100 octane tuning?

[holshot14]

I m going to run some sunoco 100 octane in my OPE over the winter, was wondering if the carbs need richened or leaned to accomodate the change. I am trying this as a non ethanol alternative.

 

[blsnelling]

Your saws will be rich on race gas if they're tuned for pump gas. I'm curious as to why the switch for the winter? IIRC, the 100 octane Sunoco has ethanol in it. If it's GT, it has 11% alcohol.

 

[holshot14]

Ok, no specific reason, just wanted to try something different!

 

[blsnelling]

That's cool. Just don't forget to richen them back up when you go back to pump gas.

 

[holshot14]

Thanks, in general u think 1/8 turn 1/4 turn or more?