What is the bore of an engine cylinder?

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Multiple Choice

What is the bore of an engine cylinder?

Explanation:
The bore is the internal diameter of the engine cylinder—the width across the bore where the piston moves. This horizontal dimension defines how large the combustion chamber is laterally and, together with the stroke (the piston’s travel distance), determines engine displacement. It’s different from the stroke, which is the vertical distance the piston travels; it’s also not the piston diameter, which is the size of the piston itself (the piston must fit inside the bore, but that’s a separate measurement). Cylinder height isn’t a standard term used to describe bore. So, bore = internal diameter of the cylinder.

The bore is the internal diameter of the engine cylinder—the width across the bore where the piston moves. This horizontal dimension defines how large the combustion chamber is laterally and, together with the stroke (the piston’s travel distance), determines engine displacement.

It’s different from the stroke, which is the vertical distance the piston travels; it’s also not the piston diameter, which is the size of the piston itself (the piston must fit inside the bore, but that’s a separate measurement). Cylinder height isn’t a standard term used to describe bore.

So, bore = internal diameter of the cylinder.

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