The formula that works best only applies to the small newer normally aspirated (carbureted) 4 cycle engines. The ratios change slightly worse with altitude and slightly better with fuel injection and tuning. Most American mowers and the newer 4 cycle outboard motors fit into one of these two formulas: Typical new carbureted engine well tuned: 1 x HP per each 25 cc Fuel injected: 1 x HP per each 22 cc Notes:-Most engines are tuned down to a lower HP for better engine life. -It is common for the same cc engine to be built in 3 different HP versions with the highest rated being the maximized HP per cc version. That is how you see price and HP changes on the same cc engine made by the same company. -Some of the newest (2008 and newer) engines from Japan perform slightly better. A typical 150cc motor should equate to between 3.5 - 6 HP+ depending on tuning with 5 HP being the adv.
The actual formula plots as a curve and not linear but does not apply to Max/High Performance engines like motorcycles.
A convert cc has 350 horsepower
HP does not directly relate to cc
88.74
To convert cubic centimeters (cc) to horsepower (hp), you can use a rough estimate that 1 hp is equivalent to about 15 cc for small engines. Therefore, 75 cc would be approximately 5 hp (75 cc ÷ 15 cc/hp = 5 hp). However, this is a general approximation and actual horsepower can vary based on engine design and efficiency.
9 HP
547c.f. Converted to hp
You need to know the cubic inch not hp to convert to cc.
32cc
To convert cubic centimeters (cc) to horsepower (hp), a rough estimate is that 1 hp is approximately equal to 15 cc for small engines. Therefore, for a 40.9 cc engine, you can estimate that it produces about 2.73 hp (40.9 cc ÷ 15 cc/hp). However, this is a general approximation, and actual horsepower can vary based on engine design and efficiency.
To convert cubic centimeters (cc) to horsepower (HP), you can use the rough estimate that 1 HP is approximately equivalent to 15 cc for gasoline engines. Therefore, 305 cc would be approximately 20.33 HP (305 ÷ 15 = 20.33). Keep in mind that this is a simplified conversion and actual horsepower can vary based on engine design and efficiency.
To convert horsepower (hp) to cubic centimeters (cc), you can use the general rule that 1 hp is approximately equal to 15 cc for small engines. Therefore, 6.5 hp would be roughly equivalent to about 97.5 cc (6.5 hp × 15 cc/hp). Keep in mind that this conversion is an approximation and can vary based on the specific engine design and efficiency.
To convert cubic centimeters (cc) to horsepower (hp), you can use a rough estimate where 1 hp is approximately equivalent to 15 cc in a typical gasoline engine. Therefore, 244 cc would be roughly equal to about 16.3 hp (244 cc ÷ 15 cc/hp). However, this is a general approximation and actual horsepower can vary based on engine design and efficiency.