Mitsubishi 6G7 specifications 11A-10-3, Cylinder Head, Valves, Valve Spring

Models: 6G7

1 55
Download 55 pages 41.15 Kb
Page 34
Image 34

6G7 ENGINE (E - W) - Cylinder Head and Valves

11A-10-3

7EN0258

Contact to be at

 

the centre of the

 

valve face.

Margin

 

6EN0542

INSPECTION

CYLINDER HEAD

(1)Check the cylinder head for water leaks, gas leaks, damage or cracks before washing it.

(2)Completely remove oil, fur, sealer, carbon and the like. After washing the oil passages, blow air through them to make sure they are not clogged.

(3)To ensure flatness of the cylinder head bottom surface, measure the distortion of the surface using a straight edge and a thickness gauge. When the distortion exceeds the specifications, correct by grinding the surface.

Standard values of bottom surface distortion: Within 0.03 mm

Limit: 0.2 mm

Grinding limit: 0.2 mm

Height of the cylinder head: 120 mm

Caution

D The cylinder head bottom surface may be ground to within 0.2 mm of the mating cylinder block.

VALVES

(1)When contact between the valve and the valve seat is improper, unbalanced or nonexistent, correct the valve seat.

(2)Change the valve when the margin doesn’t meet the specifications.

Standard value: Intake 1.0 mm

Exhaust 1.2 mm

Limit:Intake 0.5 mm

Exhaust 0.7 mm

(3)Measure the total length of the valve. If the measured value is below the limit, change the valve.

Standard value: Intake 112.30 mm

Exhaust 114.11 mm

Limit:Intake 111.80 mm

Exhaust 113.61 mm

2_

Free height

1EN0264

E Mitsubishi Motors Corporation

Dec. 1996

VALVE SPRING

(1)Measure the free height of the valve spring. When the measured value exceeds the specified limit, change the valve spring.

Standard value: 51.0 mm

Limit: 50.0 mm

(2)Measure the perpendicularity of the valve spring. When the measured value exceeds the specified limit, change the valve spring.

Standard value: 2_ max.

Limit: 4_

PWEE9615

Page 34
Image 34
Mitsubishi 6G7 specifications 11A-10-3, Cylinder Head, Valves, Valve Spring

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.