About the 22RE Engine
The 22RE engine is a popular four-cylinder engine produced by Toyota. It was introduced in the early 1980s and has been used in various Toyota models, including the Toyota Pickup and 4Runner. Known for its reliability and durability, the 22RE engine has become a favorite among off-road enthusiasts and everyday drivers alike. One crucial aspect of maintaining this engine is ensuring the proper torque specifications for the head bolts. In this article, we will provide you with the necessary torque specs for the 22RE head bolts.
22RE Head Bolt Torque Specifications
To ensure the proper sealing of the cylinder head to the engine block, it is crucial to tighten the head bolts to the correct torque specifications. The table below provides the recommended torque values for the 22RE head bolts in both foot-pounds (ft. lbs.) and Newton meters (Nm).
| Head Bolt | Torque Specifications (ft. lbs.) | Torque Specifications (Nm) |
|---|---|---|
| 1-10 | 22 | 30 |
| 11-20 | 58 | 79 |
| 21-25 | 80 | 108 |
Step-by-Step Guide to Torque the Head Bolts
To properly torque the head bolts on your 22RE engine, follow these steps:
1. Start by cleaning the threads of the head bolts and the bolt holes in the engine block using a suitable cleaning agent. This will ensure accurate torque readings and proper thread engagement.
2. Apply a small amount of engine oil or assembly lubricant to the threads and washer surface of each head bolt. This will help reduce friction and ensure consistent torque readings.
3. Begin by tightening all head bolts to 22 ft. lbs. (30 Nm) using a torque wrench in the specified sequence. The sequence typically involves tightening the bolts in a crisscross pattern, starting from the center and working your way outwards.
4. Once all the bolts have been initially torqued, repeat the sequence and tighten them to 58 ft. lbs. (79 Nm).
5. Finally, make a third pass in the same sequence and torque the bolts to 80 ft. lbs. (108 Nm).
Final Thoughts
Properly torquing the head bolts on your 22RE engine is crucial to ensure a reliable and leak-free seal between the cylinder head and the engine block. By following the recommended torque specifications and the step-by-step guide provided in this article, you can confidently perform this important maintenance task. Remember to always consult your vehicle’s service manual for specific torque values and procedures, as they may vary depending on the year and model of your Toyota vehicle.