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

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Velocity Tom

05-22-2007 07:27 PM

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

Just wanted to find out.

Beak Boater

05-22-2007 08:19 PM

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.

FeverMike

05-22-2007 09:32 PM

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

Pwrbt33

05-23-2007 06:02 AM

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

John:D

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