do you need to run 93 oct. in 500 carbed mot.

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05-22-2007, 07:27 PM

Velocity Tom

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do you need to run 93 oct. in 500 carbed mot.

Just wanted to find out.

05-22-2007, 08:19 PM

Beak Boater

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Its a wast to run 93, in those motors. You will also get more soot on you transom with 93, than you will with 87. Just more to clean off.

05-22-2007, 09:32 PM

FeverMike

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Runs much better on 87 octane unless you bunp the timing up past 36 degrees.

05-23-2007, 06:02 AM

Pwrbt33

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Yup as stated, 87 or 89. No need to run 93.

John

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