PlatinumZealot wrote: ↑15 Jul 2020, 00:04
The fuels they use now are the same species as pump gas.. Except if the pump fuel is Susan Boyle the F1 designer fuel is Adrianna Lima.
Only the best molecules are hand picked basically. So combustion is way more efficient and quicker.
Absolutely.
Even in amateur classes here in the States that use octanes comparable to pump fuel, they have special blends that look nothing like them.
Take a look at something like Sunoco Racing Fuels FR. To quote the advert:
Sunoco® FR™ is an unleaded oxygenated race fuel that performs well in turbocharged engines as well as air-restricted naturally aspirated engines that can benefit from an oxygenated racing fuel. It complies with certain race fuel regulations limiting oxygen to 4 volume percent.
Check the technical details here:
https://www.sunocoracefuels.com/fuel/fr
I don't have pump gas data in front of me, but the SG would be less than street gas, have stabilizers removed, and higher quality hydrocarbons that would allow it to atomize faster and burn quicker. The batch consistency is much better than street fuel ever would be, which is blended regionally and dependent on the season. I have heard numbers of refineries changing the blend 7x in a given year for a specific region in the US.
Click around the Sunoco Racing Fuels site and take a look at the different fuels.
https://www.sunocoracefuels.com/fuels/c ... els?fid=29
We typically use "Supreme" in our road race engines.
VP Racing Fuels is another one. In SCCA Club Racing, until they did fuel testing about a decade ago, racers were using very expensive oxygenated fuels (worth about 2-5%). Several drivers got ill, especially in spec class where they run nose to tail, in addition to the arms race ($20+ a gallon), hence the fuel rules / testing. Check out a fuel like VP C25, typically used in NA drag engines up to 17:1 compression (2 valve, V8, think NHRA Pro Stock) and Pro Mod Nitrous engines:
https://vpracingfuels.com/product/c25/?c=219
Here is an FIA legal 102 octane fuel:
https://vpracingfuels.com/product/rx102/?c=219
Here is the VP Fuel (product) table:
https://vpracingfuels.com/master-fuel-t ... uel-tables