How to Match Motorcycle Compression Ratio with Gasoline Octane Rating?

1 Answers
Daniela
07/28/25 8:27pm
For a compression ratio between 7.5 and 8.0, use 90 octane gasoline; for a compression ratio between 8.0 and 8.5, use 90 to 93 octane gasoline; for a compression ratio between 8.5 and 9.5, use 93 to 95 octane gasoline; for a compression ratio between 9.5 and 10, use 95 to 97 octane gasoline. Related details are as follows: 1. Definition of compression ratio: The compression ratio of a vehicle is the ratio of the maximum volume of the cylinder at bottom dead center to the minimum volume at top dead center during the compression stroke. 2. Definition of gasoline octane rating: The gasoline octane rating is the ratio of the actual gasoline's anti-knock performance to that of standard gasoline. The higher the octane rating, the stronger the anti-knock performance.
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