How many cc in 5 brake horsepower?

The relationship between brake horsepower (bhp) and engine displacement in cubic centimeters (cc) isn't direct, as bhp depends on factors like engine efficiency and design. However, a rough estimate suggests that approximately 15-20 cc is needed for each bhp in a typical gasoline engine. Therefore, for 5 bhp, you might expect an engine displacement of around 75 to 100 cc. This is just a general guideline, as actual values can vary significantly depending on the engine's specifications.