Dash 3x2 valve" engine. This version could switch between breathing through two or three valves per cylinder, to combine high top-end power with low-end drivability as well as allowing for economical operation.[1] It was a modification of Mitsubishi MCA-Jet technology which used a secondary intake valve to inject air into the engine for more efficient emissions control. The DOHC version was introduced in 1987 in the Japanese market Galant, 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. Later versions also received Mitsubishi's variable valve-timing system, Mivec.

A SOHC carbureted eight-valve version (engine code G63B) was also available in Mitsubishi's pickup trucks (L200, Strada, Mighty Max, Dodge Ram 50) from the eighties until the mid-nineties. It produces 92 hp (69 kW) at 5,500 rpm in European trim (1989).[2] The SOHC version was also used in Mitsubishi Galant models until 1993. It has 76 kW of output and 157 Nm of torque at 4,750 rpm.

In 1998 Hyundai with help from its partner Mitsubishi used a 4G63 cylinder head and mated it to a 4G64 block to make its new 2.4 liter engine to power the 1998 to 2005 Hyundai Sonata and 2000 to 2005 Kia Optima. The engine is referred to as the G4JS in Hyundai nomenclature.

Mivec Turbo 4G63 in a Lancer Evo IX

Also, a SOHC version was produced until the late 90s and early 2000s and was used in Mitsubishi cars like the Montero and the 2.0L 2-door Pajero with an output of 101 kW (137 PS) at 4,700 rpm. Also the N33 and N83 Spacewagon and Galant (UK market) received the 4G63, in single-cam sixteen-valve format. A similar version, with 100 PS (74 kW), was also used in some light duty Mitsubishi Canters from 1997 on.[3]

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 six bolts to secure the flywheel to the crankshaft; May 1992 to 2006 Evolution versions have lighter rods and use seven 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 US Mitsubishi Lancer Evolution is 271 hp (202 kW) at 6500 rpm with 273 lb·ft (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 four valves per cylinder, is turbocharged and intercooled and features forged steel connecting rods.

The final version of the engine was found in Lancer Evolution IX. It was equipped with Mitsubishi's variable valve timing system, MIVEC. This version also had a revised turbocharger, extended reach spark plugs, two-piece rings.


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.



The 4G64 is the second largest variant, at 2,351 cc. Early models were 8-valve interference engines, while the SOHC 8V 4G64 is a non interference engine. From March 1996 an LPG version with 115 PS (85 kW) at 5,000 rpm was available in the Mitsubishi Canter.[3]



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.



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


c58a, c68a


Mitsubishi 4D68 engine mounted on 98' Galant Break (Legnum)

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.

  • Type : Diesel engine
  • Number of cylinders: 4 in-line
  • Combustion chamber: Swirl chamber
  • Lubrication system: Pressure feed, full-flow filtration
  • Oil pump type: External gear type
  • Cooling system: Water-cooled
  • Water pump type: Centrifugal impeller type
  • EGR type: Single type
  • Fuel system: Electronic control distributor-type injection pump
  • Supercharging: Turbocharger
  • Rocker arm: Roller type



4G69 In Grandis

The 4G69 is a 2378 cc version built in MIVEC Variable Valve Timing technology. The 4G69 is an interference motor. Combined with the 4G63T (Turbo variant of 4G63) engine's head with or without Mitsubishi's MIVEC Variable Valve Timing technology with this engine's block, has proven to be capable of upgrading just below the 800 wheel horsepower mark.


NB: From 2005 a sli499ghtly detuned version (115 kW, 220 N·m) is used across the entire Lancer range in Australia.9

See also

External links

  • JDM Spec Engines - Mitsubishi 4G63T Engine


  1. ^ Yamaguchi, Jack K. (1985), Lösch, Annamaria, ed., "Japan: Lucrative Contraction", World Cars 1985 (Pelham, NY: The Automobile Club of Italy/Herald Books): 51,  
  2. ^ Mitsubishi Motors: Commercial Vehicle Range (brochure), Cirencester, Glos., UK: The Colt Car Company, 1989, p. 12 
  3. ^ a b Takayoshi, Seiji (高吉 誠司), ed. (2011-03-17), "トラックメーカーアーカイブ vol.2: 三菱ふそうのすべて [Truck Manufacturer Archive Volume 2: Everything Mitsubishi Fuso]", Camion (in Japanese) (Tokyo, Japan: Geibun Mooks) (780): 66,  
  • "Engine Epic Part 8 - Mitsubishi Engines", Michael Knowling, Autospeed, issue 48, 21 September 1999
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.