Is straightening nitrided crankshafts recommended?

Nitrided crankshafts are treated through a process that enhances their surface hardness and durability, making them more resistant to wear. However, this treatment also modifies their structural integrity. Straightening a nitrided crankshaft is generally not recommended because the process of straightening can compromise the hardened surface layer and lead to a reduction in the component's overall strength and performance.

The risks associated with straightening a nitrided crankshaft include possible cracking or distortion and a loss of the beneficial properties gained from the nitriding process. Given the vital role that crankshafts play in engine performance and reliability, it is crucial to avoid actions that could jeopardize their integrity. Therefore, the decision against straightening nitrided crankshafts is based on the need to maintain their enhanced properties and ensure safe operation.