Something to consider is ethanol characteristics is like 115 equivalent octane. Now or in the future higher octane gas may be created by blending with higher percentage of ethanol. Or this all could all be a simulation...
I "suspect" it does nothing differentE85 vehicle must differentiate. O2 sensors adjust the mix on gas to 15% ethanol gas I would suspect.
Do E85 vehicles have 2 sets of injectors? The system needs to deliver near double the fuel of a just pure has mix.. Vehicles with gas or E10 gas have feedback loops including the O2 sensor to deliver a proper ratio. I get ~5% better mpg on pure gas in my recent autos.I "suspect" it does nothing different
I'm good with that, as long as it's not a suspicion. At first glance it feels like it would be hard to do anything but shoot for a compromise, something not ideal for either component by itselfVehicles with gas or E10 gas have feedback loops including the O2 sensor to deliver a proper ratio.
That would be especially true if you chose to use pure alcohol, which would most likely be methanol, in a racing environment. Motorcycle racers have told me that not only the jets, but the entire supply system has to be up-sized. Years back we asked a drag racer, Jerry Gwynn, about jetting for methanol. He said he increased the size of the jets until the plugs looked wet, then he backed off a step. It is my understanding that reading plugs in an alcohol engine is a whole other ball game.Remember that if you chose an ethanol fuel you would need carburetor jets that flow 2 times more fuel.
Last I was aware, 100LL is a lot of lead for your 650 engine. I’d expect lead deposits with regular use.Would aviation 100LL fuel be ok to run in the early XS’s. Closer to the fuels we used to have in the early 70’s. Higher octane, no ethanol and lead to protect the valves.