93 v E30 v. E85

[Junkyard Dog]

Has anybody compared the limits of all three of these with forced induction?

It's no secret that going from 93 to E85 can result in a huge jump. How much of that benefit is realized just from E30?

A tip that worked for me is, I pull up to the pump… and put the car in track mode… it changes to a percentage. So if I’m at say 30% till empty, I calculate 70% of 14.2 … so I need 9.9 gallons and then I use the E85/E30 calculator app.

It is a lot to explain but only takes a few seconds and works excellent

https://www.mustang7g.com/forums/threads/e30-blend-questions.169862/page-2

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[robvas]

"this one paper that got published said..."

"xxx tuner said..."

I haven't seen a video of a boosted coyote where they compare the three, if anyone has one it would be nice to see.

 

[Q6543]

He starts making runs at 11 minute mark

TLDR, car was FASTER on E30 by several tenths, wengerd tuned.
And common idea is if you’re gonna make 1KWHP plus it’s better to go full E85/race fuels.

my own car testing, (SBF foxbody) on E85 I could shove more timing in early in the map than with E30

then I added meth, and E30 with M5 took just as much as E85 with M5, car never went faster either.

this was based off multiple years of track testing, plugs being cut for proper porcelain reads etc.
22lbs of boost in a 331.

93 I would never even try boost, back in the vortech days on 93, you could make 450-500 wheel on 10-12 lbs on 93, but they run them rich AF to help keep cooler, in the 10s gas scale

 

[Junkyard Dog]

then I added meth

No illegal drug use talk on the forum.

 

[Junkyard Dog]

What is M5?

EDIT - Ah, a barrel of meth from VP. Got it. Isn't that just increasing the percentage of alcohol, though?

 

[robvas]

TLDR, car was FASTER on E30 by several tenths

That doesn't even make any sense.

 

[Q6543]

The car must have been able to achieve MBT on a smaller volume of fuel, I’m just going off his dragy info.

the M5 added a trivial amount, I think it made the car 2-3 point fatter from 11.8s to 11.5s gas scale
It also has nitro in the blend to speed up the burn rate, while being much cooler temp wise.

still got a pail in the garage I need to get rid of, maybe dump it in the S650 for shits n giggles, smells like heaven when that nitro burns

 

[Ninjak]

I have heard, though, that E30 mix gets you sludge in the system. Not sure if that is true, but one guy who is now coming along as a Drag Racer in NHRA was talking about it. Says you should not use it; just go full E85

 

[Junkyard Dog]

I have heard, though, that E30 mix gets you sludge in the system. Not sure if that is true, but one guy who is now coming along as a Drag Racer in NHRA was talking about it. Says you should not use it; just go full E85

Weird. I wonder why that would even be?

 

[Q6543]

Only way to get sludge is if you’re using cheap old school rubber fuel lines.
The ethanol deteriorates the rubber and yeah, that can be problematic, that’s why you need stainless or ptfe lines
No issues afaik on 15-up mustangs
But a 67 chevelle, yeah that’s gonna need new lines, had to do my foxes lines also. Not really a modern issue

 

[robvas]

The car must have been able to achieve MBT on a smaller volume of fuel, I’m just going off his dragy info.

Speaking of dragy - it takes a decent amount of power to account for several tenths in a 60-130 run

Not even going to watch the video because it's some pudunk YouTuber and not a shop with a dyno and logs they can look at etc etc

I could see it making the same power but e30 making more just makes no sense. And I'm guessing that guy is doing 700hp or so? I would want to see a higher boost 1000+ hp car as well

 

[robvas]

Only way to get sludge is if you’re using cheap old school rubber fuel lines.
The ethanol deteriorates the rubber and yeah, that can be problematic, that’s why you need stainless or ptfe lines
No issues afaik on 15-up mustangs
But a 67 chevelle, yeah that’s gonna need new lines, had to do my foxes lines also. Not really a modern issue

I'm wondering if the thinking is e85 runs clean but with e30 you have enough dirty pump gas in there where it gets buildup of some sort? (No worse than pure 93 I would imagine?)

But it's one of those "once I heard a guy say" things so

 

[Q6543]

Speaking of dragy - it takes a decent amount of power to account for several tenths in a 60-130 run

Not even going to watch the video because it's some pudunk YouTuber and not a shop with a dyno and logs they can look at etc etc

I could see it making the same power but e30 making more just makes no sense. And I'm guessing that guy is doing 700hp or so? I would want to see a higher boost 1000+ hp car as well

The car was a 3.25 pulley and headers, dynod over 900 wheel, both E30 and E85 tunes were from wengerd.

there was some D/A differential in the slower full E85 run but nothing crazy
E85

E30

 

[Ninjak]

I'm wondering if the thinking is e85 runs clean but with e30 you have enough dirty pump gas in there where it gets buildup of some sort? (No worse than pure 93 I would imagine?)

But it's one of those "once I heard a guy say" things so

It was at the cars n coffee from this past weekend. A young gentleman was talking about his GT500, and the power he was making, but he said it was on 93. Or at least that is what I thought he said. Then his buddy came over, and everyone was gathered around his drag car, and said, no, no, he is on E85. I mentioned, ahh ok. They spoke about it using E85 all the time and how they lived at the pump, and I mentioned: "What about doing E30?" That is when the entire conversation came up, and the NRHA guy started talking about how bad it was to do E30, and that it turns to sludge and whatnot.

He had a whole formula and mixing breakdown of how and why this happens, but honestly, I could not repeat any of it. I guess Robvas and this guy would have a great conversation about it. I do not have enough knowledge to debate whether it's true or not. But I did think, maybe this happens if you have old lines in the car....

 

[robvas]

The car was a 3.25 pulley and headers, dynod over 900 wheel, both E30 and E85 tunes were from wengerd.

there was some D/A differential in the slower full E85 run but nothing crazy
E85

E30

1000 DA difference and what's up with that big spike in the second run that goes over 1g? Weeeeirddd

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