How fast does 8hp engine go on a kart?

An 8 hp engine on a kart can reach speeds of 40 to 50 mph, depending on the weight of the kart and driver, the gearing of the kart, and the track conditions. A properly set up kart with an 8 hp engine can accelerate from 0 to 30 mph in about 4 seconds. An 8 hp engine is a good choice for beginners or recreational drivers who do not need extremely high speeds. For more experienced drivers or those looking for maximum speed, a higher horsepower engine would be necessary.