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Old 05-12-2014, 01:31 PM   #1
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E85

Hi, does any1 here running e85 ethanol? I'm thinking about running e85 but some1 told me that I have to change my fuel lines, is this true?
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Old 05-12-2014, 01:34 PM   #2
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Originally Posted by saleenfan04 View Post
Hi, does any1 here running e85 ethanol? I'm thinking about running e85 but some1 told me that I have to change my fuel lines, is this true?
E85 can be corrosive to non-stainless and some rubber components. Alcohol attracts and mixes with water.
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Old 05-12-2014, 02:11 PM   #3
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Why does it mater? You'll need to get a new fuel pump and injectors depending on what you have now. Aren't you already close to the limit of your motor?
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Old 05-12-2014, 05:10 PM   #4
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Well this be enough?
http://m.americanmuscle.com/aeromoti...ls-9904gt.html
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Old 05-12-2014, 05:14 PM   #5
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Kinda lol m running 9psi on auto it gives about 380hp and I want to increase to 10psi but dyno shop said its not safe instead of 10psi I should go with e85 which will increase hp and safer but I have no idea what should I do I want at least 420hp in rear wheels but no help
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Old 05-12-2014, 06:16 PM   #6
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Don't do it man you are at the limit of your bottom end...
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Old 05-12-2014, 06:35 PM   #7
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On FI you can gain 60+HP depending on how crazy they get with the timing. It will require new injectors. And a fuel pump. What you listed is just rails nothing more.

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Old 05-12-2014, 06:38 PM   #8
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Yeah hearing from u guys I think I probably won't do thx
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Old 05-12-2014, 06:54 PM   #9
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Im sure you are aware of this, but e85 will require some timing adjustments. The way I understand it, e85 carries it's own oxygen on a molecular level, so it burns entirely different than gasoline. if not timed/tuned correctly, it can burn up your valves.
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Old 05-12-2014, 07:14 PM   #10
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All e85 does is alow you to run more timing than 93. Stop trying to make it sound like rocket science. Its simple. Bigger pump and injectors for FI. And run a lot more timing then you can on 93

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Old 05-12-2014, 08:17 PM   #11
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Lol yeah I was going to get a dyno tune but m just going to stay with 91 for now cuz getting new fuel pump and rails and everything else going to cost lot more For now 91 is good lol
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Old 05-12-2014, 09:49 PM   #12
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All e85 does is alow you to run more timing than 93. Stop trying to make it sound like rocket science. Its simple. Bigger pump and injectors for FI. And run a lot more timing then you can on 93
If thats directed toward me, I apologize for offending anyone. E85 can be a touchy subject for some people. I'm not trying to make anything sound like rocket science. The OP asked if anyone had ever used it so I was just offering my thoughts.

I have a FlexFuel vehicle, and within 50k miles of continual e85 use, it burned up a couple of my valves......and that was in a vehicle that was "optimized" by the factory for such a fuel. I also lost 20% fuel milage while using using it, although thats probably not a concern for anyone who is using it just for its 105 octane rating.

It's not news, but ethanol is not gasoline and doesnt burn like it. From my research, the extra oxygen molecule in ethanol requires a different air/to fuel ratio even when compared to a gasoline that had the same octane rating. So for that reason, the tune should be also adjusted for the use of ethanol as a fuel instead of just the octane rating it has because the air/fuel ratio needs to be compensated for its combustion characteristics.
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Old 05-12-2014, 10:04 PM   #13
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Don't worry about it jefx... Rap is kind of "gruff" sometimes... He's really just a big ol' fat teddy bear...

So the 20% loss in mileage is to be expected I suppose but the lower cost of the fuel more than makes up for it. Does it not?
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Old 05-12-2014, 10:08 PM   #14
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E85

It's ok u don't need to apologize and thx for sharing info
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Old 05-12-2014, 10:45 PM   #15
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cool. thanks.

In my area, e85 usually costs from 10-15% less than gasoline. so if you are getting more than a 10-15% lose in mileage, it actually costs more to run it compared to 87 octane.

Edit to clarify: e85 cost 10-15% less than 87 octane around here

So as a 105 octane fuel I guess its quite affordable.

At the time I was running it, it was 25-30% cheaper than gas (87 octane), so I was saving a little by using it, however, engine damage it not worth the temporary savings in my book. Needless to say, I wont use it again.

Now if your the type of guy who just wants to use it for maximum performance and dont mind the decreased engine component life, then it may be just what you are looking for.
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Old 05-12-2014, 11:34 PM   #16
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Yeah, where I live at they don't have 85 but next town about 10mint from where I live they do sell it's $2.49 a gallon I was thinking I could save some money cuz I use 91 which is $4.69 per gallon. I didn't know I have to change fuel pump, fuel line, etc... I was thinking it was just going to the gas station and putting in e85 and I am good to go but I was way off lol no, I want my engine lol and m taking my car to dyno shop at AED on the Saturday just to get custom tune cuz previous dyno shop didnt do good cuz shift points are incorrect, I still have doubts and once again thx for all the help
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Old 05-13-2014, 12:12 AM   #17
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Sorry e85 per gallon is $3:49 lol
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Old 05-14-2014, 12:40 PM   #18
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It's under $2.70 here I think. 93 is $3.69 I run 93 and have for a year and will never go under 91 octane. Stock motor with FI and e85 not worth burning it up. Built motor would be fine
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Old 05-14-2014, 01:03 PM   #19
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I have supercharged on mine and in California we don't have 93 no more highest is 91
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Old 05-14-2014, 01:53 PM   #20
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When I ran E85 in my old race quad, I learned quite a bit about it.

Ethanol and Gasoline are two completely different fuels. Gasoline runs hotter but creates a bigger bang than ethanol based fuel. Ethanol burns cooler and has a higher resistance to detonation, that is why it is a great "Race" fuel and thus higher octane. However, 20 - 30% more ethanol (depending on the blend) is required to equal the energy density of gasoline.

When tuning the car, E85 is stoich at 9.76, whereas gasoline is stoich at 14.7. So obviously a tune for 93 octane gasoline will not be anywhere close to the same as a tune for E85. Simply adding 30% more fuel to a car running E85 will not be anywhere close to having the car tuned for E85.

The downsides of E85 are that it will absorb water, it will "gum" up if left sitting for a while (in a carb for example, I dealt with this a lot on my race quad), there can be a wide swing in fuel quality (the main reason I am no longer running E85 in anything), it can be mildly corrosive to some rubber and metals if left sitting for long periods of time (3+ weeks), it generally costs more over time to operate a vehicle on than gasoline does. To my knowledge, it does not "Kill" your engine any faster than gasoline will. It will not burn up valves or decrease the life of your engine in any way, at least not when properly tuned.

E85 being the "Race" fuel it is does allow for higher compression, aggressive timing and a more boost for forced induction (turbo or supercharger) than 93 octane or even some unleaded race fuels. This is how you can actually get more power from E85 than 93 octane.


Here is a great chart showing the specs on several different fuels. It shows their gasoline gallon equivelents, energy content in BTUs), flash points, auto ignition temps and other things - http://www.afdc.energy.gov/fuels/fue...ison_chart.pdf


Class dismissed...
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Old 05-14-2014, 02:57 PM   #21
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Tear apart a motor that has been ran on e85 for 20,000 miles and tear apart one on 93 for 20, 000 miles. The e85 motor will look brand new.

E85 is a 105 octane. And the best bang for your buck. Downside. Breaks down oil real quick. Gas mileage goes down. Older fuel systems aren't built for it. Make sure tune is spot on. Also for nitrous guys. A 100 shot on e85 will be for like a 150. And so on

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Old 05-14-2014, 05:53 PM   #22
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informative post, Ish416

There is alot of conflicting info on the web about e85 use in general and its environmental effects, blah, blah, blah.

Of course, there is no official reports of e85 damaging FlexFuel vehicles...but I still wont use it, personally.

My experience has been soured. I had premature valve damage to a completely stock engine after using it, and so did my aunt.....same damage, both on Ford FlexFuel vehicles, and over 400 miles separating us geographically. Maybe it was bad supply... I dont know. but thats more evidence than I need to not use it again.

I have also spoken with a couple random strangers over the years at gas stations who have had similar experiences... I realize that this is all speculative and I cant prove any of it, but its enough for me.

When it was first available in my area, I was a big supporter, and even had an impromptu interview with a local reporter aired on local TV, as well as printed in the local newspaper. I have since changed my tune and believe you should use it at your own risk.
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Old 05-14-2014, 07:35 PM   #23
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Been using it 4awhile no problems. Its a 100 times better than any pump gas

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Old 05-14-2014, 07:45 PM   #24
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Except that there are only 3 stations in NJ for some effing reason... if we had E85 around where I live I'd tune for that **** and run it religiously. It is on the base, but that's only for GOVs, not at the AAFES pumps... bastards...
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Old 05-14-2014, 08:06 PM   #25
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There is only one pump in my area. Then 3 more in San Antonio.

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Old 05-14-2014, 08:08 PM   #26
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Yeah well there is a good scene for racing in NJ, great actually. But not like in some areas of Texas...
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Old 05-14-2014, 08:15 PM   #27
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Yeah well there is a good scene for racing in NJ, great actually. But not like in some areas of Texas...
Hey y'all had the jersey shore though

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Old 05-14-2014, 08:23 PM   #28
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Hey, its still there lol. Most of it is rebuilt although they have this stupid "Stronger than the Storm" theme... not really since the storm ****ed up everything royally but w/e...
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Old 05-14-2014, 08:28 PM   #29
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Hey, its still there lol. Most of it is rebuilt although they have this stupid "Stronger than the Storm" theme... not really since the storm ****ed up everything royally but w/e...
I actually meant the show, thought I mess with you a little on that lmao

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Old 05-14-2014, 09:45 PM   #30
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Lol, those asshats used to film 10 minutes from me. I worked with a guy who went to HS with J-Wow. He described her as "just as stupid as she was then". Lol. I will say I dunno why all the hate for J-Wow and Snooks though. They're stupid, but harmless. I did hope the house would catch fire with the guys in it though...
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