Mitsubishi Piston and Connecting ROD, 11A-12-1, 6G7 Engine E W Piston and Connecting Rod

Page 43

6G7 ENGINE (E - W) - Piston and Connecting Rod

11A-12-1

12. PISTON AND CONNECTING ROD

REMOVAL AND INSTALLATION

Apply engine oil to all moving parts before installation.

51 Nm

Removal steps

1.Connecting rod cap nut

AA" "EA 2. Connecting rod cap

3.Connecting rod bearing, lower "DA 4. Piston and connecting rod assem-

bly

5.Connecting rod bearing, upper "CA 6. Piston ring No. 1

7EN0424

"CA 7. Piston ring No. 2 "BA 8. Oil ring

AB" "AA 9. Piston pin

10.Piston

11.Connecting rod

12.Connecting rod cap bolt

E Mitsubishi Motors Corporation

Dec. 1996

PWEE9615

Image 43

Contents 11A-0-1 Contents11A-0-2 General Information General Specifications11A-0-3 Service Specifications Specifications11A-1-1 11A-1-2 Rework Dimensions11A-1-3 Torque SpecificationsIntake manifold 11A-1-4Sealants 11A-1-5Surface Preparation Disassembly11A-1-6 FORM-IN-PLACE Gasket11A-2-1 Special Tools11A-2-2 Alternator Removal and Installation11A-3-1 AA Crankshaft Bolt Removal Service PointsInstallation Service Points 11A-3-211A-4-1 AIR Intake PlenumAA Throttle Body Gasket 11A-4-211A-5-1 Ignition System11A-6-1 Timing Belt1113 AB Camshaft Sprocket Bolt 11A-6-2Inspection AA Timing BeltBA AUTO-TENSIONER 11A-6-3AUTO-TENSIONER AA Camshaft Sprocket BoltCA Timing Belt 11A-6-4Right bank Left bank 11A-6-5Standard value 3.8 5.0 mm 11A-6-6DA Engine Support Bracket 11A-7-1 Intake ManifoldCA Heater Inlet and Outlet Pipes 11A-7-2AA O-RING / Water Pipe BA ThermostatHA Fuel Pressure Regulator 11A-7-3FA Intake Manifold Gainjector11A-8-1 Exhaust Manifold & Water Pump6G7 Engine E W Exhaust Manifold & Water Pump Keep the O-ring free of oil grease 11A-8-26G7 Engine E W Exhaust Manifold & Water PumpBA Exhaust Manifold Gasket 11A-9-1 Rocker Arms and Camshaft6G7 Engine E W Rocker Arms and Camshaft Camshaft Lash Adjuster Leak Down TestAA Lash Adjuster 11A-9-26G7 Engine E W Rocker Arms and CamshaftCA Rocker ARM Shaft BA Lash Adjuster11A-9-3 AA CamshaftDA Rocker Shaft Spring 11A-9-46G7 Engine E W Rocker Arms and CamshaftEA OIL Seal 11A-10-1 Cylinder Head and Valves6G7 Engine E W Cylinder Head and Valves Do not reuse the stem seal 11A-10-26G7 Engine E W Cylinder Head and ValvesAA Cylinder Head Bolt AB Retainer Lock AC Valve Stem SealValve Spring 11A-10-3Cylinder Head ValvesValve Guide Valve Seat Reconditioning ProcedureValve Seat Replacement Procedure 11A-10-46G7 Engine E W Cylinder Head and Valves11A-10-5 Valve Guide Replacement ProcedureAA Valve Stem Seal BA Valve Spring 11A-10-66G7 Engine E W Cylinder Head and ValvesCA Valve Retainer Lock 11A-11-1 OIL PAN and OIL PumpOIL Pump AA OIL PAN LowerAB OIL PAN Upper AC OIL Pump Outer and Inner RotorsAA OIL Pump Inner and Outer Rotors 11A-11-3Standard value 0.04 0.10 mm Standard value 0.10 0.18 mm Limit 0.35 mmCA OIL Seal DA OIL PAN Upper 11A-11-46G7 Engine E W Oil Pan and Oil PumpFA OIL Filter Gaoil Pressure Switch11A-11-5 EA OIL PAN Lower6G7 Engine E W Piston and Connecting Rod Piston and Connecting ROD11A-12-1 AA Connecting ROD CAP 11A-12-26G7 Engine E W Piston and Connecting RodAB Piston PIN Piston Ring 11A-12-3Crankshaft PIN OIL Clearance Plastigauge Method AA Piston PIN 11A-12-46G7 Engine E W Piston and Connecting RodStandard values 7,350 17,200 N CA Piston Ring no / Piston Ring no 11A-12-5BA OIL Ring Side rail may break if a ring expander is usedStandard value 0.10 0.25 mm Limit 0.4 mm 11A-12-66G7 Engine E W Piston and Connecting RodDA Piston and Connecting ROD EA Connecting ROD CAP6G7 Engine E W Crankshaft, Flywheel and Drive Plate 11A-13-1 CRANKSHAFT, Flywheel and Drive PlateCylinder Block 11A-13-26G7 Engine E W Crankshaft, Flywheel and Drive PlateCrankshaft OIL Clearance Plastigauge Method Standard values 0.02 0.04 mm Limit 0.1 mmPiston size identification Boring CylinderClearance between piston and cylinder 02 0.04 mm AA Crankshaft Bearing 11A-13-46G7 Engine E W Crankshaft, Flywheel and Drive PlateBA Bearing CAP / Bearing Bolt 6G7 Engine E W Crankshaft, Flywheel and Drive Plate 11A-13-5DA OIL Seal Case 11A-13-66G7 Engine E W Crankshaft, Flywheel and Drive PlateStandard value 0.05 0.25 mm Limit 0.3 mm CA Crankshaft Rear OIL Seal

6G7 specifications

The Mitsubishi 6G7 engine is a robust V6 gasoline engine that has garnered attention for its blend of performance and efficiency. Primarily designed for use in a variety of Mitsubishi vehicles, including sedans and SUVs, the 6G7 series illustrates the engineering prowess of Mitsubishi in creating reliable and powerful engines.

One of the standout features of the 6G7 engine is its V6 configuration, which provides a good balance of power and smoothness. This engine typically displaces 3.0 liters, though variants exist with slightly different displacements. The 6G7 showcases a double overhead camshaft (DOHC) design, which facilitates efficient airflow and enhances power output. This configuration allows the engine to produce a substantial amount of horsepower while maintaining fuel efficiency, making it an attractive option for both performance-driven drivers and those focused on daily commuting.

In terms of technology, the 6G7 utilizes Mitsubishi’s advanced fuel injection system, which optimizes the fuel-air mixture for efficient combustion. This not only contributes to improved power output but also helps in reducing emissions, making the engine more environmentally friendly. Additionally, the integration of a variable valve timing (VVT) system enhances the engine's performance across various RPM ranges, providing both low-end torque and high-end power.

The 6G7 is designed with durability in mind. It features a robust iron block and aluminum alloy cylinder heads, which contribute to the engine's longevity and overall reliability. The use of advanced materials and manufacturing techniques helps to minimize wear and extend the lifespan of critical components.

Another important characteristic of the 6G7 engine is its smooth operation. The V6 configuration inherently provides balance, reducing vibrations and ensuring a refined driving experience. Coupled with a well-tuned exhaust system, the engine produces a pleasing sound that enhances the overall driving experience without being overwhelming.

In conclusion, the Mitsubishi 6G7 engine series stands out for its combination of power, efficiency, and durability. With advanced technologies like DOHC, VVT, and an efficient fuel injection system, the 6G7 remains a popular choice in various Mitsubishi models. Its smooth operation and robust construction further establish it as a reliable engine, appealing to a wide range of drivers seeking performance without sacrificing efficiency. The 6G7 serves as a testament to Mitsubishi's commitment to engineering excellence and innovation in the automotive industry.