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What is the equivalent car engine displacement for 400cc?

1 Answers
Stacy
07/29/25 6:20pm
400cc in motorcycles refers to a displacement of 0.4 liters. The term "400CC" indicates the exhaust volume of the motorcycle engine's combustion chamber, where CC is the volume unit for cylinder displacement, with 1CC equivalent to 1ml. If we use the mainstream "L" as the displacement unit in the automotive field, then a 400CC motorcycle is equivalent to a 0.4L displacement car. According to relevant standards in China, different displacements correspond to the following vehicle types: 30CC and below are classified as fuel-powered assist bicycles. 30-50CC are classified as light motorcycles. Above 50CC are classified as regular motorcycles. Among regular motorcycles, they can be further divided into: entry-level motorcycles defined as 250-400CC. Mid-level motorcycles are defined as 500-750CC. Heavy motorcycles (liter-class) are defined as above 1000CC. Motorcycle licenses are categorized into D, E, and F classes. Motorcycles come in two types: two-wheeled and three-wheeled. In addition to directly applying for a beginner's two-wheeled or three-wheeled motorcycle license, one can also apply for an upgrade to a two-wheeled or three-wheeled motorcycle license. Applicants can apply for a motorcycle driver's license at any location nationwide with their ID card, take the test, and upon passing, receive their motorcycle driver's license. For daily maintenance of a motorcycle engine, the following methods can be used: Use lubricating oil of appropriate quality grade. For gasoline engines, choose SD--SF grade gasoline engine oil based on the additional equipment of the intake and exhaust systems and usage conditions; for diesel engines, choose CB--CD grade diesel engine oil based on mechanical load, with the selection standard not lower than the manufacturer's requirements. Regularly change the oil and oil filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, its performance deteriorates, causing various engine problems. To avoid malfunctions, change the oil regularly according to usage conditions and keep the oil level moderate. When oil passes through the fine pores of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter is blocked and oil cannot pass through, it may burst the filter or open the safety valve, allowing oil to bypass through the bypass valve and still carry contaminants back to the lubrication area, accelerating engine wear and increasing internal pollution. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal powder from part wear to form sludge. In small amounts, it suspends in the oil; in large amounts, it precipitates, blocking the filter and oil holes, making engine lubrication difficult and causing wear. Regularly use radiator cleaner to clean the radiator. Removing rust and scale not only ensures the engine operates normally but also extends the overall lifespan of the radiator and engine.
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