Gallons Per Cubic Inch Calculator Bore Stroke

Gallons per in³ Calculation:

\[ \text{Gallons per in³} = \frac{1}{231} \]

Engine Displacement:

Gallons per Cubic Inch:

Total Volume:

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1. What is Gallons per Cubic Inch?

The gallons per cubic inch constant (1/231) is used to convert engine displacement measurements between cubic inches and gallons. This is particularly useful in automotive and engineering applications where fluid volume calculations are needed.

2. How Does the Calculator Work?

The calculator uses these formulas:

\[ \text{Displacement} = \pi \times \left(\frac{\text{Bore}}{2}\right)^2 \times \text{Stroke} \times \text{Cylinders} \] \[ \text{Gallons per in³} = \frac{1}{231} \] \[ \text{Total Gallons} = \text{Displacement} \times \frac{1}{231} \]

Where:

\( \text{Bore} \) — Cylinder diameter in inches
\( \text{Stroke} \) — Piston travel length in inches
\( \text{Cylinders} \) — Number of cylinders in the engine
231 — Cubic inches per US gallon constant

3. Importance of Engine Displacement Calculation

Details: Engine displacement is a key specification that affects power output, fuel efficiency, and torque characteristics. Converting this to gallons helps in fuel system design and fluid capacity planning.

4. Using the Calculator

Tips: Enter bore diameter and stroke length in inches, and the number of cylinders. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is the constant 1/231 used?
A: This is because 1 US gallon is defined as exactly 231 cubic inches.

Q2: How accurate is this calculation?
A: The calculation is mathematically precise, but actual engine fluid capacities may vary due to design factors.

Q3: Can this be used for other fluid calculations?
A: Yes, the gallons per cubic inch constant can be applied to any volume conversion between cubic inches and gallons.

Q4: What about metric measurements?
A: For metric, use liters (1 liter = 61.0237 cubic inches) instead of gallons.

Q5: Does this account for engine clearance volumes?
A: No, this calculates total displacement only - actual fluid capacities may differ.