Zach/90\irocZ

iTrader: (6)

any of you guys doing it ?

Benifits More Power, Cheaper, at the expense of less miles per gallon

So it would be nice to run both .

I also know higher Compression would benifit more from e85. so wondering if its worth the extra trouble

alittle on my build is LS1/243s

Pocket

iTrader: (24)

If you're boosting, its cheap hi-octane fuel that has a cooling effect from the nature of alcohol, so you can get away with more compression

NA, it really doesnt have any benefits aside from being cheaper than real gas, but burns faster so the net is a loss

Zach/90\irocZ

iTrader: (6)

yea i know it has a octane of 100 sumthing IIRC

15% additive and the rest is etoh denatured aka ethanal

just curious on stock setups info varies onlinee

Pocket

iTrader: (24)

It varies with the octane of the gasoline that comprises the 15%, but most E85 is around 105 octane

Zach/90\irocZ

iTrader: (6)

thats about right .. seen couple guys run both on same tune ..pcm was tuned not stock of course

30-40 hp difference . which not bad gain i dont know exact specs of engine tho but i believe there unmilled heads .. it was awhile back ago

what intrest me about is not to run it 100% of time but the ability to run and have some gains for a fun weekend at track or around town its nice to have options

gas around here is 4.10 to 4.30 something in some areas
E85 is about 3.60ish per gallon

Pocket

iTrader: (24)

The down side for street use is it contains less energy than regular gasoline, so its cheaper, but you require more of it for the same effect. Most cars drop about 30% mileage, so E85 ends up being MORE expensive than standard gasoline going the same distance

Racers like it because its over 100 octane and if you had to buy 100+ race gas its quite a bit more expensive

Zach/90\irocZ

iTrader: (6)

yea i wouldnt want to run it daily,

NemeSS-TyranT

iTrader: (1)

no reason to run it in a n/a build unless ur at 12:1 + scr
gains wont be worth the hassle in ur build.
i was running 11.5:1 in old motor, made 495rw on pump and picked up about 25rw on e85 but had to go thru tune. e85 is not always available at all pumps here.
i have to travel 12miles to get e85. i have a 55gal drum in my garage that im going to load up for my sc build. but gonna use it mostly for track day or callouts,etc.

Zach/90\irocZ

iTrader: (6)

i agree with you, thats what i wanted to use it for mainly not for daily driving, even tho there are many e85 stations around me.
im not doing the tuning so i wouldnt be my hassle lol
but thinking of getting a hptuner and start learn

which leads me to the question when it comes to the tune for both is it a compromise on the tune to run both im since im sure timing among other things are different , so would you be losing out vs tune only on single fuel source

Base91

iTrader: (1)

Any considerations other than tune etc.? Can running E85, even occasionally, damage the engine in any way? Hoses? Seals etc. ?

Zach/90\irocZ

iTrader: (6)

no your confusing it with methanal i think i spelled wrong lol oh well

you need larger injectors so maybe 42lb to start with and tune

no damage to engine or anything

it actually cleans the engine better than unleaded

Zach/90\irocZ

iTrader: (6)

http://www.hptuners.com/forum/showth...ur-LS1-on-E85&

Pocket

iTrader: (24)

E85 is pretty corrosive to many parts. Depends what you have

Zach/90\irocZ

iTrader: (6)

Ethanol in its self isnt corrosive to the car but it attracts/contains water and water is corrosive hence why it biodegradable in water and that will do the damage
Unleaded Gas is corrosive also which also contains water
in the 80s there where changes in the fuel systems due to that fact so if you have a thirdgen 1985 and down there can be corrosive damage to fuel system and i wouldnt run E85
the 15% additve helps lubricate certain parts so it wont destroy rubber pieces etc
and the process to take water out of ethanol is pretty good

so i wouldnt worry about it as much and compared to regular gas
Im more worried about brake fluid touch paint

five7kid

iTrader: (14)

I used E85 in my primarily-drag-raced (drove it to the track), carbureted 396 for several years. Ethanol takes more heat to evaporate than gasoline, so the engine actually needs to be warmer than with gasoline. This is a benefit when having to hot lap between rounds. Compression was only about 10:1, so that was limiting to the power that could have been had with higher compression and the anti-knock properties of E85 (assuming appropriate camming as well). I know several racers who still use it, but don't know any that are fuel injected. Most high HP dragsters that are injected run alcohol but use methanol.

As noted, with NA, you'd want to raise the compression to improve the power benefits. A lot of turbo guys like it because it isn't as touchy as gasoline.

Zach/90\irocZ

iTrader: (6)

is it easier to tune carbs with e85 ?

five7kid

iTrader: (14)

It's just as easy if you buy a carb that was built for E85.

If you are starting with a gasoline carb, it's a lot harder.

Zach/90\irocZ

iTrader: (6)

Roger that