e85 vs 110 suggestions please
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Teching In
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e85 vs 110 suggestions please Im getting my build together and im debating on running e85 vs 110 octane. I have heard a lot of good things about e85 lately but have no experience with it. My set up is 408ci in a notch, planning on spraying 200-250 through it. Just curious on what everyones opinions are. Pros and cons between running e85 and 110. Both are readily available in my area. Any input is appreciated.
E85 will make more power if the 110 is not oxygenated, E85 is oxygenated... don't worry about fuel consumption.. works great with spray as well... hot plug and run it fat... go to yellow bullet under the fuel section and there's a 30+ page thread on it, tons of great info..
Thread Starter
Teching In
Joined: Sep 2012
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Thanks for the info guys. And yes 110 is much more expensive than e85. The only thing I truely worry about is the ethanol content, I know alot of people say it varries quite a bit. I've thought about just buying a 55 gal drum but from my understanding ethanol is like a sponge and builds a lot of moisture when sitting. Is this true?
Thanks for the info guys. And yes 110 is much more expensive than e85. The only thing I truely worry about is the ethanol content, I know alot of people say it varries quite a bit. I've thought about just buying a 55 gal drum but from my understanding ethanol is like a sponge and builds a lot of moisture when sitting. Is this true?
Last edited by 98TransAmWs-6; Mar 28, 2014 at 02:12 PM.
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Previously, I used Sunoco 110 octane. I had a pro tuner do the final tune on a dyno. Engine ran pretty good, and I made fast lap times. Partly because of cost, I changed my custom EFI system around to accomodate E85. Again, had it tuned by a pro on a dyno.
Holy cow, what a difference! The car never ran as good on 110 as it does on e85. It feels so much better, especially on a hot day. Water and oil temps are about 15-20* cooler. It's a remarkable improvement, and well worth the effort for me.
Yes, I do use about 25% more fuel on a track week end. Sunoco 110 is about $9.50 a gallon, and E85 is about $2.80 a gallon. I could use 300% more fuel, and still save money.
I also use it on the street in the summer. Again, I burn a litte more fuel, but the cost comes out about the same. And the car runs better and cooler, especially in city traffic.
That was 3 years ago. So far, no detrimental effects on the fuel system.
There is one thing you have to be careful of. The octane rating of e85 is around 108-110, depending on who you listen to. But the 15% gasoline in the mix is the cheapest and nastiest stuff they have left over. If you have too much cylinder pressure, it will get under the first ring land and detonate. That breaks the ring land and pushes it up.
If you're going to be using high boost or high compression, you're a lot safer with a quality racing e85.
Thread Starter
Teching In
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Thanks for the input! And I am aware of the higher fuel consumption but like you said it's still a he'll of a lot cheaper. And burns much cooler. If I'm not mistaken they use the low octane fuel because it is much easier to ignite right? Since e85 burns so cool it would slow the burning and throw off the combustion process, correct me if I'm wrong. But I was not aware of that risk, I was planning to use pump e85 but is there a better way to purchase quality race e85?
