Armchair Racer
Go Kart Champion
- Location
- Florida
Just watched your videos. Your car is way faster than my APR only IS20 DSG 4Motion SW. You're not worried about the longetivty of your turbo running that much boost?
Just watched your videos. Your car is way faster than my APR only IS20 DSG 4Motion SW. You're not worried about the longetivty of your turbo running that much boost?
As you can see mixing e85 with different fuels to create e30 produces a different octane... it’s math
The numbers you entered for ethanol octane and the calculator itself are incorrect.
E85 market fuel has ethanol content ranging from 51-83%. It has an AKI rating (the number typically seen on US fuel dispensers) of 95-97 AKI, and about 102-104 RON.
Ethanol octane numbers do not add linearly on a volume basis, only on a molar basis. In fact, blending of 96 RON premium with ethanol to arrive at E51 (49% premium/51% ethanol) yields a 97 AKI, while blending very low octane light straight run gasoline LSRG (64 AKI) with ethanol to arrive at E51, STILL yields 95 AKI!
Ethanol increases the octane of low octane petroleum blend stock to a much greater degree than high octane blend stock .
For example:
Straight 100 % ethanol has a 99 AKI and 109 RON. Blending it down to E85 with LSRG or another low octane refinery product, as is commonplace, drops the AKI to 97, and RON down to 104 RON.
E33, in your example, would yield about 94.5 AKI/101 RON product.
The increased ethanol provides a degree of in cylinder cooling above normal E10 gasoline as well.
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Lets hijack someone else’s thread about e85 mix. This one is about my car making lots of boost and power. Got the intercooler on and turbo going on today. I’ll be running apr 100 oct flash with 93/w/m on 28pi taper to 26 psi at 6500rpm with my jb4 stack. Ge ready to see a 120+ trap sportwagen
Yep, also depends on winter/summer blend. Mid state (like 200 miles from me) we have some already mixed badass pumps...
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