e-85 power
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e-85 power

  1. #1
    Senior Member smitt19's Avatar
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    Default e-85 power

    a lot of talk about e-85 fuel these days as it's becoming more available, I know it's rated at 106 octane and then there is a cooling factor, have heard different
    opinions on the compression it can handle, My Question is does it make more power given same circumstance compared to gas ? or is it just cheaper than race gas? then more specifically, in a blower motor where the average comp is 8.5 and you can run 10 lbs with pump gas will the e-85 make more power, or do you have to turn up the boost to make more power?

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  3. #2
    mo balls than $cents$ IMPATIENT 1's Avatar
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    you can get away with slightly more timing, but not near as much as you would alky. ya gotta think of e-85 as 15% unleaded, and remember that 15% will still flash faster than 100% ethanol. i built a blown 475 with 9.4 to 1 compression 2 yrs ago with the intention of runnin it on e85, but the place i was gonna get it went outta biz

    get with unchained(mark), he's having awesome results runnin e85 on his efi turbo deal.

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    Hondo Jet blown540's Avatar
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    I think if you took an engine and just swapped fuels you wouldn't see much of a differance. But if you took the same engine and optimised it for E-85 by bumping up the compression and or boost you would. I don't know first hand though as I have not done the pepsi coke taste test, but Unchained and Sanger Rat have, maybe they'll chime in

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    jabrun jabrun's Avatar
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    I think you have to burn more ethanol than gas to get the same results. Around here it's cheaper but you get worse milage.

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    I also would like some info on E85. I have 14to1 compression now and would like to know can I go up in compression with E85. Im not worried about gas mileage.

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    Senior Member smitt19's Avatar
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    Default web

    I did a little searching today and found a web site "racing on E-85" that has several bracket racers switching over and they are see more power with no other change 14.5 -1 motors normally using 110 switching and picking up 3 in the 1/8
    apparently very consistent times as well, also claiming easier on parts from running cooler I take it. supposedly the government committed to it being readily available for some time we have several stations in sac here that have

  9. #7
    Hondo Jet blown540's Avatar
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    I've heard of people going as far as 16:1 with it. That would certainly improve efficiency and help get back that milage

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    Senior Member TwinTurbo540's Avatar
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    Lots of guys using E85 at www.theturboforums.com

    Travis

  11. #9
    Highaboosta Unchained's Avatar
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    I ran it all last season and was real happy with E85 fuel.
    I burned over 250 gallons of it and the pistons looked good at the end of season teardown too.

    A guy with a dyno told me E 85 made 5% more power than race gas on a turbo EFI motor. No huge advantage there.
    When I re-tuned the EFI it took 27% more fuel for E85. I ran the timing at the same 30 degree max advance as race gas. I will probably increase that to 32 degrees now that I have inspected things.

    I ran 20# of turbo boost to it and I have 8.5:1 static compression. I don't know what final compression that calculates out to be.

    As far as mileage goes at 40 mph I got over 3 mpg. I can handle that.
    Last time I bought E 85 in November it was $ 1.70/gal here in west mi.
    Race gas is at $ 6.00/gal.

    Just the fact that I'm using fuel that was made in Mi. is a huge plus for me.

    Twin Turbo 1800 HP V-Drive lake boat

    http://s621.photobucket.com/albums/t...t=MAH05771.mp4

    Quote Originally Posted by Trigger View Post
    No one cares about your buddies old antiquated garden hose technology.
    Quote Originally Posted by MAXIMUS View Post
    I think I could run more boost but it's a real hand full right now

  12. #10
    Senior Member Jim W's Avatar
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    Has anyone converted carbs over to run E-85?

    Jim
    GN7
    Do you guys ever read anything I post, or just go straight for the throat?


    Got it wet on 6/15/10-------->finally......



    E-85 I'm saving the world--->8 thumps at a time

  13. #11
    Hondo Jet blown540's Avatar
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    Quote Originally Posted by Unchained View Post
    I ran 20# of turbo boost to it and I have 8.5:1 static compression. I don't know what final compression that calculates out to be.
    Gotta love those turbos!
    Final Compression Ratio (FCR) = [ (Boost÷14.7) + 1 ] x CR
    FCR = [ (20÷14.7) + 1 ] x 8.5 = ~20:1 .........Gitter done!

  14. #12
    Hondo Jet blown540's Avatar
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    Quote Originally Posted by Jim W View Post
    Has anyone converted carbs over to run E-85?

    Jim
    Quickfuel did mine and I am very pleased
    I considered converting them myself but after I added it all up, (new metering blocks, floats, needles & seats, new boosters and the tool to press them on) it made way more sense to cough up the little extra $$ and get them setup by someone with experience. If your serious call [email protected] Weather you decide to do it yourself or have it done the conversation will be enlightening.

  15. #13
    No Sandbar To Far sanger rat's Avatar
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    When I started running E85 I was turning the blower 23% over with 8 to 1 compression. Locked out the timing at 32 degrees. Classicmotorsports.com did the work on my Dominators. Lots of good info on E85Forum.com
    Last edited by sanger rat; 11-23-2009 at 05:37 PM.
    Quote Originally Posted by One More Year View Post
    The only blab's I will even be a part of is just when it is me they are talking about. Aaaah yes I can see a few good looking shiny tall deck motors on the beach, with barely enough fuel to get back to the launch saying, "Holy crap how fast you think that Daytona was going man? That's like the 20th time he's gone by today?"

  16. #14
    Senior Member smitt19's Avatar
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    Default travelin

    All seems pretty good only real down side I guess is makin a long river run would have to bring all the gas you would need, be nice having some extra compression to really bump the "that was worth it " factor, I guess just twist up the over drive and with it running cooler, not as big of a deal as it would be with gas. and efi would make it real sweet easy switch thanks for the input

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