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Old 04-27-2018, 02:40 AM   #35
demi9od
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Quote:
Originally Posted by llibgrebnek View Post
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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Whoah, had no idea it worked like that. So I've got those E20/E30/E50 pumps not too far from home. If I'd get the same benefit from putting those in my tank as mixing 3gal E85 with 9gal 93 octane, that's awesome.
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Old 04-27-2018, 02:50 AM   #36
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Question

Isn't 101RON about 96.5AKI?

http://www.pencilgeek.org/2009/05/oc...nversions.html
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Old 04-27-2018, 12:00 PM   #37
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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
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Old 04-27-2018, 12:19 PM   #38
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Quote:
Originally Posted by Ironshade View Post
Lets hijack someone elseís 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. Iíll 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
Yes!
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Old 04-29-2018, 11:47 PM   #39
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Everything is on, getting tuned tomorrow for apr 100oct. Car is gunna haul ass
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Old 05-14-2018, 10:05 PM   #40
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Bitch moves. Need exhaust badly. Stock single 2.25 is killing flow but anyway. Check this out.

Log https://drive.google.com/open?id=1sF...DrnrWDzNgcGFSA

Video https://drive.google.com/open?id=1Vw...Ge8opKJd_rFHJL

Last edited by Ironshade; 05-14-2018 at 10:13 PM.
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Old 05-14-2018, 10:27 PM   #41
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Originally Posted by Travis9935 View Post
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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very nice!!
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