E85?
Unfortunately, two rather rude members have taken it upon themselves to disallow any discussion because "ETHANOL SUCKS".
Perhaps start another thread and title it "No Ethanol haters".
For the haters do a search for e85 and hot rodding and learn something. Ethanol from corn has been around a lot longer than gasoline.
Jim
The only premium we have now, is 91 octane, straight gas with no ethanol. If I put in 3 gallons of E85 and then fill up with the 91 octane, If my calculations are correct, I should end up with 93.2 octane and 13.4% ethanol.
Jim
Might as well take it to 15%.
To make it all work correctly you would also want to change stoich in your tune to the correct value for the E15.
The best would be to incorporate a flex fuel sensor into the operating system and just let the system tweak itself for you.
My C5 would benefit from better than our 92 E10 I'm sure. I have to be careful with timing or I'll get KR. But I don't think it's a candidate for E85. Especially since we have only one E85 station. Maybe next year I'll toss some race fuel in and see if it helps power on the dyno. I'm a dyno operator.....
The comment was made that E85 is crap fuel. I'd like to submit that the present pump fuel is crap!
We tuned a Hellcat recently. Got maybe 10hp better than stock. Changed it over to race fuel and we gained 60 hp because we could put some timing in the engine w/o knock.
I run E85 in my turbo 5.3 Nova. Wonderful stuff for that use. I've never seen a hint of detonation and I'm at about 800 rwhp. Low 9's near 150mph.
Ron
Last edited by RonSSNova; Dec 26, 2015 at 02:08 AM.
I used and tuned E85 when it released to the market in 2006'ish...I've run the fuel in a myriad of different cars...cars manufactured in the early 90's even. I never experienced any issues, failures, seal degradation, failures, or anything. The cars that benefited most were forced induction cars. Ethanol drops EGT's, runs way cleaner, can handle more timing which improves boost response, etc.
Regardless of how much energy is produces/consumes, who is responsible (see GM for a large role), what negatives one can say about alcohol's corrosive nature (methanol FAR more corrosive), it works...and works well for the street.
If you can run a flex fuel sensor and dual maps...it's all win.
The only premium we have now, is 91 octane, straight gas with no ethanol. If I put in 3 gallons of E85 and then fill up with the 91 octane, If my calculations are correct, I should end up with 93.2 octane and 13.4% ethanol.
Jim
With that said, blending fuels isn't much fun as you feel like you're always guessing. I would rather run straight E85 if I had the fuel system to support it.
The Best of Corvette for Corvette Enthusiasts
In any case we are comparing two different situations. You have a highly modded car that you race on a track. I am assuming the OP does not, since he didn't give any details. Mine is stock, and I don't race, so I can get no benefit from running E85.
Ethanol does have draw backs, especially in engines that sit for extended periods unused - like my Corvette in the winter. It absorbs water, gums up injectors, and is more corrosive than gasoline. Ask a boat owner if he uses ethanol.
For the guy who has a stock car and wants to keep it running reliably, best case is the ethanol does no significant damage in the long term. It has no up side.
For you guys who run modded race cars, the E85 does have an upside in that it allows you to run higher compression and higher boost, while the possible long term damage is insignificant to you. These are completely different situations.
My gripe with ethanol is that it would not exist in the free market except for the subsidies and mandates it receives. If it could compete with gasoline side by side, on its own merit, then fine. But it can't. In Indiana, I CAN'T buy ethanol free gas.
I'm not the type who buys a car, mods it, uses it up, and then buys another 2 years later. I want to keep mine for a long time. Ethanol makes that harder.
Jim
I have observed that a number of people on the forum change cars frequently. Is it every 2 years? That I don't know. Is it due to using ethanol? Probably not. My point is a lot of people building race cars and use E85 for race fuel likely don't care about the long term. In my case, I like to keep mine for a long time.
You want to run ethanol? Then do so. I don't care. But I resent that thanks to the ethanol lobby I can't run pure gas. For all the griping about oil companies, they have never tried to outlaw ethanol.
Is he building a race car? Then it has benefits.
For a stock car? It doesn't.
i have full exhaust from headers with no cats all the way back, vararam intake and tune.
for the people that don't have any comments about what is required to do this process get lost and start your own thread for the others thanks
Last edited by borlavette; Dec 26, 2015 at 08:50 PM.
i have full exhaust from headers with no cats all the way back, vararam intake and tune.
for the people that don't have any comments about what is required to do this process get lost and start your own thread for the others thanks
I personally think with your mods the effort to switch to e85 won't be worth it vs the power gained
I have observed that a number of people on the forum change cars frequently. Is it every 2 years? That I don't know. Is it due to using ethanol? Probably not. My point is a lot of people building race cars and use E85 for race fuel likely don't care about the long term. In my case, I like to keep mine for a long time.
You want to run ethanol? Then do so. I don't care. But I resent that thanks to the ethanol lobby I can't run pure gas. For all the griping about oil companies, they have never tried to outlaw ethanol.
I also have a 97 corvette that has been getting blended 91 with ethanol since that was introduced to the market and surprise my motor and fuel systems still work like normal. After all we basically have mass produced truck engines in our cars. Not some exotic hand built engines.


















