When preparing an engine to use cast-iron piston rings the cylinders must be honed to a surface finish of ________ microinches.

Name: When preparing an engine to use cast-iron piston rings the cylinders must be honed to a surface finish of ________ microinches.
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Question

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The correct surface finish for cylinders to use cast-iron piston rings is 20 to 30 microinches. This range provides the necessary roughness for proper seating and sealing of the rings while allowing for efficient movement and minimal wear.

When Preparing an Engine to Use Cast-Iron Piston Rings the Cylinders