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SVTPerformance's Chain of Restaurants
The Distillery
E85 vs c16
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<blockquote data-quote="Turbo98" data-source="post: 11006817" data-attributes="member: 39787"><p>With me anyway, when I refer to detonation, I’m referring to any pre-ignition of any kind. Be it caused by hot spots or “spark knock” or whatever. Many, many people have proven that E85 is very resistant to detonation when running “normal” a/f ratios (I’ll explain this further down). One reason might be that the auto-ignition temperature of gasoline is 495*F. The auto-ignition temperature of E85 is 630*F. Many people are running it in one valve, two valve, three valve, and four valve engines of all types—pushrods, SOHCs, DOHCs or whatever. In fact, the way I look at it is that the more inefficient and engine is, the more you will benefit from running E85. You can try to research and calculate all the best octane ratings to justify running it or not running it. But like mentioned earlier, it really doesn’t matter. </p><p></p><p>In my personal car, we ran the ignition timing up to 30* advanced under high boost with no detonation. This is unheard of with gasoline. The car did lose power because we were past MBT at that point. This was with the a/f in the upper 11’s. Also, it is possible to detonate E85 if you run it too rich. The Evo guys experience this and I don’t fully understand that phenomenon yet. So the bottom line is that if you run you’re a/f ratio at 11.5-12.0, E85 highly resists detonation. I’m sure there are isolated cases where somebody has detonated it but it’s very rare. There are WAY too many advantages for me not to run it. Some of them are:</p><ul> <li data-xf-list-type="ul">Makes more overall power than race fuel</li> <li data-xf-list-type="ul">Costs 1/3 the price of race fuel</li> <li data-xf-list-type="ul">Runs 20* cooler than gasoline of all types</li> <li data-xf-list-type="ul">Spools turbos and blowers faster</li> <li data-xf-list-type="ul">Keeps your engine steam cleaned</li> <li data-xf-list-type="ul">Keeps your fuel system squeaky clean</li> <li data-xf-list-type="ul">Less stress on engine components</li> </ul><p>The conclusion is if you want to safely make more power, run it! If not, don’t run it.</p></blockquote><p></p>
[QUOTE="Turbo98, post: 11006817, member: 39787"] With me anyway, when I refer to detonation, I’m referring to any pre-ignition of any kind. Be it caused by hot spots or “spark knock” or whatever. Many, many people have proven that E85 is very resistant to detonation when running “normal” a/f ratios (I’ll explain this further down). One reason might be that the auto-ignition temperature of gasoline is 495*F. The auto-ignition temperature of E85 is 630*F. Many people are running it in one valve, two valve, three valve, and four valve engines of all types—pushrods, SOHCs, DOHCs or whatever. In fact, the way I look at it is that the more inefficient and engine is, the more you will benefit from running E85. You can try to research and calculate all the best octane ratings to justify running it or not running it. But like mentioned earlier, it really doesn’t matter. In my personal car, we ran the ignition timing up to 30* advanced under high boost with no detonation. This is unheard of with gasoline. The car did lose power because we were past MBT at that point. This was with the a/f in the upper 11’s. Also, it is possible to detonate E85 if you run it too rich. The Evo guys experience this and I don’t fully understand that phenomenon yet. So the bottom line is that if you run you’re a/f ratio at 11.5-12.0, E85 highly resists detonation. I’m sure there are isolated cases where somebody has detonated it but it’s very rare. There are WAY too many advantages for me not to run it. Some of them are: [LIST] [*]Makes more overall power than race fuel [*]Costs 1/3 the price of race fuel [*]Runs 20* cooler than gasoline of all types [*]Spools turbos and blowers faster [*]Keeps your engine steam cleaned [*]Keeps your fuel system squeaky clean [*]Less stress on engine components [/LIST] The conclusion is if you want to safely make more power, run it! If not, don’t run it. [/QUOTE]
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E85 vs c16
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