FP-HTA86 vs PTE-6765
Jan 7, 2011, 12:31 PM
#46
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Buschur, no understand that I was just using what te comparison was. I built my for power and highway runs. With built vettes and porsches ect. And I wanted something that would rev out and keep making power. Not to much of a autocross guy. And to prove a point in my area that the little 4 banger can make some serious power. Usaully when I'm nailing it it's always long pulls on the highway. My local streets are really small and congested for anything but stop and go.
Jan 7, 2011, 02:53 PM
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Interesting read.I would love to see a comparison between PTE 6262 Vs. FP Black.HTA86 will win the highway run Vs. PTE 6765.It's due to a good power band and holding it down the line.
Jan 7, 2011, 04:05 PM
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Also side note: allot of these cars making this power are running e98 which is 120oct rating. E85 105oct rating. We all know the difference from 87-93oct! Power wise. I'm putting the car back on the Dyno with e98 next!
Jan 7, 2011, 04:35 PM
#58
This thread here-
https://www.evolutionm.net/forums/al...ter-blend.html
https://www.evolutionm.net/forums/al...ter-blend.html
Interesting wiki FWIW:
http://en.wikipedia.org/wiki/Octane_...rement_methods
about 3/4 of the way through
Of course we are also talking about MON (minimum octane number) and not R+M/2 which would be Research Octane number (apparently RON is listed at 129 for pure ethanol, and 116 MON) + MON divided by 2. We are adding 87 octane (we assume) which is 87 R+M/2 so somewhere the math slipped up for what E85 is actually. For it to be accurate it needs to be the R+M/2 of Ethanol calculated with the R+M/2 of 87 octane at 85/15% concentration.
http://en.wikipedia.org/wiki/Octane_...rement_methods
about 3/4 of the way through
Of course we are also talking about MON (minimum octane number) and not R+M/2 which would be Research Octane number (apparently RON is listed at 129 for pure ethanol, and 116 MON) + MON divided by 2. We are adding 87 octane (we assume) which is 87 R+M/2 so somewhere the math slipped up for what E85 is actually. For it to be accurate it needs to be the R+M/2 of Ethanol calculated with the R+M/2 of 87 octane at 85/15% concentration.
For purposes of this post "r+m/2" will be refered to as the pump rating since we only have MON at the pump now and not the pump rating like we do with "pump" gas.
129 RON + 116 MON / 2 = 122.5 Pump rating for pure ethanol alcohol
122.5 r+m/2 @ 85% + 87 r+m/2 @ 15% (or 8.5 gallons to 1.5 gallons) would be 117.17 r+m/2 for E85. Now switching this to E70 (or 7g and 3g) would drop this (using the same values) to 111.85 r+m/2.
This assumes that the RON and MON ratings provided by that Wiki are correct, or the ones given that say 113 are incorrect.
Here is the blending calculator when we get some repeatable numbers:
http://www.ranney.com/mjr/fuel_blend.html
Simply enter 10 gallon tank, beginning octane, race octane, then BS dollar amounts since we arent interested in cost in this discussion so much. and then examine the chart at the mix ratio you are interested in.
129 RON + 116 MON / 2 = 122.5 Pump rating for pure ethanol alcohol
122.5 r+m/2 @ 85% + 87 r+m/2 @ 15% (or 8.5 gallons to 1.5 gallons) would be 117.17 r+m/2 for E85. Now switching this to E70 (or 7g and 3g) would drop this (using the same values) to 111.85 r+m/2.
This assumes that the RON and MON ratings provided by that Wiki are correct, or the ones given that say 113 are incorrect.
Here is the blending calculator when we get some repeatable numbers:
http://www.ranney.com/mjr/fuel_blend.html
Simply enter 10 gallon tank, beginning octane, race octane, then BS dollar amounts since we arent interested in cost in this discussion so much. and then examine the chart at the mix ratio you are interested in.
Jan 7, 2011, 04:36 PM
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Aaron, I talked to these guys and they told me 120?
http://www.e98racing.com/
http://www.e98racing.com/