What is the torque on the head bolts on a 22re?
The Toyota 22RE engine is a popular and reliable inline-four engine found in many Toyota vehicles, particularly in the 1980s and early 1990s. Proper maintenance and repair are essential to keep this engine running smoothly, and one critical aspect of engine assembly is ensuring the correct torque on the head bolts. In this article, we’ll discuss the torque specifications for the 22RE engine and provide tips for achieving accurate results.
Understanding Torque Specifications
Torque specifications are crucial when assembling an engine because they ensure that components are tightened to the correct level. Over-tightening can lead to damage, while under-tightening can result in leaks or mechanical failure. For the 22RE engine, the head bolts must be torqued to precise specifications to maintain a proper seal between the cylinder head and the engine block.
Torque Specifications for 22RE Head Bolts
When working on a 22RE engine, the head bolts should be tightened in a specific sequence and to the following torque specifications:
- Initial torque: 33 ft-lbs (foot-pounds)
- Final torque: 58 ft-lbs (foot-pounds)
It’s important to follow the tightening sequence outlined in the service manual to ensure even pressure distribution across the cylinder head. This helps prevent warping or damage to the head gasket.
Steps to Properly Torque 22RE Head Bolts
To achieve the correct torque on the head bolts, follow these steps:
- Step 1: Clean the threads on both the bolts and the bolt holes in the engine block. This ensures accurate torque readings and prevents debris from interfering with the tightening process.
- Step 2: Apply a light coat of engine oil to the threads of the bolts. This reduces friction and allows for more accurate torque application.
- Step 3: Tighten the bolts in the specified sequence to the initial torque of 33 ft-lbs.
- Step 4: Once all bolts are tightened to the initial torque, repeat the sequence and tighten them to the final torque of 58 ft-lbs.
- Step 5: Double-check all bolts to ensure they are torqued to the correct final specification.
Tips for Success
Here are some additional tips to ensure success when torquing the head bolts on a 22RE engine:
- Use a high-quality torque wrench that has been recently calibrated for accuracy.
- Follow the tightening sequence provided in the service manual to avoid uneven pressure on the cylinder head.
- Inspect the head bolts for any signs of wear or damage before reuse. Replace them if necessary.
- Consider using new head bolts if the old ones have been stretched or damaged during previous use.
Conclusion
Properly torquing the head bolts on a 22RE engine is essential for maintaining engine performance and preventing issues such as leaks or head gasket failure. By following the torque specifications and steps outlined above, you can ensure a successful repair or rebuild. If you’re unsure about any part of the process, don’t hesitate to consult a professional mechanic or reach out to Kevin’s Autos for expert advice and service!
Frequently Asked Questions
What are the torque specs for head bolts?
1> Small Engines (e.g., motorcycles, small cars): Typically, the torque for cylinder head bolts might range from about 60 to 100 foot-pounds (ft-lbs) or 80 to 135 Newton-meters (Nm).
What is the torque on a 22re intake bolt?
Torque:14 ft.lbs. (
I recently changed the head and intake manifold valve cover ...
What is the torque for head bolts on a Toyota?
Torque: 44 Nm (450 kgf.cm, 33 ft. lbf). If any one of the cylinder head bolts does not meet the torque specification, replace the cylinder head bolt.
How much torque does a 22re have?
The first fuel injected 22R-E engines appeared in August 1982. Output of these engines is commonly rated at 78 kW (105 hp; 106 PS) at 4,800 rpm and 185 N⋅m (136 lb⋅ft) at 2,800 rpm. In 1985, the engine was significantly reworked, output was up to 84 kW (113 hp; 114 PS) at 4,800 rpm and 190 N⋅m (140 lb⋅ft) at 3,600 rpm.
What is the torque of a 22R engine?
Torque: 80 ft. lbs. (108 N.m , 1,100 kgf-cm).
Should you torque head bolts?
The fasteners holding your heads in place should stay tight based on the right torque value, not on gobs of thread locker.
What is the torque spec for a 22re head bolt?
58-63 ft lbs.
Should I re torque my head bolts?
Do You Need To Retorque Head Bolts After Break In? Should I retorque head bolts? Yep, that seems to be a big question on the web and it gets, like most questions on the internet, a variety of answers. In short, at least here in 2020, the answer is no, you don't have to retorque head fasteners, maybe.
What is the head torque specs for a 1986 Toyota 22R?
22r are not dohc they are sohc and the CORRECT torq spec is 62ftlbs with head bolts and 70 ftlbs for head studs.
What is the torque setting for the bolts?
ASTM A449 / SAE Grade 5*
| Bolt Size | TPI | Tightening Torque (ft lbs) |
|---|---|---|
| Plain | ||
| 1⁄2 | 13 | 75 |
| 9⁄16 | 12 | 109 |
| 5⁄8 | 11 | 150 |
