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shanepickett
e85 what fuel ratio
#1
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I was just wondering what fuel ratio people were running in there cars on e85 an do you have numbers , as I,am getting my car turn next week on e85 pump fuel. I,am just open to peoples thoughts

Posted on: 2014/6/20 14:01
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Datrotor
Re: e85 what fuel ratio
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Fuel ratio? As in premix ratio?

Posted on: 2014/6/20 14:25
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shanepickett
Re: e85 what fuel ratio
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AFR

Posted on: 2014/6/20 14:37
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ddgonzal
Re: e85 what fuel ratio
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85% ethanol, 15% petrol

Posted on: 2014/6/20 20:52
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bobthebuilder
Re: e85 what fuel ratio
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Good question. You beat me to it.
Also plugs need to be hotter and more timing ???

Posted on: 2014/6/21 0:25
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benny
Re: e85 what fuel ratio
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Just looking over some of my dyno data.
On twin weber carbs we got the AFR between 11.3 to 12.9:1 across the RPM range.

cheers
benny

Posted on: 2014/6/21 0:31
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ddgonzal
Re: e85 what fuel ratio
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The AFR meter will read the gasoline AFR if its read by a wideband sensor.

Actual AFR of 12:1 is extremely lean for E85.

Posted on: 2014/6/21 3:57
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ddgonzal
Re: e85 what fuel ratio
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wideband O2 sensor
A reading of 1.0 lambda is stoich for petrol
A reading of 1.0 lambda is stoich for E85
The output of a gauge or a dyno will be for petrol unless it is switched.

Stoich is 14.7 AFR for petrol but 9.8 for E85
For maximum power is should be much much richer

Posted on: 2014/6/21 4:02
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shanepickett
Re: e85 what fuel ratio
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right boys ,you all seam to be all over the shop . I didn't mention I have a15 turbo motor on boost an i'am running a AFT at the moment at 11.5 an I thought I ask what other boys are running if you can run it leaner.

Posted on: 2014/6/21 6:01
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