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Message: <blockquote data-quote="AD_EG" data-source="post: 3942903" data-attributes="member: 74396"><p>honestly bro i am not very sure...</p><p></p><p>but what i am sure of,</p><p></p><p>compression ratio is not determined by what engine you have necessarily,it also depends on how much your fuel octane level can handle...</p><p></p><p>normally for compression more than 13++ you need a higher level of octane to be safe...when your compression is too high,and the heat and pressure generated in the cylinder can pre-ignite the fuel even before the spark is shot in...which leads to pre-ignition or also known as detonation.</p><p></p><p>you can up your compression as much as possible but many things need to be taken under consideration if you are going for high compression(my definition of high is 13++)....such as cams,your engine breathing,air flow,fuel octane(ron), good tuning for air+fuel mix...</p><p></p><p>and normally for cars which are turbocharged,they have lower compression ratio's to be able to boost higher safely...</p></blockquote><p></p>

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