Engine Power Estimation:
HP varies based on engine CC and other factors
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Definition: This calculator provides an estimate of engine horsepower based on engine displacement (cc) and engine type.
Purpose: It helps automotive enthusiasts and mechanics get a rough idea of an engine's power output when only the displacement is known.
The calculator uses different power factors based on engine type:
Note: Actual horsepower can vary significantly based on many factors including compression ratio, forced induction, fuel type, and engine tuning.
Details: While not precise, this estimation helps in comparing engines, planning modifications, or understanding performance potential.
Tips: Enter the engine displacement in cubic centimeters (cc) and select the appropriate engine type for the most accurate estimate.
Q1: Why is this just an estimate?
A: Many factors affect horsepower beyond displacement, including turbocharging, engine design, and fuel system.
Q2: How accurate is this calculator?
A: It provides a rough estimate within ±15% for most stock engines, but modified engines may vary more.
Q3: What's the difference between cc and HP?
A: CC (cubic centimeters) measures engine displacement (size), while HP (horsepower) measures power output.
Q4: Why do racing engines make more HP per cc?
A: Racing engines use higher compression, better airflow, and other optimizations to extract more power.
Q5: How do I convert HP to kW?
A: Multiply HP by 0.7457 to get kilowatts (kW).