(724 products available)
The 85cc engine is a beginner-friendly and youth dirt bike engine size. It is used in various vehicles, including motorcycles, scooters, and ATVs. Here are the two main types of 85cc engines:
Two-stroke 85 cc engines:
The two-stroke 85 cc engine is popular due to its high power-to-weight ratio. This means it generates a lot of power with little effort at the expense of moving pistons. As a result, these engines offer more power, faster acceleration, and lighter overall engine weight. Additionally, the two-stroke 85 cc engine is simpler and cheaper to maintain than its counterpart. However, users may experience higher emissions and require more frequent maintenance.
Four-stroke 85cc engines:
The four-stroke 85cc engine is well-known for its fuel efficiency, making it an ideal choice for longer rides and use in heavy vehicles. Since the engine burns less fuel to produce power, it results in lower running costs and emissions. Furthermore, 85cc four-stroke engines provide smoother power delivery and require less maintenance on the valvetrain. They also have more engine torque, making them suitable for heavy vehicles. However, the engines are heavier and require more effort to generate power. Generally, the four-stroke 85cc engine has a complex and costly engine design compared to the two-stroke 85cc engine.
Even though the specifications of the 85cc engines differ depending on the manufacturer, here are some common general specifications that buyers should expect from these engines:
Displacement:
The 85cc engine has a displacement of 85 cubic centimeters. The displacement of an engine refers to the total volume that is displaced by the moving pistons inside the cylinders.
Configuration:
Generally, the 85cc engines have a two-stroke or four-stroke configuration. In most cases, the 85cc engines that are used in dirt bikes and other small applications have a two-stroke configuration. This is because two-stroke engines tend to produce more power in comparison to four-stroke engines of similar size.
Power output:
Most 85cc engines produce about 10 to 15 horsepower. The power output of an engine is influenced by factors such as the engine design, configuration and the tuning.
Torque:
The torque rating of 85cc engines ranges from 7 to 10 ft-lbs. Torque is the rotational force produced by the engine's crankshaft, and it affects the acceleration and the overall performance of the engine.
Fuel type:
Normally, the 85cc engines use unleaded gasoline with an octane rating of not less than 87. Also, some two-stroke 85cc engines use a fuel mixture that contains oil for lubrication.
Cooling system:
The 85cc engines are usually air-cooled or water-cooled. However, air-cooled engines are more common because they are cheaper and simple.
Ignition system:
The 85cc engines mainly use spark plug ignition systems. The spark plug ignites the air-fuel mixture in the combustion chamber, which causes the engine to run.
Start System:
Most 85cc engines have a recoil or electric start system. Electric start systems are more common in four-stroke 85cc engines.
Maintaining an 85cc engine is very important because it ensures optimal performance. The following are some key maintenance tips for the 85cc engine:
Here are some key factors to consider when choosing an 85cc engine:
Power Requirements
Users should consider the power requirements of the intended use. For applications requiring more power, an upgraded version of the 85cc engine may be necessary.
Fuel Efficiency
Consider the fuel efficiency of the 85cc engines. Higher fuel-efficient engines will provide more savings on fuel costs in the long run.
Maintenance
Consider the maintenance requirements of the 85cc engines. Some engines may require more frequent oil changes or spark plug replacements than others.
Cost
Cost is always a consideration when choosing an engine. 85cc engines are available at a variety of price points, so users should select one that fits their budget.
Noise Level
Users should consider the noise level of the 85cc engines. Some engines are quieter than others, which may be an important factor for some users.
Emission
Consider the emission levels of the 85cc engines. Some engines produce lower emissions than others, which may be important for users concerned about environmental impact.
Many 85cc motorcycles have complex engines that make it hard for beginners to work on. However, some have simple engines that people can work on with little or no experience. It is always a good idea to check the service manual to get the step-by-step instructions on how to replace an engine.
Below is a general guide on how to replace an 85cc engine.
Safety precautions:
Maintenance and engine replacement procedures should be done when the engine is cool. Wear protective gear such as gloves, goggles, and masks to prevent injuries and accidents.
Tools Required:
Wrenches, sockets, screwdrivers, and other appropriate tools for engine disassembly and assembly are needed.
New engine:
A compatible replacement engine that meets the specifications of the original engine.
Once the engine has cooled down,
Start by draining the coolant and oil from the old engine. Then, disconnect all the electrical connections, hoses, and cables associated with the old engine.
Use the 85cc engine
once the engine has been cooled down and the old engine oil and coolant have been drained. The electrical connections, cables, and hoses are disconnected. Then, using the appropriate tool, the old engine is removed from the bike.
Prepare the new engine:
Prepare the new engine by installing any necessary components, such as the air intake, exhaust, and cooling system.
Install the new engine:
Carefully place the new engine into the bike and secure it with the appropriate fasteners. Reconnect all electrical connections, hoses, and cables.
Fill the new engine:
Once the new engine has been installed, the new engine should be filled with oil and coolant.
Start the engine:
Check for any leaks or issues after starting the engine and let it run for a while to reach operating temperature.
Q1: How fast does an 85cc engine go?
A1: Generally, 85cc engines have a top speed of 30 to 40 mph. However, the speed also depends on other factors like the type of vehicle and terrain.
Q2: How many horsepower is an 85cc engine?
A2: An 85cc engine has 3 to 4 hp. Normally, manufacturers indicate the horsepower in the product specifications.
Q3: What is the 85cc engine used for?
A3: The 85cc engine is used for small and medium-sized vehicles, such as motorcycles, dirt bikes, and scooters. It is also used in some lawn equipment and generators.
浙公网安备 33010002000092号
浙B2-20120091-4