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Mitsubishi 6G7 engine

November 27, 2023

The 6G7 series or Cyclone V6 engine is a series of V6 piston engines from Mitsubishi Motors. Five displacement variants were produced from 1986 to 2021, with both SOHC and DOHC, naturally aspirated and turbo charged layouts. While MIVEC variable valve timing has also been implemented in some versions the 2.5, 3.0, and 3.5 L versions were also available with gasoline direct injection. This engine has been the flagship powerplant of the company except when they briefly built a V8 in 1999–2001. The staple of their high-end sedans, it was given twin-turbos for the Mitsubishi GTO, and became the most powerful car ever built by the company at the time.

Mitsubishi 6G7 engine
6G75 in a 2005 Mitsubishi Galant GTS
Overview
ManufacturerMitsubishi Motors
Production1986–2021
Layout
Configuration60° V6
Displacement2.0–3.8 L; 121.9–233.6 cu in (1,998–3,828 cc)
Cylinder bore74.7 mm (2.94 in)
83.5 mm (3.29 in)
91.1 mm (3.59 in)
93 mm (3.66 in)
95 mm (3.74 in)
Piston stroke76 mm (2.99 in)
85.8 mm (3.38 in)
90 mm (3.54 in)
ValvetrainSOHC 2 valves × cyl.
DOHC 4 valves × cyl. with MIVEC (on some versions)
Compression ratio8.0–10.5:1
Combustion
SuperchargerOn Debonair only.
Turbochargerwith intercooler (on some versions)
Fuel systemMulti-port fuel injection
Direct injection
Fuel typeGasoline
Oil systemPressure feed, full-flow filtration with Trochoid type oil pump
Cooling systemWater-cooled
Output
Power output105–324 PS (77–238 kW; 104–320 hp)
Torque output116–315 lb⋅ft (157–427 N⋅m)
Dimensions
Dry weightaround 155 kg (342 lb)
Chronology
SuccessorMitsubishi 6B3 engine

Bore and Stroke edit

Engine code Displacement Bore × stroke
6G71 2.0 L; 121.9 cu in (1,998 cc) 74.7 mm × 76 mm (2.94 in × 2.99 in)
6G72 3.0 L; 181.4 cu in (2,972 cc) 91.1 mm × 76 mm (3.59 in × 2.99 in)
6G73 2.5 L; 152.4 cu in (2,497 cc) 83.5 mm × 76 mm (3.29 in × 2.99 in)
6G74 3.5 L; 213.4 cu in (3,497 cc) 93 mm × 85.8 mm (3.66 in × 3.38 in)
6G75 3.8 L; 233.6 cu in (3,828 cc) 95 mm × 90 mm (3.74 in × 3.54 in)

6G71 edit

The 6G71 model featured SOHC and produced 88 kW (120 PS; 118 hp) at 5,500 rpm and 172 N⋅m (127 lbf⋅ft) at 4,500 rpm. It was installed with two valves per cylinder, and used Mitsubishi's ECI-Multi multiple port fuel injection fuel delivery system. The compression ratio was 8.9:1. An earlier version, with single-point fuel injection, only had 105 PS (77 kW; 104 hp) at 5,000 rpm and 16.1 kg⋅m (158 N⋅m; 116 lb⋅ft) at 4,000 rpm.[1]

A supercharger was installed and exclusive to the Debonair. It produces 150 PS (110 kW; 148 hp) at 5,000 rpm and 221 N⋅m (163 lbf⋅ft) at 3,000 rpm. The compression ratio for the supercharged model is 8.0:1. The 6G71 engine was also converted to run on LPG, a version which was only available to the Debonair and mainly intended for commercial (taxi) use.

Applications edit

6G72 edit

The 6G72 was manufactured in three different models which featured SOHC with 12 valves, SOHC with 24 valves, and DOHC with 24 valves.

The latest version was used in the Mitsubishi Eclipse GT and Galant. Output in 2004 was 210 hp (157 kW; 213 PS) at 5500 rpm with 278 N⋅m (205 lbf⋅ft) of torque at 4000 rpm. In the older version, used in many Chrysler models since 1987, this V6 was an SOHC 12-valve developing 141 hp (105 kW; 143 PS) at 5000 rpm and 172 lb⋅ft (233 N⋅m) of torque at 3600 rpm. The Mitsubishi models were with a 3.0L 6G72 engine SOHC 24-valve developing 195 hp (145 kW; 198 PS) at 5000 rpm and 205 lb⋅ft (278 N⋅m) of torque at 4000 rpm. For the MIVEC engine, output was 273 PS (201 kW; 269 hp) at 6000 rpm and 304 N⋅m (224 lb⋅ft) at 4500 rpm.

The SOHC 12-valve for the second generation of Pajero could produce up to 109 kW (148 PS; 146 hp) and 235 N⋅m (173 lb⋅ft), whereas the SOHC 24-valve could produce up to 133 kW (181 PS; 178 hp) and 255 N⋅m (188 lb⋅ft).

The DOHC 24-valve was used in the Mitsubishi Debonair, 3000GT, and Dodge Stealth producing 222 hp (166 kW; 225 PS) and 205 lb⋅ft (278 N⋅m) of torque with a 10.0:1 compression ratio in naturally aspirated form, and as much as 320 hp (239 kW; 324 PS) and 315 lb⋅ft (427 N⋅m) of torque in turbocharged form.[2] The turbocharged variant had the lowest compression ratio at 8.0:1, with each bank of the V6 having its own independent turbocharger and intercooler. Turbochargers were built by Mitsubishi.

Applications edit

6G73 edit

The 6G73 is a 24-valve SOHC design with two valves running off a single cam lobe on the exhaust valves using a forked rocker arm and each intake valve actuated with two cam lobes, with a smaller bore than the 3.0L version of the same block. Bore and stroke are 83.5 mm × 76 mm (3.29 in × 2.99 in); it is a 60-degree V6 and weighs around 155 kg (342 lb). The engine has low-profile cast aluminum heads which help it to fit into compact engine bays, while pent-roof combustion chambers increase efficiency and make room for four valves per cylinder, arranged in a cross-flow pattern with a "tumble" intake port for both strong breathing and low emissions. Spark plugs are centered in the combustion chambers. The intake valves are 33 mm (1.30 in) in diameter while exhaust valves are 29 mm (1.14 in). The SOHC 24 valve version of the 6G72 uses these same cylinder heads. A toothed timing belt is used. The output of 6G73 is 163 PS (120 kW; 161 hp) at 5,900 rpm with 221 N⋅m (163 lb⋅ft) of torque at 4,350 rpm.[3]

Applications edit

6G74 edit

The 6G74 is a 24-valve unit available with either SOHC, DOHC, or MIVEC DOHC. Output for the SOHC version varies from 139 kW (189 PS; 186 hp) at 4,750 rpm with 306 N⋅m (226 lb⋅ft) of torque at 3,750 rpm in the Pajero to the highest output of 164 kW (223 PS; 220 hp) at 5,250 rpm with 318 N⋅m (235 lb⋅ft) of torque at 4,500 rpm in the Australian-made Magna Sports, VR-X and Verada GTV/GTVi and 180 kW (245 PS; 241 hp) at 5,500 rpm with 333 N⋅m (246 lb⋅ft) of torque at 4,000 rpm in the Magna Ralliart. For the MIVEC, only available in the Mitsubishi Pajero Evolution, the output is 209 kW (284 PS; 280 hp) at 6,000 and 324 N⋅m (239 lb⋅ft) at 4,500 rpm. It uses Multi-port fuel injection and uses forged steel connecting rods.

The gasoline direct injection version of the 6G74 was launched in April 1997 as the first GDI V6 engine ever produced. It differed from the basic 6G74 in many ways apart from its unique fuel injection system—it had a crown-curved rather than flat piston head, upright intake ports rather than angled, and a 10.4:1 rather than a 10.0:1 compression ratio. Mitsubishi claimed 30 percent better fuel economy, a 30 percent reduction in emissions, and higher power outputs than diesels.[4]

Applications edit

6G75 edit

The 6G75's output varied from 160 kW (218 PS; 215 hp) and 339 N⋅m (250 lb⋅ft) to 205 kW (279 PS; 275 hp) and 393 N⋅m (290 lb⋅ft) depending on application. In the interest of durability, the pistons were high-pressure castings attached to forged steel connecting rods that swing from a heat-treated forged steel crankshaft. Intended to be used with 95 RON fuel, lower octane fuels would be detected by the vehicle's knock sensors, and the engine detuned to compensate.

Specifications edit

  • Engine type: V type, single overhead camshaft
  • Bore × stroke: 95 mm × 90 mm (3.74 in × 3.54 in)
  • Displacement: 3,828 cc (3.8 L; 233.6 cu in)
  • Combustion chamber: pentroof type
  • Compression ratio: 10.5:1 (MIVEC), 10:1 (Non MIVEC)
  • Firing order: sequential 1-2-3-4-5-6
  • Lubrication system: Pressure feed, full-flow filtration
  • Lash adjusters on intake and exhaust
  • Fuel delivery system: Electronically controlled MFI
  • Fuel grade: Factory-tuned for 95 RON unleaded petrol
  • Ignition system: Electronically controlled 6-coil (non-distributor)
  • Lubrication system: Pressure feed, full-flow filtration
  • Oil pump type: Trochoid type

Applications edit

See also edit

 
Wikimedia Commons has media related to Mitsubishi 6G7 engines.

References edit

  1. ^ Büschi, Hans-Ulrich, ed. (5 March 1987). Automobil Revue 1987 (in German and French). Vol. 82. Berne, Switzerland: Hallwag AG. p. 404. ISBN 3-444-00458-3.
  2. ^ . Archived from the original on 2008-05-07. Retrieved 2009-08-11.
  3. ^ "The Mitsubishi 2.5 Liter V6 Engine". Allpar, LLC. 1995.
  4. ^ . Mitsubishi-Motors.com. Archived from the original on 2009-10-01. Retrieved 2006-03-16.

5. https://media.mitsubishicars.com/channels/2004-Galant/releases/d8fa6a4a-5172-57cd-7b04-a59f4b06fbf0

November 27, 2023
mitsubishi, engine, series, cyclone, engine, series, piston, engines, from, mitsubishi, motors, five, displacement, variants, were, produced, from, 1986, 2021, with, both, sohc, dohc, naturally, aspirated, turbo, charged, layouts, while, mivec, variable, valve. The 6G7 series or Cyclone V6 engine is a series of V6 piston engines from Mitsubishi Motors Five displacement variants were produced from 1986 to 2021 with both SOHC and DOHC naturally aspirated and turbo charged layouts While MIVEC variable valve timing has also been implemented in some versions the 2 5 3 0 and 3 5 L versions were also available with gasoline direct injection This engine has been the flagship powerplant of the company except when they briefly built a V8 in 1999 2001 The staple of their high end sedans it was given twin turbos for the Mitsubishi GTO and became the most powerful car ever built by the company at the time Mitsubishi 6G7 engine6G75 in a 2005 Mitsubishi Galant GTSOverviewManufacturerMitsubishi MotorsProduction1986 2021LayoutConfiguration60 V6Displacement2 0 3 8 L 121 9 233 6 cu in 1 998 3 828 cc Cylinder bore74 7 mm 2 94 in 83 5 mm 3 29 in 91 1 mm 3 59 in 93 mm 3 66 in 95 mm 3 74 in Piston stroke76 mm 2 99 in 85 8 mm 3 38 in 90 mm 3 54 in ValvetrainSOHC 2 valves cyl DOHC 4 valves cyl with MIVEC on some versions Compression ratio8 0 10 5 1CombustionSuperchargerOn Debonair only Turbochargerwith intercooler on some versions Fuel systemMulti port fuel injectionDirect injectionFuel typeGasolineOil systemPressure feed full flow filtration with Trochoid type oil pumpCooling systemWater cooledOutputPower output105 324 PS 77 238 kW 104 320 hp Torque output116 315 lb ft 157 427 N m DimensionsDry weightaround 155 kg 342 lb ChronologySuccessorMitsubishi 6B3 engine Contents 1 Bore and Stroke 2 6G71 2 1 Applications 3 6G72 3 1 Applications 4 6G73 4 1 Applications 5 6G74 5 1 Applications 6 6G75 6 1 Specifications 6 2 Applications 7 See also 8 ReferencesBore and Stroke editEngine code Displacement Bore stroke6G71 2 0 L 121 9 cu in 1 998 cc 74 7 mm 76 mm 2 94 in 2 99 in 6G72 3 0 L 181 4 cu in 2 972 cc 91 1 mm 76 mm 3 59 in 2 99 in 6G73 2 5 L 152 4 cu in 2 497 cc 83 5 mm 76 mm 3 29 in 2 99 in 6G74 3 5 L 213 4 cu in 3 497 cc 93 mm 85 8 mm 3 66 in 3 38 in 6G75 3 8 L 233 6 cu in 3 828 cc 95 mm 90 mm 3 74 in 3 54 in 6G71 editThe 6G71 model featured SOHC and produced 88 kW 120 PS 118 hp at 5 500 rpm and 172 N m 127 lbf ft at 4 500 rpm It was installed with two valves per cylinder and used Mitsubishi s ECI Multi multiple port fuel injection fuel delivery system The compression ratio was 8 9 1 An earlier version with single point fuel injection only had 105 PS 77 kW 104 hp at 5 000 rpm and 16 1 kg m 158 N m 116 lb ft at 4 000 rpm 1 A supercharger was installed and exclusive to the Debonair It produces 150 PS 110 kW 148 hp at 5 000 rpm and 221 N m 163 lbf ft at 3 000 rpm The compression ratio for the supercharged model is 8 0 1 The 6G71 engine was also converted to run on LPG a version which was only available to the Debonair and mainly intended for commercial taxi use Applications edit 1986 1990 Mitsubishi Galant 1986 1992 Mitsubishi Debonair 1990 1992 Mitsubishi Diamante Mitsubishi Sigma6G72 editThe 6G72 was manufactured in three different models which featured SOHC with 12 valves SOHC with 24 valves and DOHC with 24 valves The latest version was used in the Mitsubishi Eclipse GT and Galant Output in 2004 was 210 hp 157 kW 213 PS at 5500 rpm with 278 N m 205 lbf ft of torque at 4000 rpm In the older version used in many Chrysler models since 1987 this V6 was an SOHC 12 valve developing 141 hp 105 kW 143 PS at 5000 rpm and 172 lb ft 233 N m of torque at 3600 rpm The Mitsubishi models were with a 3 0L 6G72 engine SOHC 24 valve developing 195 hp 145 kW 198 PS at 5000 rpm and 205 lb ft 278 N m of torque at 4000 rpm For the MIVEC engine output was 273 PS 201 kW 269 hp at 6000 rpm and 304 N m 224 lb ft at 4500 rpm The SOHC 12 valve for the second generation of Pajero could produce up to 109 kW 148 PS 146 hp and 235 N m 173 lb ft whereas the SOHC 24 valve could produce up to 133 kW 181 PS 178 hp and 255 N m 188 lb ft The DOHC 24 valve was used in the Mitsubishi Debonair 3000GT and Dodge Stealth producing 222 hp 166 kW 225 PS and 205 lb ft 278 N m of torque with a 10 0 1 compression ratio in naturally aspirated form and as much as 320 hp 239 kW 324 PS and 315 lb ft 427 N m of torque in turbocharged form 2 The turbocharged variant had the lowest compression ratio at 8 0 1 with each bank of the V6 having its own independent turbocharger and intercooler Turbochargers were built by Mitsubishi Applications edit 1986 1992 Mitsubishi Debonair 1987 2000 Dodge Caravan Plymouth Voyager 1988 1989 Chrysler New Yorker 1988 1990 Dodge Raider 1988 1990 Mitsubishi Sigma 1988 1993 Dodge Dynasty 1988 2021 Mitsubishi Pajero aka Montero Shogun except in the GCC and Oceania 1989 1995 Dodge Spirit Plymouth Acclaim Chrysler Saratoga 1990 Chrysler Town amp Country early 1989 production only 1990 1991 Chrysler TC by Maserati 1990 1993 Dodge Daytona 1990 1993 Dodge Ram 50 1990 1995 Chrysler LeBaron 1990 1996 Mitsubishi Mighty Max 1990 1998 Hyundai Sonata 1990 1999 Mitsubishi GTO aka Mitsubishi 3000GT Dodge Stealth 1990 2002 Mitsubishi Diamante 1990 2006 Mitsubishi L200 1991 1996 Dodge Stealth 1991 1996 Mitsubishi Verada Australia 1992 1994 Dodge Shadow Plymouth Sundance 1993 2001 Mitsubishi Magna Australia 1994 2007 Mitsubishi Delica 1997 2007 Mitsubishi Pajero Sport aka Montero Sport aka Challenger in Australia 1999 2003 Mitsubishi Galant 1991 1999 Mitsubishi 3000GT 2000 2005 Mitsubishi Eclipse 2001 2005 Dodge Stratus Chrysler Sebring Coupe 2008 2011 Dodge Caravan China Chrysler Grand Voyager China 6G73 editThe 6G73 is a 24 valve SOHC design with two valves running off a single cam lobe on the exhaust valves using a forked rocker arm and each intake valve actuated with two cam lobes with a smaller bore than the 3 0L version of the same block Bore and stroke are 83 5 mm 76 mm 3 29 in 2 99 in it is a 60 degree V6 and weighs around 155 kg 342 lb The engine has low profile cast aluminum heads which help it to fit into compact engine bays while pent roof combustion chambers increase efficiency and make room for four valves per cylinder arranged in a cross flow pattern with a tumble intake port for both strong breathing and low emissions Spark plugs are centered in the combustion chambers The intake valves are 33 mm 1 30 in in diameter while exhaust valves are 29 mm 1 14 in The SOHC 24 valve version of the 6G72 uses these same cylinder heads A toothed timing belt is used The output of 6G73 is 163 PS 120 kW 161 hp at 5 900 rpm with 221 N m 163 lb ft of torque at 4 350 rpm 3 Applications edit 1990 2002 Mitsubishi Diamante 1993 1996 Mitsubishi Galant 1995 2000 Chrysler Cirrus 1995 2000 Chrysler Sebring 1995 2000 Dodge Stratus 1995 2000 Dodge Avenger6G74 editThe 6G74 is a 24 valve unit available with either SOHC DOHC or MIVEC DOHC Output for the SOHC version varies from 139 kW 189 PS 186 hp at 4 750 rpm with 306 N m 226 lb ft of torque at 3 750 rpm in the Pajero to the highest output of 164 kW 223 PS 220 hp at 5 250 rpm with 318 N m 235 lb ft of torque at 4 500 rpm in the Australian made Magna Sports VR X and Verada GTV GTVi and 180 kW 245 PS 241 hp at 5 500 rpm with 333 N m 246 lb ft of torque at 4 000 rpm in the Magna Ralliart For the MIVEC only available in the Mitsubishi Pajero Evolution the output is 209 kW 284 PS 280 hp at 6 000 and 324 N m 239 lb ft at 4 500 rpm It uses Multi port fuel injection and uses forged steel connecting rods The gasoline direct injection version of the 6G74 was launched in April 1997 as the first GDI V6 engine ever produced It differed from the basic 6G74 in many ways apart from its unique fuel injection system it had a crown curved rather than flat piston head upright intake ports rather than angled and a 10 4 1 rather than a 10 0 1 compression ratio Mitsubishi claimed 30 percent better fuel economy a 30 percent reduction in emissions and higher power outputs than diesels 4 Applications edit 1992 1998 Mitsubishi Debonair Japan 256 hp 191 kW 260 PS 1993 2021 Mitsubishi Pajero a k a Montero Shogun Only available in GCC area now 1997 2004 Mitsubishi Diamante 1999 2001 Mitsubishi Proudia 1999 2004 Mitsubishi Montero Sport 1999 2005 Mitsubishi Magna Verada 1999 2011 Mitsubishi Pajero Sport Mitsubishi Challenger 2005 2015Mitsubishi L200 L200 Sportero Japan General Countries 2008 2015 Mitsubishi Triton Japan Domestic Thailand Brazil and Middle East 6G75 editThe 6G75 s output varied from 160 kW 218 PS 215 hp and 339 N m 250 lb ft to 205 kW 279 PS 275 hp and 393 N m 290 lb ft depending on application In the interest of durability the pistons were high pressure castings attached to forged steel connecting rods that swing from a heat treated forged steel crankshaft Intended to be used with 95 RON fuel lower octane fuels would be detected by the vehicle s knock sensors and the engine detuned to compensate Specifications edit Engine type V type single overhead camshaft Bore stroke 95 mm 90 mm 3 74 in 3 54 in Displacement 3 828 cc 3 8 L 233 6 cu in Combustion chamber pentroof type Compression ratio 10 5 1 MIVEC 10 1 Non MIVEC Firing order sequential 1 2 3 4 5 6 Lubrication system Pressure feed full flow filtration Lash adjusters on intake and exhaust Fuel delivery system Electronically controlled MFI Fuel grade Factory tuned for 95 RON unleaded petrol Ignition system Electronically controlled 6 coil non distributor Lubrication system Pressure feed full flow filtration Oil pump type Trochoid typeApplications edit 2003 2021 Mitsubishi Pajero Montero 2004 2011 Mitsubishi Endeavor 2004 2009 Mitsubishi Galant 2005 2008 Mitsubishi 380 2006 2012 Mitsubishi EclipseSee also edit nbsp Wikimedia Commons has media related to Mitsubishi 6G7 engines List of Mitsubishi engines List of engines used in Chrysler products Hyundai Sigma engineReferences edit Buschi Hans Ulrich ed 5 March 1987 Automobil Revue 1987 in German and French Vol 82 Berne Switzerland Hallwag AG p 404 ISBN 3 444 00458 3 1996 Mitsubishi 3000GT Specs and Features Archived from the original on 2008 05 07 Retrieved 2009 08 11 The Mitsubishi 2 5 Liter V6 Engine Allpar LLC 1995 Press release Mitsubishi Motors Adds World First V6 3 5 liter GDI Engine to Ultra efficiency GDI Series Mitsubishi Motors com Archived from the original on 2009 10 01 Retrieved 2006 03 16 5 https media mitsubishicars com channels 2004 Galant releases d8fa6a4a 5172 57cd 7b04 a59f4b06fbf0 Retrieved from https en wikipedia org w index php title Mitsubishi 6G7 engine amp oldid 1180114142, wikipedia, wiki, book, books, library,

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