Engine Displacement to Horsepower Formula:
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The CC to horsepower conversion is a rule of thumb used to estimate engine power output based on displacement. Cubic centimeters (CC) measure engine volume, while horsepower (HP) measures power output. This conversion provides a rough estimate for various engine types.
The calculator uses the engine displacement to power formula:
Where:
Explanation: The conversion factor varies based on engine design, technology, and efficiency. Modern high-performance engines typically use lower factors (15-17), while older or less efficient engines use higher factors (18-20).
Details: Accurate power estimation is crucial for vehicle performance assessment, engine tuning, comparison shopping, and understanding engine capabilities for various applications.
Tips: Enter engine displacement in cubic centimeters (CC) and select an appropriate conversion factor based on engine type and technology. Higher performance engines use lower conversion factors.
Q1: Why is this only an estimate?
A: Actual horsepower depends on many factors including engine design, compression ratio, fuel system, and efficiency. This provides a rough approximation.
Q2: What conversion factor should I use?
A: Use 15 for high-performance engines, 17.5 for average modern engines, and 20 for older or less efficient engines.
Q3: How accurate is this conversion?
A: Accuracy varies significantly. Modern engines with turbocharging or advanced technology may produce much more power than this estimate suggests.
Q4: Can I use this for all engine types?
A: This works best for gasoline piston engines. Diesel engines, rotary engines, and electric motors require different calculation methods.
Q5: Why do different engines have different power outputs for the same displacement?
A: Factors like turbocharging, valve timing, fuel injection, compression ratio, and engine breathing efficiency significantly affect power output.