If an engine has a Bore of 2.5 inches and a Stroke of 3.25 inches, what is its displacement?

To determine the engine displacement, you can use the formula for calculating the displacement of a single cylinder engine, which is given by:

Displacement = (Bore^2 × π / 4) × Stroke

In this scenario, the bore is 2.5 inches and the stroke is 3.25 inches.

First, calculate the area of the bore:

• Bore^2 = (2.5 inches)² = 6.25 square inches
• To find the area of the circle, multiply by π/4:
• Area = (6.25 × π) / 4 ≈ 4.9087 square inches

Next, multiply this area by the stroke to find the displacement:

• Displacement = 4.9087 square inches × 3.25 inches ≈ 15.95 cubic inches

When approximated, this value rounds to 16 cubic inches. Therefore, this result aligns with the answer. The calculation method and result confirm that the answer of 16 cubic inches is the correct representation of the engine displacement based on the provided bore and stroke measurements.