Onsite Crankshaft Grinding and Polishing is a practical way to refurbish worn or damaged crankpins and main journals without having to remove the complete crankshaft from the engine. Possible problems that can affect engine performance and may require immediate attention include scoring, taper, ovality, and bearing damage. Portable crankshaft grinders can do the job right at the engin... https://insitucrankshaftgrinding.com/