Which tool is used to check the twist of a connecting rod?

The correct tool for checking the twist of a connecting rod is the use of push fit arbors and parallel bars. This method involves using a combination of precisely calibrated components to secure the connecting rod in place while measuring any distortion or twist that may be present. The parallel bars provide a reference plane, allowing for an accurate assessment of the alignment and straightness of the connecting rod.

Push fit arbors are specifically designed to hold the connecting rod tightly, ensuring there is no movement that could skew the measurement. This capability makes it particularly effective for identifying even slight variations in twist, which can significantly impact the performance and reliability of an engine.

Using this system allows technicians to diagnose potential issues with the connecting rod before it is installed, which can prevent further mechanical problems and enhance engine efficiency. Other tools may measure different characteristics such as thickness or general alignment, but they do not provide the specific functionality needed for assessing twist directly.