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

11A-10-5

14.0 mm

7EN0726

VALVE GUIDE REPLACEMENT PROCEDURE

(1)Remove the snap ring from the exhaust valve guide.

(2)Pull out to the cylinder block side using a press.

(3)Machine the valve guide hole in the cylinder head to match the oversize valve guide to be press fitted.

Caution

D Do not press fit another valve guide of the same size.

Diameter of the valve guide hole

0.05O.S. 11.05 - 11.07 mm

0.25O.S. 11.25 - 11.27 mm

0.50O.S. 11.50 - 11.52 mm

(4)Press fit the valve guide until the projection is 14.0 mm, as shown.

NOTE

D Press fit the valve guide from the top surface of the cylinder head.

D Pay attention to the difference in the valve guide length (45.5 mm for the intake side valve guide and 50.5 mm for the exhaust side valve guide).

D After press fitting the valve guide, insert a new valve and check the contact between the valve guide and the valve.

I.D. Colour

I.D. ColourBlack Silver or white

Intake side

Exhaust side

7EN0763

MD998774

6AE0169

E Mitsubishi Motors Corporation

Dec. 1996

INSTALLATION SERVICE POINTS

"AA VALVE STEM SEAL

(1)Attach a valve spring seat.

(2)Attach a new stem seal to the valve guide with the Special Tool.

NOTE

Pay attention to the difference between the intake side and exhaust side valve stem seals.

Identifying colour at the valve stem seal portion Intake side: Silver or white

Exhaust side: Black

Caution

D Do not reuse valve stem seals.

D Always use the Special Tool to install valve stem seals. Improper installation will cause oil leaks.

PWEE9615

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Mitsubishi 6G7 specifications 11A-10-5, Valve Guide Replacement Procedure, AA Valve Stem 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.