E-97 or 100

[BLUEBOY455]

What is best, mix up my own e-85 or just run E-97. And if running E-97 is good what would fuel to air mix be best to start out at. Finely found E-97 so I can have a consistant fuel at the track evey time.

[Drag Chevette]

Originally Posted by BLUEBOY455

What is best, mix up my own e-85 or just run E-97. And if running E-97 is good what would fuel to air mix be best to start out at. Finely found E-97 so I can have a consistant fuel at the track evey time.

IF you can get the E97 I would blend it with 93 octane unleaded and mix it to 85-87%.

dont have time to get into much detail right now, but can tell you that they put that much gasoline in it for a reason.....

If you need a good quality tester, let me know.

[BLUEBOY455]

A tester would be good for me I plan on getting into this a lot deeper in time. Baby steps first, trying to learn as much I can on ethanol and tuninig for it. Got a long way to go though.

[Thumpin455]

Why not run the 97 and just forgo adding gas? If you have cold start problems then you could add some, but if its a race car or blown, why not just run it the way you get it?

[Drag Chevette]

Originally Posted by Thumpin455

Why not run the 97 and just forgo adding gas? If you have cold start problems then you could add some, but if its a race car or blown, why not just run it the way you get it?

E97 is extreemly hard to light and you need a super high powered ignition to get complete burn cycle.

E97 in pure for has a thick viscosity and the flow is hard to stay mixed in a non injected car.

E97 will be more corrosive than E85 as it does not have the gasoline to nuetralize the acid produced by the rejected water.

E85 -E87 can make more power on the dyno than E97

[BLUEBOY455]

That is the kind of info that I am looking for. I am trying to get my stock long block car at full wieght to 11.5x ETs this season. Being able now to mix my ethanol % to what is best should help. Also now I have total tuning capabilitys for ECM, I was hoping you smart guys may give enough hints to help.

[alcohol]

Mark I completely agree with your comments except I wonder about this one;

"E97 will be more corrosive than E85 as it does not have the gasoline to nuetralize the acid produced by the rejected water"

How will gas neutralize acids?
Gasoline also contains some sulfur of which some will end up a sulfuric acid during combustion.
The flip side of my comments is that I have had our lab folks comment that E100 will hydrate much faster in open air than E98 due to the denaturant- It MAY be possible that even more gas COULD slow the hydration more- but that would only be theory on my part.

Your comment may be correct but I cannot connect the dots.

[Drag Chevette]

Originally Posted by alcohol

Mark I completely agree with your comments except I wonder about this one;

"E97 will be more corrosive than E85 as it does not have the gasoline to nuetralize the acid produced by the rejected water"

How will gas neutralize acids?
Gasoline also contains some sulfur of which some will end up a sulfuric acid during combustion.
The flip side of my comments is that I have had our lab folks comment that E100 will hydrate much faster in open air than E98 due to the denaturant- It MAY be possible that even more gas COULD slow the hydration more- but that would only be theory on my part.

Your comment may be correct but I cannot connect the dots.

you would know more than I, but as you stated, I too have found is that E97 will hydrate faster and slightly more than e85 and somehow the water content/rejection the corrosiveness is more visable.
after a brief discussion with another fuel guy we could only come up with the gasoline is a by product of crude, and the oil contents may play a part in the protection of the parts by nuetralizing the mix somehow.

, your the fuel expert. im just a E85 carb builder....lol

[alcohol]

Originally Posted by Drag Chevette

you would know more than I, but as you stated, I too have found is that E97 will hydrate faster and slightly more than e85 and somehow the water content/rejection the corrosiveness is more visable.
after a brief discussion with another fuel guy we could only come up with the gasoline is a by product of crude, and the oil contents may play a part in the protection of the parts by nuetralizing the mix somehow.

, your the fuel expert. im just a E85 carb builder....lol

And a darn good carb builder at that !

IF indeed the higher level of gas slows down hydration as we have theorized, then this would slow/prevent formation of formic and/or acetic acids- thus if this is the acid source then E85 would have a lower rate of acidification in the fuel but- the sulfuric acid formation would be potentially higher.

It could also be that the E98- E100 that folks sometimes get has "missed" the ph balance and corrosion inhibitor steps that large shipment fuel grade E98 always gets due to federal and terminal specifications- that would make the largest difference of all.