Endurance Racing - What Octane?

[Van330ci]

I have been told the engine will run cooler with 100 octave race gas, is this true or a mith?

[lokirx706]

Originally Posted by Van330ci

I have been told the engine will run cooler with 100 octave race gas, is this true or a mith?

I was told by a gentleman that builds aircooled Volkswagens that is does. However it isnt a very significant change, perhaps only a few degrees. They would do it if they were worried they might get stuck in traffic. I am not using this as factual information, simply stating something I was told by a 'mystic' VW owner...

I would assume this would be much less noticeable on a water cooled engines. And probably not even noticeable at all, at the compression ratios most N/A rotaries operate at.