11/30/22 12:36 p.m.
So “expert tips” is a Sunoco ad and “bring a funnel”?
C’mon… GRM is better than this.
In reply to Rodan :
Actually for a lot of newbies to using racing fuel instead of pump fuel it is a big help. Yes they mentioned one brand but as we now know there are other brands around.
Plus places we may not know about. Snow mobles for example. They tend to use race fuel because yes they are raced. Motorcycles, race shops gas stations etc.
Then talk to others. There is a serious difference between pump E85 and racing E85. E85 in the pump tends to use as low as 51% ethanol and an even lower octane gasoline. In order to keep prices as low as possible.
Racing E85 uses 15% race fuel and 85% ethanol. That’s what you want if you’re pushing really high boost 20-30 40 PSI not 85 octane gas and 51% ethanol.
Be aware that Indy cars use 100% ethanol and no intercoolers. In fact they used to use 85PSI boost and no intercoolers.
Why not intercoolers? 1 weight ( not just the cooler, but the tube and hoses etc) 2 drag, 200+ MPH adds a lot of drag. 3 restriction of flow through an intercooler air does not like to change direction ( especially at the velocity race engines). ( and it’s simpler)
Remember compressing air heats it up but Alcohol cools it way down.