The engine resource pages provide some background reading/theory about piston engines. We hope it will give our interested public a better insight and critical view when interpreting performance figures published by engine manufactures.

Table of Contents

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Measuring Power & Torque

Defining power and torque
Measuring torque with a dyno
Measurement uncertainties
Testing conditions
Comparing engines

ISA conditions & conversion

International Standard Atmosphere (ISA)
Density Altitude
Engine performance in reality
The effect of a turbo normaliser
Conclusion

Fuel consumption vs HP

Specific Fuel Consumption
Fuel efficiency
Calculating power produced