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Old 05-04-2006, 12:20 AM   #1 (permalink)
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Default Fuel Injected / Carburated : : Octane?

Hello everyone,

Just bought a 1997 Suzuki 600 CXRR, my first bike i figured, go cheap becuase im going to destroy it anyway. Its a Carburated model and i can tell its carburated for a 87 octane gasoline becuase it idles different when i put 93 in it.

I have a friend has a 2003 Suzuki 750 CXR, since its newer, it has a label right on the gas tank " USE ONLY 93 OCTANE GASOLINE " ... I Was wondering whether mine is recommended to use the higher octane rateing and whehter i should take it back to the shop to get the carburater set for the higher octane... Is there any disadvantage to putting higher octane in a lower octane engine or vice versa?

I hear all this about higher compression ratios, higher octane is better for the higher compression to prevent knocking, and i also hear that higher octane dillutes oil on piston walls quicker.

Any advice / recommendations are appreciated...

Thank you

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Old 05-04-2006, 08:20 AM   #2 (permalink)
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Carburetors have nothing to do with octane, only fuel:air ratio. Your bike might call for high octane fuel, but only because it might have a high compression ratio, which is why the '03 needs it. I'd run 87 unless you get knocking. You'll likely get more power and better economy.

Welcome to the forum. What's a CXR?
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Old 05-04-2006, 08:37 AM   #3 (permalink)
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Octane: http://auto.howstuffworks.com/question90.htm
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Last edited by tlwisner; 05-04-2006 at 08:40 AM.
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