Understanding Torque: Unit Conversion and Automotive Parts

Torque is a fundamental concept in mechanics and engineering, representing the rotational force applied to an object. It's what makes things turn, from a simple screw to the wheels of a car. Mechanics and engineers often need to convert between different units of torque, such as Newton-meters (Nm) and foot-pounds (ft-lb). Our free Torque Converter tool is designed for exactly that purpose, providing quick and accurate unit conversions.

Confusingly, the term "torque converter" also refers to a critical component in vehicles with automatic transmissions. This device acts as a fluid coupling between the engine and transmission, allowing the car to stop without stalling the engine. Below, we provide answers to common questions about this automotive part, alongside our handy unit conversion tool.

How to Use the Torque Unit Converter

1. Enter Your Value: Type the numeric value of the torque you want to convert.
2. Select Units: Choose your starting unit (e.g., ft-lb) and your target unit (e.g., Nm) from the dropdown lists.
3. Convert: Click the "Convert Torque" button for an instant calculation.
4. Copy Result: Use the "Copy Result" button to easily copy the value for your specifications or reports.

Frequently Asked Questions About Automotive Torque Converters

What is the torque converter?

In an automatic transmission, a torque converter is a fluid coupling that connects the engine to the transmission. Its primary job is to allow the engine to keep running even when the car is stopped, and to multiply the engine's torque at low speeds to help the car accelerate smoothly.

What happens when a torque converter goes bad?

When a torque converter fails, you may notice several symptoms: shuddering or vibrating, especially at certain speeds; slipping, where the engine RPMs increase but the car doesn't accelerate accordingly; overheating of the transmission; and unusual noises like whirring or clunking. Contaminated transmission fluid is also a key indicator.

Can you drive a car with a bad torque converter?

While you might be able to drive a short distance with a bad torque converter, it is strongly advised against. Continuing to drive can cause catastrophic damage to the entire transmission system as metal debris from the failing converter circulates through the transmission fluid. This can turn a single component repair into a full transmission replacement.

How do you diagnose a bad torque converter?

Diagnosing a bad torque converter involves checking for common symptoms like slipping, shuddering, and overheating. A mechanic will typically perform a stall speed test, which measures the maximum engine RPM achieved when the transmission is in gear but the brakes are fully applied. If the stall speed is too high or too low, it points to a converter issue. Scanning for diagnostic trouble codes and checking the transmission fluid for debris are also key diagnostic steps.

Can you replace a torque converter without removing the transmission?

No, it is not possible to replace a torque converter without removing the transmission from the vehicle. The torque converter is located between the engine's flexplate and the transmission's input shaft, housed within the transmission bell housing. To access and replace it, the entire transmission assembly must be unbolted and separated from the engine.