About the 6G72 Engine
The 6G72 engine is a V6 engine that was manufactured by Mitsubishi Motors. It was first introduced in 1986 and has been used in various Mitsubishi models over the years. The 6G72 engine is known for its power and performance, making it a popular choice among car enthusiasts. One important aspect of maintaining this engine is ensuring that the head bolts are torqued to the correct specifications. Proper torque is essential to prevent any leaks or damage to the engine. In this article, we will provide you with the head bolt torque specs for the 6G72 engine.
6G72 Head Bolt Torque Specifications
To ensure the proper installation of the cylinder head on the 6G72 engine, it is crucial to follow the recommended torque specifications. The table below provides the head bolt torque specs in both foot-pounds (ft. lbs.) and Newton-meters (Nm):
| Head Bolt | Torque Specification (ft. lbs.) | Torque Specification (Nm) |
|---|---|---|
| 1-10 | 22-25 | 30-34 |
| 11-14 | 43-47 | 58-64 |
| 15-18 | 65-69 | 88-94 |
| 19-22 | 80-84 | 108-114 |
| 23-26 | 95-100 | 129-136 |
| 27-30 | 110-115 | 149-156 |
Steps to Torque the Head Bolts
To torque the head bolts of the 6G72 engine, follow these steps:
1. Start by cleaning the threads of the head bolts and the bolt holes in the engine block to ensure proper engagement and accurate torque readings.
2. Apply a small amount of engine oil to the threads of each head bolt.
3. Begin by tightening all the head bolts in a crisscross pattern to 22-25 ft. lbs. (30-34 Nm) of torque. This initial torque will help evenly distribute the load on the cylinder head.
4. Next, repeat the crisscross pattern and tighten the head bolts to 43-47 ft. lbs. (58-64 Nm) of torque.
5. Continue the crisscross pattern and torque the head bolts to 65-69 ft. lbs. (88-94 Nm).
6. Repeat the process, increasing the torque to 80-84 ft. lbs. (108-114 Nm), then 95-100 ft. lbs. (129-136 Nm), and finally 110-115 ft. lbs. (149-156 Nm).
7. Double-check all the head bolts to ensure they are tightened to the correct torque specifications.
By following these torque specifications and steps, you can ensure that the head bolts of your 6G72 engine are properly tightened, providing a secure seal and preventing any potential issues.
Remember, it is essential to consult the specific service manual for your vehicle to ensure accuracy, as torque specifications may vary slightly depending on the model and year of your Mitsubishi vehicle.
Conclusion
Properly torquing the head bolts of the 6G72 engine is crucial for maintaining its performance and preventing any leaks or damage. By following the recommended torque specifications and steps outlined in this article, you can ensure that the head bolts are tightened correctly. Always refer to the service manual for your specific vehicle to ensure accuracy.