Ethonal blend by january???

http://forums.nasioc.com/forums/showthread.php?t=803341

Already posted on here. But some of you obviously haven't read it.

Here's a snip:

Why is E85 a better fuel ?

Ethanol and is a very turbo friendly fuel for many reasons.

1. It has a much higher evaporative cooling power than gasoline so the intake air charge in the cylinder is significantly cooler that it is with a comparable mixture of gasoline --- that means higher VE.

2. Its octane as blended in E85 is about 100, its blending octane when added to gasoline is rated at 118, so it is a very cost effective octane booster.

3. Ethanol burns faster than gasoline but has a slightly longer ignition delay during the slow burn phase of combustion so the engine does not do as much negative work fighting rising cylinder pressures due to large ignition advances. The total ignition advance for E85 is almost identical to the ideal advance for gasoline so it does not cause the ECU problems when you mix them.

4. At proper mixture you actually are releasing more energy in the cylinder due to the higher quantity of fuel you can burn. ( Ethanol can burn effeciently at much richer mixtures than gasoline can) That means about a 5% increase in energy release all by itself.

5. Peak combustion pressures are actually lower for ethanol than for gasoline but the cylinder pressures stay higher longer, so you have more (longer) crank angle that is usable by the engine. This lower peak cylinder pressure also helps with detonaton control.

6. It will, at proper mixtures lower EGT's by around 200 deg F, but due to the higher quantity of exhaust gas products it produces you do not lose any spool up (in fact I would wager spool up is better).
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I know the link is a LONG read, but it was worth my time. Thank you Lawdawg, for posting it before.

I can't explain my increased MPG, but according to the link (the guy's done EXTENSIVE research) our WHP is actually better. It burns cleaner, etc...

 
Has anyone heard about this "All pump gas in maine will be 20eth/80gas blend by Jan." bullshit??

That blowsssss >
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20% sounds optimisic, and would void a LOT of new car warranties. According to the owner's manual, Subarus will burn up to 10% ethanol blends.

Alcohol is good for power. Ethanol by itself is around 110 octane. Turbos love ethanol for the cylinder charge cooling it gives.

Yes, you do get worse mileage. Lower energy density than MTBE, and lower than "pure" gasoline as well.

 
Okay, so I'm confused. I've been told by many people (including some VERY respected mechanics) that Octane has little to do with gas mileage (ie rating does not, in most cases, affect mpg)

Is this true? If so, what would the Ethanol have to do with mileage differences, higher and lower.

Also, how do you figure it would eat through lines, injectors, etc.? Someone educate me!
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Octane is basically a measure of how hard it is to light the fuel. The harder it is, the higher the number. In non-turbo engines, and low-compression engines, you can get away with lower-octage fuel because the cylinder pressures and temperatures are relatively low. Low enough that the mixture doesn't ignite until the spark plug fires.

On turbo and high-compression engines, things get squeezed harder and hotter, and so a low-octane fuel can ignite all by itself before the spark plug fires. This is called pre-ignition or knock, and it ruins engines -- cracks pistons, breaks rods, beats the hell of out rod bearings. Higher octane fuel solves the problem and allows the engine to run without self-destructing.

Turbo boost and higher compression, of course, makes more power from the same size engine, but you knew that part.

That said, if the ECU has enough ignition advance authority, you CAN get better mileage and power from high-octane gas in a low-compression motor, because it also burns slower, which means you can run more aggressive ignition timing, which gives a longer duration of strong "push" on the piston, which makes more power. Do that with low-octane fuel and the engine tries to spin backwards. That is double-plus ungood.

 
maine winter + alcohol in fuel = aint gonna work...

try flicking a lighter outside at 5 below...or even 20 above...

yeah, it burns cooler, yeah, some more power... but the mileage factor does it for me...plus, what are you gonna fill your tank with in winter? and think about what its going to do to your rubber lines? can you say melty! and then theres the fuel filters... there going to be a lot of those changed out in the next year...

 
I'm sure if it would cause a problem, the scientists at the state house would never allow this stuff into our fuel. :
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I'm starting a bootlegging operation smuggling high-octane hooch from arcoss the boarder. ;D

Who's with me?!

 
what the fudge are police going to do when they can't chase a speeder from NH because they're shitty gas makes their engine knock at anything over 55mph???

 
A little emotional about the subject, Geist?
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I think most people are over-reacting. If you read up on it, you'll realize it's just another "sky is falling" theory.

 
A little emotional about the subject, Geist?
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I think most people are over-reacting. If you read up on it, you'll realize it's just another "sky is falling" theory.
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The only three things I value more than myself are my family, my girl and my car. :
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8)

 
despite any performance problems (hard to argue those with the state) i would have a huge problem with a 20% blend in a fuel system (subarus) only rated for 10%. what happens when that stuff corrodes out a fuel line and makes our cars explode?

 
despite any performance problems (hard to argue those with the state) i would have a huge problem with a 20% blend in a fuel system (subarus) only rated for 10%. what happens when that stuff corrodes out a fuel line and makes our cars explode?
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putting 20% in would void our warranties as well, wouldn't it?

 
In short your "Net" green house gas production is only 15% of what it would be on straight gasoline. That is the equivalent of getting 6.7 times your normal gas milage.


Larry
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Obviously this guy works for the government. I wouldn't believe any guy named Larry. You've all been dooped!














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Now we know why every car in Brazil is an alki-car. 8) When running methonal drinking 5hp WKA restrictor plated karts at 55mph we could get 50 laps on a 1/5th mile track. Is that good?

 
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