Went racing over the weekend and car was much slower than normal and seemed rich. I went 3-jet sizes leaner in the rear, and two jet sizes leaner in the primary with no change in ET or MPH?
Checked my fuel and it was about 72% Ethanol.
Today I bought some E-98 to add to the fuel. Will this work to help get back around E-85?

I still have not wired the MTX-L wideband O2 sensor, but do I need to re-program the gauge for E-85?

you should be able to mix the 98% and 72% to get 85%.

Don't know your comp ratio, but I would stay away from 72-80%.

Can the mtx-l be set to lambda? The fuel type or percentage isn't required with lambda. .75-.80 lambda will be safe and make good power.

Don

Today I bought some E-98 to add to the fuel. Will this work to help get back around E-85?



^^^It work for me ^^^did you purchase that fuel in a 55 gallon drum? Wondering if it can be purchase in something smaller say 25 gallons .

They had 55-gallon and 5-gallon. I just got the 5-gallons.

well I run e-85. Jet changes don't do much change air bleeds then you will see a change

I have done some tuning on my motor on E85, mostly at a dyno in Klamath Falls OR at 4300 ft. I have since reinstalled the original jets (that fuel teted to be E75 winter mix )but I haven't jetted it up at the track yet on back to back test to see if it wants richer or not I do test the E85 now and find that when the fuel sits in the plastic fuel jugs or metal cans over a period of time the Ethanol content increases, not decreases due to the gasoline evaporating out of the fuel I had 15 gallons sitting in three different containers in the race car trailer since last October, one can and two jugs. They tested in May to be between 87 and 90 % I need to buy some pure Ethanol or at least E98 so I can play with mixing it with the fuel I have to get all of it to a set level of Ethanol instead of having 10 to 15 % differences in batches

Anyone here mix a 5 gallon jug of e-98 with fuel? Wondering how much gas is required to reach e-85?

If you plan to use much E-85, especially blending your own.....a Hydrometer will be required

Monte, what range hydrometer range do you recommmend for E85? I've been testing my pump E85 the the Quick Fuel water tester, I do have gas hydrometer left over from racing NHRA stock back when they checked the specific gravity of all the gas we could run back then. Once they switched to the dialelctric tests all that went away

GOOD E-85 will be in the .793 area at 60*. The problem with regular E-85 is that it is pump swill and as a result is VERY inconsistent. It can be anywhere from E-55 to E-90 and everywhere in between. Unless you buy it by the drum or mix your own, you will never be guaranteed of its consistency. It's junk fuel, just like any other pump gas

I get my VP-101 unleaded from a local Arco station is that junk too...........

I have the quick fuel tester Cab_Burge mentioned, but no Hydrometer.
I plan to switch where I buy the fuel, and maybe just buy 55-gallon drums of Real E-85 race fuel?

When I was running E-85 I tested(same tester as
you have)and the one place I bought from it had
to be summer fuel and it tested at 85-86 and when
it tested good I bought 2 55 gal drums at a time

There is a chart to use your wideband as is set for gas. I just don't know if it is allowed to include the link?

I haven't posted in 7 years so I don't want to get in trouble.

Some other issues with ye ole pump E85 is what they use to denature it. Sometimes they use something called "natural gasoline", and it's the dregs of the gasoline world. When fuel costs are high, you can bet it's the fuel of choice.


You can water test E85 with a graduated beaker, and determine what percentage the ethanol is. Doesn't tell you what's in the "gasoline" side, just how much.

I've gone to VP C85. Works great with nitrous, and makes more NA power than any pump mix I've found. Trouble is, it's a little expensive, like 5+ bucks a gallon, and it's chock full O MTBE, and some other unsavory additives. Up side is, whatever anti corrosion spooge they use really works. Can sit, and sit without turning to white goo.

At the one place I bought from I always went inside
to see the drop sheets for the E-85... all of ours
in the Detroit area was a 2 part drop... ethanol and
the regular gas... it told what it was and the percentage
(number of gals each).. at first(the first couple times
they looked at like I was crazy) until I explained what
I wanted to see.. usually the manager understood... then
I could see the total content of each component.. after a
few times they knew what I was asking for... plus they sorta
got use to me

Hey P body, grab a fiver of C85, and see what you pick up sometime.

Sorry I cant anymore.. sold my engine... now I
use cheapo pump crap in the Rampage

That's not pump gas.

And as far as knowing the percentage drop like MrP said, that still doesn't tell you WHAT they dropped, just how much of it

It`s out of a pump at Arco and comes in drums just like the corn stuff............

On the drop sheet they have to show what was dropped
but it will say 87 octane normally.. not very often
will you see 89

Can I post a link to Y.B.? (or is that not in good taste?)

Yes you can post the link.

I need to do this. . . I've heard some guys picked up a few numbers and some don't notice a change. I'm sure that is very combo and tune dependent.

http://www.yellowbullet.com/forum/showthread.php?t=283787www.

This chart should help out the op. I researched widebands and there was not alot of info on re-calibrating them for e85? (even on the innovate site)

After reading this a few time it made sense that these are the numbers to shoot for.

and like Mark said "stay out of the red"

(those guys can be pretty raw over there sometimes so read at your own demise eh?)

My point was, that doesn't tell you what BLEND they dropped in there. Because fuel blends change seasonally. 87 octane is not the same fuel year round. Most guys I know who bracket race with E-85 check it with a hydrometer religiously, or the car runs all over the place, at least around here

Monte,
Will the Holley Terminator ECU with the added factory style E-85 fuel sensor allow the system to "automatic" adapt to the variation in ethanol content like the flex fuel vehicles do?

I tested every time I bought E-85 from only 1 place... I
used the water tester from QF... the car was always dead
on consistent.... it never varied more than .008 all day
unless there was a BIG change in the weather... I went to
E-85 for 2 main reasons... cheap price and consistency...
it had side effects also... some good(temp) and bad.. it
liked to absorb moisture and corrode things if it sat for
any length of time... that cheap water tester work well..
I even took a sample into work and checked the fuel on our
equipment just so I could verify it
EDIT
when they make E-85 the ethanol always starts at
one point.. NEVER E-100.. its E98... the filler
product is the gas to get it to lite off easier...
so if you check the ethanol content/level it will
vary very little IF its SUMMER grade E-85.... yes
you might see a point or two.. but thats why you test
it.. winter fuel as Monte stated is as low as E-55 and
that shows up in the ethanol water test

The problem is the tanks are seldom empty when they drop in another batch

No. There is no "flex fuel" programming in the ECU..........Well let me edit that. YES, it can be done in the new V-4 software, but you have to buy some other parts from outside sources

this is the reason that I prefer to mix my own.

Test it.. it tells you the ethanol content..the
rest is filler.... its not difficult... it tells
you the ethanol level.. thats ALL your concerned
with.. like I said already.. its gonna be mixed
with 87 octane ... with the test it shows what
ethanol level it is.... PERIOD..if the ethanol
show low dont buy it...the place I buy it from
was ALWAYS 85-86 percent ethanol..but I ONLY bought
in the summer.. they have a date that they call the
change over but how low will that fuel be in there..
so I waited a month at least...I tested this stuff at
work all the time.. it was my job in the fuel lab
EDIT
the only differences in the mix is the 87 octane
that they mix with(filler) is the additives they
add.. in summer its very close... winter its a bit
higher in RVP(Reid Vapor Pressure)... summer is lower

Update.
I added the E-98 to my junk E-70? and got it to about 77% Ethanol.
First time trial was best, Car weight #4,179 lbs, 27x10.5 MT ET Radials, stock suspension with pinion snubber. Bandimere altitude, but I don't have a weather station to know DA, maybe 7,000 ft?

R/T = 0.007
60' = 1.849
330' = 5.003
660' = 7.619
MPH = 94.16
1000' = 9.886
1/4 ET = 11.803
MPH = 118.08

You never stated your running E-70.. the place
your buying from must not sell much.. E-70 is
old fuel(sitting in the tanks for a long time)...
do you check the fuel before you buy... I know of
one guy on here that says all he can buy is E-70
but he changed the calibration for it... doesnt it
say E-85 on the pump