Forced Induction Superchargers | Turbochargers | Intercoolers

Ethanol Content and actual results

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Old Feb 17, 2016 | 11:39 AM
  #21  
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Doh!
Open your eyes Ron.....
Thanks
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Old Feb 17, 2016 | 12:03 PM
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To give you an idea of how much less the demand is vs 85. I run id1300s. On e50 I went 165 at 3280lbs on 50 base and never even broke 80% IDC. May of been 75 even I'd have to look back

I originally started blending to get rid of the black goo... Which it does. The other stuff is just side benefits, especially the lack of consumption


Couple years ago on my old 10:1 motor I forgot to turn on my intercooler pump on for a pass. Full timing in of 21* on e50 it was fine, car slowed down a couple mph but no damage or rattle. Just as well of been no IC
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Old Feb 17, 2016 | 12:32 PM
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the black goo is probably something with your fuel supplier or additive

I've never had any black goo and mine has sat for at least a month at a time on several occasions.
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Old Feb 17, 2016 | 12:50 PM
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Here's a nice calculator to give you an idea of what need to get what you want! https://www.intercepteft.com/calc.html
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Old Feb 17, 2016 | 02:11 PM
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honestly on my turbo cobalt I have never checked the alcohol content from any of the stations I use.
tune stays the same all year round, might get a tad richer with less alcohol. but never see any Kr or any other differences.
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Old Feb 17, 2016 | 02:16 PM
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Originally Posted by black06g85
honestly on my turbo cobalt I have never checked the alcohol content from any of the stations I use.
tune stays the same all year round, might get a tad richer with less alcohol. but never see any Kr or any other differences.
Same here, That's why i find it amusing to see some much attention/emphasis on minor % changes.
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Old Feb 17, 2016 | 03:18 PM
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I talked with our supplier. It's not cold here in Oregon, so they leave it 85% year round.
I don't check it, but other racers do. It measures 87%.

I just hope they keep selling it. With gas so cheap, and not many here using E85, if it goes away I won't be surprised. That would be sad.

I also see ethanol fuel mentioned in the latest round of politics.....I haven't investigated. Something about the ethanol mandate vs Ted Cruz. Dunno.

I know the price here doesn't follow gas.
What's it doing where you guys are?

Ron
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Old Feb 17, 2016 | 03:29 PM
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Originally Posted by RonSSNova
I talked with our supplier. It's not cold here in Oregon, so they leave it 85% year round.
I don't check it, but other racers do. It measures 87%.

I just hope they keep selling it. With gas so cheap, and not many here using E85, if it goes away I won't be surprised. That would be sad.

I also see ethanol fuel mentioned in the latest round of politics.....I haven't investigated. Something about the ethanol mandate vs Ted Cruz. Dunno.

I know the price here doesn't follow gas.
What's it doing where you guys are?

Ron
Well I'm in Houston and work in O&G fuel is in the low $1.20 a gallon range. It's terrible..
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Old Feb 17, 2016 | 07:11 PM
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Usually the same price as 87 or more expensive... Pretty ridiculous.
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Old Feb 18, 2016 | 11:03 AM
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$1.56 in south central PA
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Old Feb 19, 2016 | 12:40 PM
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subbed
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Old Feb 19, 2016 | 12:48 PM
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1.69 a gallon hudson valley ny area. long island has a great station (sunergy) usually test around e90 and is 1.35 a gallon.
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Old Feb 19, 2016 | 07:05 PM
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Here in the Albany NY area the cheapest station I've seen is $1.86 for 87 octane and $1.79 for E85. It was much cheaper when the government was subsidizing it. Used to be about 2/3 the cost of 87.

The mixing idea is very interesting to me also. We have 91 octane pure unleaded now at the Stewarts in the area. I may look into mixing it with E85 as Forcefed86 suggested and see what happens. Worst case hopefully the Holley system will compensate if there is an issue.
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Old Feb 21, 2016 | 10:40 AM
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Sitting under 70% a hair here. (prob right at 70 looks like a did a poor job filling the vial) Usually stays like this year round at the station by my house. De-winterized yeserday and filled up with this. Took 5% out of my E85 tune and I was still rich around 10.6 or so with a commanded 11.0 @ 16lbs. Nothing blew up, so I'm rolling with the lower percentage fuel this year.

Same price as regular unleaded...






Last edited by Forcefed86; Feb 21, 2016 at 03:16 PM.
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Old Feb 21, 2016 | 02:08 PM
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Originally Posted by Forcefed86
Took 5% out of my E85 tune and I was still rich around 10.6 or so with a commanded 11.0 @ 16lbs. Nothing blew up I'm rolling with the lower percentage fuel this year.
Sorry, I am a little confused. Are you saying you are targeting 11.0:1 AFR @ 16psi with E70?
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Old Feb 21, 2016 | 03:15 PM
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Yup... (on gas scale WB)

Last edited by Forcefed86; Feb 22, 2016 at 06:37 AM.
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Old Feb 22, 2016 | 12:14 AM
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Whats wrong with 11:1?
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Old Feb 22, 2016 | 07:36 AM
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Didn't mean to imply there was anything wrong with 11.0:1. I just bought a batch last week here in Orlando and oddly enough got E70 and plan to run E70 permanently. I see a lot folks here claiming good performance with 11.0 - 11.5 and thought 11.0 for E70 seemed a little fat in comparison and wanted to be sure that was what he meant.

Ultimately, the plugs will tell.
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Old Feb 22, 2016 | 07:56 AM
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I've always been in the 10.8-11.2 area on e50
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Old Feb 22, 2016 | 09:00 AM
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Think I target for 11.5 AFR up to a 10-12lbs. Set 10:1 AFR at 30lbs and interpolate between the two so I go slightly richer as the boost rises. Also pulling/adding fuel to individual cyls to get the plugs to read similar. I just shoot for a full turn of color on the base ring. 11.5 and 10.8 look pretty darn similar on an E85 plug. (to me anyway)

I figure if peak rich power on e85 is 10.5 AFR on gas scale (.71 lambda) it’s better to have a little more fuel in the CC at the higher boost levels.
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