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Thread: E85

  1. #1
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    Default E85

    Has anyone converted a vn-vs v8 to e85 ? Just wondering if anyone who has had troubles with tank , steel lines etc with corrosion or any other issues . Looking to change my vr to e85.
    Cheers

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    254RWHP boat anchor EVL253's Avatar
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    while not that model my vb has original steel tank copper feed & anodized alloy return pipes & normal rubber hoses.no issues.
    e85 aint as corrosive as made out to be until you get water in it. thats when nasty shit happens.
    in a year & a half with a carb ive found once a tiny bit of gunk in one of the idle jets. a carb has open to atmosphere vents efi doesnt.

    unless you got some decent comp wont see much change.
    11 second E85 bottle fed boat anchor

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    It's running 11.5:1 and am having a few some detonation issues , can't seem to get much more than 24 degrees into it before it pings at wot , the 24 degrees is in at 4500 . Giving me the shits . It's running bp ultimate 98 , cooler plugs with alloy heads.
    Was also pinging at 2800 part throttle and had to drop ignition timing from 20degrees to 14 to get rid of it .

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    Last edited by jezza355; 24-12-2016 at 07:21 PM.

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    Senior Member Deuce.'s Avatar
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    Subscribed! !
    Keen to see what comes of this. I might end up in the same boat in years to come.

  5. #5
    in the shed buildin shit 3554me's Avatar
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    I've been on e85 for over a year and I have raw and ano lines , foam in
    the tank and have only seen a small amount of corrosion on new threads
    cut into the metering blocks ( white powder type just rubs off)which is
    from the water in the fuel as it's very humid up here .
    How big is the cam ??
    10.44@128.90 on e85

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    Quote Originally Posted by 3554me View Post
    I've been on e85 for over a year and I have raw and ano lines , foam in
    the tank and have only seen a small amount of corrosion on new threads
    cut into the metering blocks ( white powder type just rubs off)which is
    from the water in the fuel as it's very humid up here .
    How big is the cam ??
    Cam is hydraulic roller 242/252 @50 on 108 centre . It made 380hp at the wheels but was limited to the 24 degrees timing . Afr,s at wot were 12.5 and engine temp stays around 92-94c under load . Sorta got me stumped a to why it likes to ping so much . Cranking pressures are 180psi each cylinder .

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    254RWHP boat anchor EVL253's Avatar
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    3554me thats where my gunk come from to as i moved idle jets down low.
    11.5 comp itll be a walk in the park. get some 6 maybe 7 grade plugs. e85 is a lot more tolerant. last time at the strip i leaned out the fuel on the 175hp n20 shot to backfire through the traps. no damage done. on petrol it wouldve melted a piston or valve. a change of fuel jet 5 thou bigger got me 4mph & .5 off et to give you an idea how far off i was on the tune.
    id recommend occasionally putting some ultimate in it for a bit to clean out any e85 goo that builds up
    11 second E85 bottle fed boat anchor

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    Subscribed.
    I too having pinging issues, my cranking pressure is 210-215psi on each cylinder. I found if I run an octane booster it doesn't ping but have been wondering about going down the e85 path.

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    Quote Originally Posted by Ponza View Post
    Subscribed.
    I too having pinging issues, my cranking pressure is 210-215psi on each cylinder. I found if I run an octane booster it doesn't ping but have been wondering about going down the e85 path.
    What ignition setup are you running mate ?
    Quote Originally Posted by EVL253 View Post
    3554me thats where my gunk come from to as i moved idle jets down low.
    11.5 comp itll be a walk in the park. get some 6 maybe 7 grade plugs. e85 is a lot more tolerant. last time at the strip i leaned out the fuel on the 175hp n20 shot to backfire through the traps. no damage done. on petrol it wouldve melted a piston or valve. a change of fuel jet 5 thou bigger got me 4mph & .5 off et to give you an idea how far off i was on the tune.
    id recommend occasionally putting some ultimate in it for a bit to clean out any e85 goo that builds up

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  10. #10
    in the shed buildin shit 3554me's Avatar
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    Jezza are you running really lean in that thing ,is it inj or carb ?
    10.44@128.90 on e85

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    Injected mate , afr is 12.5 at wide open from start to finish no lean spots . Tried all the way down to 12 flat and Still had some knock at 25 degrees . On the dyno couldn't hear the knock from noise etc , no knock box or sensor so wasn't until on the street I could hear it under full load . Dropping timing back to 24 pretty much stopped it

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    I did have an injector stuck open for a bit while initially first tuning it , replaced that under warranty and sorted that . I'm wondering if I may have some excess carbon in that cylinder possibly causing some detonation.

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  13. #13
    Do you ever leave? EH179's Avatar
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    Quote Originally Posted by Ponza View Post
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    I too having pinging issues, my cranking pressure is 210-215psi on each cylinder. I found if I run an octane booster it doesn't ping but have been wondering about going down the e85 path.
    Running 98 pulp?
    If yes, I'm not surprised it's pinging with 210psi...
    E85 will be a good fix.

  14. #14
    in the shed buildin shit 3554me's Avatar
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    Quote Originally Posted by jezza355 View Post
    I did have an injector stuck open for a bit while initially first tuning it , replaced that under warranty and sorted that . I'm wondering if I may have some excess carbon in that cylinder possibly causing some detonation.

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    Quite possibly could have carbon build up or a intake leak or inj gasket rubber leak
    (just guesses here)it's best to check everything........twice !
    10.44@128.90 on e85

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    in the shed buildin shit 3554me's Avatar
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    Quote Originally Posted by Ponza View Post
    Subscribed.
    I too having pinging issues, my cranking pressure is 210-215psi on each cylinder. I found if I run an octane booster it doesn't ping but have been wondering about going down the e85 path.
    I remember reading that octane booster can leave a residue in the chamber that
    can affect the e85 combustion process...don't quote me but worth looking into
    10.44@128.90 on e85

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