What Gasoline Corresponds to Motorcycle Compression Ratio?

1 Answers
AliviaDella
07/30/25 9:34am
Motorcycle engine compression ratio is 9.5:1, here are the relevant details: Compression ratio: The minimum working volume of the cylinder, which is the total volume above the piston when the piston is at top dead center, is called the combustion chamber volume, denoted as Vc; while the maximum volume of the cylinder when the piston is at bottom dead center, which is the total volume above the piston, is called the cylinder total volume, denoted as Va. Gasoline octane rating: The high or low number only indicates the size of the gasoline's octane rating, and different octane ratings should be selected based on the engine's compression ratio. Mid-range cars with a compression ratio between 8.5-9.5 should generally use 93 octane gasoline; cars with a compression ratio greater than 9.5 should use 97 octane gasoline.
Was this review help?
11
0
Share
More Forum Discussions

Is Adding Soundproofing Cotton to a Car Effective?

Adding soundproofing cotton to a car is effective, as it can indeed enhance the vehicle's sound insulation performance. Soundproofing cotton is typically installed in areas such as the engine hood, behind and beneath the rear seats, on the doors, and on the floor. It improves the car's sound insulation and reduces the amount of noise that enters the cabin. The soundproofing cotton on the engine hood serves multiple purposes: it not only blocks noise but also provides insulation during winter, helping the engine warm up quickly after startup. Additionally, it absorbs some of the oil vapors produced during engine operation, protecting the paint on the hood.
18
1
Share

What Causes the Dashboard to Flash When Starting the Car?

There are several reasons why the dashboard may flash when starting the car: 1. Weak battery: A weak battery is a common cause of car starting failure. If the starter does not work during ignition, it is likely due to a weak battery. 2. Gear not in P position: Drivers of automatic transmission cars may forget to shift into P when parking, resulting in the car failing to start. 3. Steering wheel lock: If the steering wheel is not straightened and turned to a certain angle when parking and turning off the engine, the steering wheel will automatically lock. When trying to start the car again, the steering wheel and ignition key may become immovable, preventing the car from starting.
11
0
Share

Which country does NGK spark plug belong to?

NGK spark plugs are from Japan. NGK is the abbreviation of Nippon Gaishi Kaisha, a Japanese company specializing in spark plugs, automotive exhaust filters, oxygen sensors, etc. Spark plugs, commonly known as 'fire mouths,' function by discharging the high-voltage pulse electricity sent through the high-voltage wire, breaking down the air between the two electrodes of the spark plug to generate an electric spark that ignites the air-fuel mixture in the cylinder. The main types of spark plugs include: standard spark plugs, insulator projection spark plugs, electrode spark plugs, seat-type spark plugs, pole-type spark plugs, surface gap spark plugs, etc.
2
0
Share

What are the differences between Audi S4 and Audi A4?

The differences between Audi S4 and Audi A4 lie in their body dimensions: the Audi S4 measures 4749mm in length, 1842mm in width, and 1400mm in height, with a wheelbase of 2831mm; the Audi A4 measures 4750mm in length, 1842mm in width, and 1433mm in height, with a wheelbase of 2828mm. In terms of configuration, the Audi S4 is equipped with the quattro permanent all-wheel drive system, a four-link front suspension, leather seats with 10-way electric adjustment and lumbar support, a three-spoke leather-wrapped sports steering wheel, an automatic climate control system with sunlight sensor, a trip computer with driving information display, and Sideguard head airbags.
5
2
Share

How to Replace a Stolen Driver's License?

Procedure for replacing a stolen driver's license: The motor vehicle driver whose license has been lost should apply for a replacement at the vehicle management office of the issuing authority. When applying, the applicant must fill out an application form and submit the following documents and proofs: 1. The identity proof of the motor vehicle driver; 2. A written statement declaring the loss of the motor vehicle driver's license. If the application complies with the regulations, the vehicle management office should issue a replacement driver's license within one day. After the driver receives the replacement license, the original driver's license becomes invalid and must not be used anymore. Note: Motor vehicle drivers are not allowed to drive if their driver's license is lost, damaged, expired, seized or temporarily suspended by law, or if their penalty points reach 12.
9
3
Share

What type of air should be used to defog windows when it rains?

When windows fog up in the rain, use warm air to defog them. The method is to first turn on the air conditioning, adjust the temperature to the warm air setting, and switch the air conditioning to the defog mode. The warm air produced by the heater will dry the fog inside the car. This way, not only the front windshield but also the side windows will quickly clear up. When defogging, be sure to switch the air conditioning to external circulation to allow fresh air from outside to enter the cabin. Setting the compressor and fan speed to the highest level can speed up defogging. If the side windows are not clearing fast enough, it's best to close the two central vents to direct more airflow to the side vents, which will help disperse the fog more quickly. You can also slightly open the windows to accelerate defogging.
15
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.