What is the biggest torqued down bolt in a car

## The Biggest Torqued Bolt in a Car

Every car has bolts and nuts that hold it together. Some of these bolts are torqued to very high specifications, while others are only torqued to a few foot-pounds. The biggest torqued bolt in a car is typically the crankshaft bolt.

### The Crankshaft Bolt

The crankshaft bolt is located at the front of the engine and connects the crankshaft to the flywheel. The crankshaft bolt is responsible for transmitting the power of the engine to the transmission. It is also responsible for keeping the crankshaft in place.

The crankshaft bolt is typically torqued to between 200 and 300 foot-pounds. This is a very high torque specification, and it is important to use a torque wrench to ensure that the bolt is torqued to the correct specification.

### Other High-Torque Bolts

In addition to the crankshaft bolt, there are a number of other bolts in a car that are torqued to high specifications. These bolts include:

Cylinder head bolts: These bolts hold the cylinder head in place on the engine block. They are typically torqued to between 70 and 90 foot-pounds.
Connecting rod bolts: These bolts connect the connecting rods to the crankshaft. They are typically torqued to between 50 and 70 foot-pounds.
Main bearing bolts: These bolts hold the main bearings in place on the crankshaft. They are typically torqued to between 100 and 120 foot-pounds.

### The Importance of Proper Torque

It is important to torque bolts to the correct specification because over-tightening or under-tightening can lead to problems. Over-tightening a bolt can stretch the bolt and weaken it, making it more likely to fail. Under-tightening a bolt can allow it to loosen, which can lead to a variety of problems, such as leaks or even engine failure.

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When torquing a bolt, it is important to use a torque wrench. A torque wrench is a tool that measures the amount of torque that is applied to a bolt. This ensures that the bolt is torqued to the correct specification.

### Conclusion

The biggest torqued bolt in a car is typically the crankshaft bolt. This bolt is responsible for transmitting the power of the engine to the transmission and keeping the crankshaft in place. It is important to torque the crankshaft bolt to the correct specification using a torque wrench.

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