100LL in your lawnmower?

[Steve Demeter]

In certain classes.

[steve zemke]

Is that legal now in SCCA?

I have no reason to believe it is illegal. It is just 93 Octane pump gas. Way cheaper than race gas and Avgas.

[steve zemke]

It is just 93 octane pump gas.

[Hardingfv32]

Lower octane fuel burned faster and hotter, making more HP.

1) 'Variations in octane quality are independent of flame speed. There are some high octane gasolines in the marketplace with fast flame speeds and some with slow flame speeds.'

'Octane number is the resistance to detonation.'

Whitfield Oil Company

2) E10 gasoline has a faster burn rate than none Ethanol gasoline. Assuming the same baseline gasoline.

3) Ethanol is an oxygenate. SCCA fuel rule allows 10% oxygenates. Oxygenates can be used to create more power.

Brian

[Steve Demeter]

Certain classes are not allowed to run "oxygenated fuels" of which most formulaa and sports racer are among them. I know that FE and SRF are exceptions.

It is just 93 octane pump gas.

[Steve Demeter]

Certain classes are not allowed to run "oxygenated fuels" of which most formula and sports racer are among them. I know that FE and SRF are exceptions. I might be wrong on this after a quick review of the on line GCR.

It is just 93 octane pump gas.

[Daryl DeArman]

The ethanol has less btu's per gallon and produces less power.

That is true, but, IIRC, since ethanol also makes the mixture leaner, one should be able to mostly compensate by richening the jetting.

Methanol and Nitromethane have less BTU's per gallon, the difference is you can burn soooo much more of it, so if tuned for, makes a whole lot more power.