Mitsubishi 11A-13-26G7 Engine E W Crankshaft, Flywheel and Drive Plate, Cylinder Block

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11A-13-26G7 ENGINE (E - W) - Crankshaft, Flywheel and Drive Plate

Plastigauge

7EN0459

7EN0141

7EN0460

12 mm

7EN0461

INSPECTION

CRANKSHAFT OIL CLEARANCE (PLASTIGAUGE METHOD)

NOTE

If the oil clearance exceeds the limit, replace the bearing, and crankshaft if necessary.

This crankshaft oil clearance can be measured easily by using a plastic gauge, as follows:

1Remove oil and grease and any other foreign material from crankshaft journal and bearing inner surface.

2Install the crankshaft.

3Cut the plastigauge to the same length as the width of bearing and place it on journal in parallel with its axis.

4Gently place the crankshaft bearing cap over it and tighten the bolts to the specified torque.

5Remove the bolts and gently remove the crankshaft bearing cap.

6Measure the width of the crushed plastic gauge at its widest section by using a scale printed on the plastigauge package.

Standard values: 0.02 - 0.04 mm

Limit: 0.1 mm

CYLINDER BLOCK

(1)Visually check for scratches, rust and corrosion. Also use flaw detecting agents and the like to check for cracks. If there are any defects, rectify the cylinder block.

(2)Measure the flatness of the cylinder block top surface with a straight edge and a thickness gauge. During measurement, the cylinder block top surface must be free from gasket pieces and the like.

Standard values: 0.05 mm

Limit: 0.1 mm

(3)Check for scratches or seizure of the cylinder wall. If there are any defects, correct (bore it a oversize) or change the cylinder block.

(4)Measure the inside diameter and the ovality of the cylinder. If the cylinder is overly worn, correct it to a larger size and change the pistons and the piston rings.

Standard value:

Cylinder inside diameter 91.1 mm Ovality: 0.01 mm

E Mitsubishi Motors Corporation

Dec. 1996

PWEE9615

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Page 49 Page 51
Contents Contents 11A-0-111A-0-2 11A-0-3 General SpecificationsGeneral Information 11A-1-1 SpecificationsService Specifications Rework Dimensions 11A-1-2Torque Specifications 11A-1-311A-1-4 Intake manifold11A-1-5 SealantsFORM-IN-PLACE Gasket Disassembly11A-1-6 Surface PreparationSpecial Tools 11A-2-111A-2-2 11A-3-1 Removal and InstallationAlternator 11A-3-2 Removal Service PointsInstallation Service Points AA Crankshaft BoltAIR Intake Plenum 11A-4-111A-4-2 AA Throttle Body GasketIgnition System 11A-5-11113 Timing Belt11A-6-1 AA Timing Belt 11A-6-2Inspection AB Camshaft Sprocket BoltAA Camshaft Sprocket Bolt 11A-6-3AUTO-TENSIONER BA AUTO-TENSIONER11A-6-4 CA Timing Belt11A-6-5 Right bank Left bankDA Engine Support Bracket 11A-6-6Standard value 3.8 5.0 mm Intake Manifold 11A-7-1BA Thermostat 11A-7-2AA O-RING / Water Pipe CA Heater Inlet and Outlet PipesGainjector 11A-7-3FA Intake Manifold HA Fuel Pressure Regulator6G7 Engine E W Exhaust Manifold & Water Pump Exhaust Manifold & Water Pump11A-8-1 BA Exhaust Manifold Gasket 11A-8-26G7 Engine E W Exhaust Manifold & Water PumpKeep the O-ring free of oil grease 6G7 Engine E W Rocker Arms and Camshaft Rocker Arms and Camshaft11A-9-1 11A-9-26G7 Engine E W Rocker Arms and Camshaft Lash Adjuster Leak Down TestAA Lash Adjuster CamshaftAA Camshaft BA Lash Adjuster11A-9-3 CA Rocker ARM ShaftEA OIL Seal 11A-9-46G7 Engine E W Rocker Arms and CamshaftDA Rocker Shaft Spring 6G7 Engine E W Cylinder Head and Valves Cylinder Head and Valves11A-10-1 AC Valve Stem Seal 11A-10-26G7 Engine E W Cylinder Head and ValvesAA Cylinder Head Bolt AB Retainer Lock Do not reuse the stem sealValves 11A-10-3Cylinder Head Valve Spring11A-10-46G7 Engine E W Cylinder Head and Valves Valve Seat Reconditioning ProcedureValve Seat Replacement Procedure Valve GuideAA Valve Stem Seal Valve Guide Replacement Procedure11A-10-5 CA Valve Retainer Lock 11A-10-66G7 Engine E W Cylinder Head and ValvesBA Valve Spring OIL PAN and OIL Pump 11A-11-1AC OIL Pump Outer and Inner Rotors AA OIL PAN LowerAB OIL PAN Upper OIL PumpStandard value 0.10 0.18 mm Limit 0.35 mm 11A-11-3Standard value 0.04 0.10 mm AA OIL Pump Inner and Outer Rotors11A-11-46G7 Engine E W Oil Pan and Oil Pump CA OIL Seal DA OIL PAN UpperEA OIL PAN Lower Gaoil Pressure Switch11A-11-5 FA OIL Filter11A-12-1 Piston and Connecting ROD6G7 Engine E W Piston and Connecting Rod AB Piston PIN 11A-12-26G7 Engine E W Piston and Connecting RodAA Connecting ROD CAP Crankshaft PIN OIL Clearance Plastigauge Method 11A-12-3Piston Ring Standard values 7,350 17,200 N 11A-12-46G7 Engine E W Piston and Connecting RodAA Piston PIN Side rail may break if a ring expander is used 11A-12-5BA OIL Ring CA Piston Ring no / Piston Ring noEA Connecting ROD CAP 11A-12-66G7 Engine E W Piston and Connecting RodDA Piston and Connecting ROD Standard value 0.10 0.25 mm Limit 0.4 mmCRANKSHAFT, Flywheel and Drive Plate 6G7 Engine E W Crankshaft, Flywheel and Drive Plate 11A-13-1Standard values 0.02 0.04 mm Limit 0.1 mm 11A-13-26G7 Engine E W Crankshaft, Flywheel and Drive PlateCrankshaft OIL Clearance Plastigauge Method Cylinder BlockClearance between piston and cylinder 02 0.04 mm Boring CylinderPiston size identification 11A-13-46G7 Engine E W Crankshaft, Flywheel and Drive Plate AA Crankshaft Bearing6G7 Engine E W Crankshaft, Flywheel and Drive Plate 11A-13-5 BA Bearing CAP / Bearing BoltCA Crankshaft Rear OIL Seal 11A-13-66G7 Engine E W Crankshaft, Flywheel and Drive PlateStandard value 0.05 0.25 mm Limit 0.3 mm DA OIL Seal Case

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.
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