About the 6G72 Engine
The 6G72 engine is a V6 engine that was produced by Mitsubishi Motors. It was first introduced in 1986 and has been used in various Mitsubishi models, including the 3000GT, Diamante, and Montero. The 6G72 engine is known for its performance and reliability, making it a popular choice among car enthusiasts.
Head Bolt Torque Specifications
To ensure the proper functioning of the 6G72 engine, it is crucial to tighten the head bolts to the correct torque specifications. The head bolts play a vital role in securing the cylinder head to the engine block, ensuring a tight seal and preventing any leaks. Here are the recommended head bolt torque specifications for the 6G72 engine:
| Stage | Torque (ft. lbs.) | Torque (Nm) |
|---|---|---|
| Stage 1 | 22-25 | 30-34 |
| Stage 2 | 51-54 | 69-74 |
| Stage 3 | 72-76 | 98-103 |
Procedure for Torquing Head Bolts
To properly torque the head bolts on a 6G72 engine, follow these steps:
1. Start by cleaning the threads of the head bolts and the bolt holes in the engine block. This will ensure proper engagement and accurate torque readings.
2. Apply a small amount of engine oil to the threads of each head bolt. This will help reduce friction during the torquing process.
3. Begin torquing the head bolts in a specific sequence. It is important to follow the correct sequence to ensure even distribution of torque. The sequence may vary depending on the specific model, so it is recommended to consult the vehicle’s service manual for the exact sequence.
4. Use a torque wrench to tighten the head bolts to the specified torque for each stage. Start with Stage 1 and gradually move to Stage 2 and Stage 3, following the recommended torque values.
5. After completing each stage, double-check the torque on each head bolt to ensure it matches the specified value. This will help ensure that all bolts are properly tightened.
6. Once all the head bolts have been torqued to the correct specifications, the cylinder head is securely fastened to the engine block, providing a reliable seal.
By following these torque specifications and proper torquing procedure, you can ensure the longevity and performance of your 6G72 engine. It is important to note that these specifications are general guidelines, and it is always recommended to consult the vehicle’s service manual for the specific torque values and sequence for your particular model.