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E85 What you Need To Know!

Discussion in 'The Distillery' started by 04sleeper, Nov 30, 2010.

  1. Fabman302

    Fabman302 Current Project: FRANKENSTANG Established Member

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    Question:
    Since e85 varies from station to station and time of year, what is the impact of this change on a vehicle with high boost and lots of timing? Mine was tuned with an ethanol content of around 79/80% but mostly what I am finding now is much lower than that. Am I risking my motor? What if I buy race e85 that really is 85%? Is that going to run leaner than what my motor was tuned for? Since ethanol is cut with gasoline, will the lower ethanol content/higher gasoline percentage fuels tend to detonate sooner?
    Thanks for any input.
     
    Last edited: Jan 19, 2014
  2. 04sleeper

    04sleeper Runs On "Liquid Gold" Staff Member Super Moderator

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    You really don't see an octane change until you go below E50. Because of the higher stoich point, it may run a little richer, but the timing will still be fine.

    If you do go higher on Ethanol content than what the car is tuned for, you most likely will still be fine, but I would recommend at least verifying the A/F.
     
  3. Fabman302

    Fabman302 Current Project: FRANKENSTANG Established Member

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    Wow...that's incredible.
     
  4. binks

    binks New Member Established Member

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    Are you still using the fc350 lines. How long have they been in use? Are they still as flexible as new? Do you use any upper cylinder lubricants or ethanol treatments like Lucas to prevent moisture? Making the switch this winter, closest station is 40 MI so I plan to fill a 55 gal barrel and use a treatment like stabil or Lucas.
     
  5. Fabman302

    Fabman302 Current Project: FRANKENSTANG Established Member

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    Good question. I keep a drum here in my shop and wonder how long it will be stable......
     
  6. 04sleeper

    04sleeper Runs On "Liquid Gold" Staff Member Super Moderator

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    My 04 Cobra still has the FCC-350 hose that I installed in 2009. Still no issues and still running a 10 micron paper filter. Still flexible like new.

    No lubricants or additives have been used.
     
  7. Cobra_Tim

    Cobra_Tim New Member Established Member

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    I'm slightly confused...

    to run E85, do you need a seperate tank and pumps for the e85 to be able to switch back over to 93 when e85 isnt available? Or do you simply run the tank empty, fill up 93, and flash in the 93 tune via some kind of handheld tuner?

    How easy is it to change tune from e85 to 93? I don't currently own a Termi yet, but I have begun my research and reading as it is the next car I want to get.
     
  8. 70SCJ

    70SCJ (Ret) USMC F/A-18 Driver Established Member

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    Run it down to near empty and switch tunes with fill up of different fuel.
     
  9. Fabman302

    Fabman302 Current Project: FRANKENSTANG Established Member

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    Did e85 just jump a dollar/Gal in price or is it just my area....?
     
  10. Jon01

    Jon01 New Member Established Member

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  11. 04sleeper

    04sleeper Runs On "Liquid Gold" Staff Member Super Moderator

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    I paid $2.99 last night here in Dallas.
     
  12. stangfreak

    stangfreak Well-Known Member Established Member

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    Need some help guys. Not sure if this was brought up. I want to run c85 from vp. Now, how long can you have e85 sit in your ? I was told it's not good to have it sit for a long time. I drive my car on the weekends only. So I don't drive it much. Will this be bad?
     
  13. BurnTire

    BurnTire Member Established Member

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    When I ran E-85 I never filled up at the pump. I always pumped into my fuel jugs and tested the consistency. I would see variations from 79-87%. I had tunes for every 1% of content change. If you tune at 85% and pump in 79% the car will run richer. If you tune for 80% and pump in 85% the car will run leaner. So your best to tune with a true 85% mixture and accept a little more richness if the content is lower. E85 is good stuff. Smells like a mixed drink at the red lights.
     
  14. BurnTire

    BurnTire Member Established Member

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    I was a weekend warrior and never had any problems letting it sit in the tank.
     
  15. Fabman302

    Fabman302 Current Project: FRANKENSTANG Established Member

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    I have the test tube but don't feel like I get accurate results from it.
    I have a Zeitronix gauge in the car and I know which stations have what by now so I go to the one with
    the highest Ethanol rating with a 55 gal drum and a handful of fuel jugs and get 75 gallons at a time.
    Best I've seen around here is 82% about 60 miles away and it goes down to 72% at the one closest to my house. :bash:

    [​IMG]
     
    Last edited: Aug 22, 2015
  16. BurnTire

    BurnTire Member Established Member

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    So does that sensor have a probe in the tank?
     
  17. Fabman302

    Fabman302 Current Project: FRANKENSTANG Established Member

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    There is one in return line so it reads what the injectors actually see.

    [​IMG]
     
    Last edited: Aug 22, 2015
  18. 305oh

    305oh Member Established Member

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    After reading this thread, I'l be going e85 soon!
     
  19. burke985

    burke985 Active Member Established Member

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    this thread has answered alot of my questions thank you for the info , now i dont have to aggravate shaun with all my noobness..lol
     
  20. Fabman302

    Fabman302 Current Project: FRANKENSTANG Established Member

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    Shaun knows whats up....he'll help you out.
     

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