Looking out the window:

87... $3.15/gal
89... $3.25
93... $3.35
Race fuel... 100-116 octane, $5-8/gal

E85 (none local yet but lots around and more all the time)... $2.40, 105 octane

I am seriously thinking of doing an E85 turbocar as soon as we get more local infrastructure. Not rotary though, my RX-7 runs in a series that specifies gasoline or Diesel only. E85 is basically Ethanol denatured with gasoline so you can't drink it. (Could you imagine it? Nobody would pay $20 for a liter of booze when they could get it at the pumps for $.50 )

But I am thinking "different"... E85 for efficiency... run a small engine with standard compression and stoich AFRs, and the turbo is more of a lost energy reclamation device. E85 for the octane requirements necessary for running under boost under pretty much all conditions except idle.

 

ahhaha Those ************* are thinking ahead of the game!!!! bastards

 

C-16 race fuel is $12.00 per gallon here presently.

 

About that here too, i'm not pimp enough to run that stuff.

A friend is currently rebuilding his motor and is going to run E85 once its back together, so we are going to see what it can do. Should be a full bridge with a T04R and about 25 psi or so. Will be AIing meth if needed, since it is currently installed on the car, but probably won't be needed in the dose that he was running for pump.

 

Around here E85 costs as much as regular gasoline does.

 

E85 was $1.98/Gallon in Nashville IL last weekend.

VP C16 was $12/Gallon last summer.

 

For a naturally aspirated car E85 makes no sense. That is unless of course the cost savings makes up for the extra fuel required to go as far. There is also a power penalty. For forced induction use though at least you get a power benefit. Around here with E85 prices right with gasoline prices, it only makes sense for performance reasons when used on in forced inducted engines. You guys that can get it cheap are lucky.

 

We got a all motor honda guy running 10.80's here on E85. Not sure what type of fuel those all motor honda guys run........ but that's boogie'n for these parts !

Shoot, we have corn everywhere around here. The prices of bread/wheat is going up because everyone is backing away from farming wheat and moving to corn because of E85.

We also have a billion dollar E85 plant being built down the road from my house.

 

Let's get this clear. Essentially, E85 = denatured ethanol. It has just enough gasoline in it to make cold starting easier and prevent "recreational" use.

Naturally aspirated engines can and do benefit from alcohol. Now, naturally aspirated *rotaries* may not benefit, or at least may not benefit as much (it may still help with reflected heat coming off of the rotor face), but to say that alcohol doesn't benefit naturally aspirated cars is ignoring a *looong* history of alcohol powered dragsters and roundy-rounders. As well as some moonshine runners

Most racers use methanol and not ethanol, true. But that is mainly because the BATF doesn't care if you buy methanol by the 55 gallon drum, but ethanol is a major hassle.

We have a T/A dragster... 400ish inch SBC or a "big block" (although a Chevy engineer would be scratching his head if he saw it , 60psi and lots and lots and lots of alcohol...

 

You'd generally need to increase the compression ratio for it to have a benefit on a n/a motor.

 

does anyone have a definitive answer on this based on some real experience? im SUPER curious.

 

Hey Crispeed, did you manage to crank the boost any higher? I was told that you loose power on high boost on e85 than on C16?

 

??? nothing happens here!

Crispeed... did you try 35-40psi.
Iam still @ 32psi I hope my new engine will be in the enginebay next month, I will try to turn upp to 40psi just cant decide wich turbo to use!!!


/ Gabi

 

Koenigsegg CCX Biofuel Edition FTW!

 

Swedish Viking power in that Koenigsegg!

 

That **** is as brutal as a viking on angel dust haha. That car seriously make the FD's pretentious and unforgiving ways look like nothing.

 

let me get this straight. E85 is less energy dense than gas so there is less miles on a gallon E85 than gas (assuming the engine efficiency is the same). BUT E85 is higher octane and better charge cooling properties than gas.

So in a turbo rotary, which uses extra gasoline afrs just to help cool and avoid knock, couldn't you use leaner gas afrs with E85 in moderate boost to augment the lower energy density of E85 without detonating?

so basically, a turbo 13b in vac needs 30% more E85 to get same power but the same 13b in boost needs only 20% more E85 to get same power (because you can run leaner without knock).. right or wrong?

anyways the way i see it, with gas prices now, e85 costs a little less but u have to burn a little more so it comes to about same fuel spending but with the race fuel and AI advantages.. so u still come out on top.

this is of course if u take all the E85 precautions like using premix and extra injector.

 

I guess I'm going to have to finally step up to 850 primarys, and 4 1680s. Not to mention anouther 044 pump. CJ

Seriously 30% more fuel is required?

 

I'd rather spend $2.50/Gallon on E85 than $13/Gallon on C16................ and in the end, E85 has the cooling effects alcohol.

 

tuned a friends car and 2x850 + 2x1680 was at 100% at 15psi (479rwhp)
going to tune my car soon and we'll see how far i can go with 8500cc of injectors

here v-power 99 octane is $8.82/gallon E85 $5.04/gallon

 

so 850cc primary injectors can produce a smooth stock sounding idle with E85?

i'm guessing 370-390 whp is safe for 850 primaries and 1600 secondaries on E85.

 

Yo GUS.............

what's your timing look like with the E85 tune/?

 

So what kind of hp would 850 and 1300s be capable of?

 

we ran 17dgr at 15psi but since injectors were running out we didn't fine tune the timing. 30-40 knock with statoil 95 octane but nothing with e85

for your info e85 were +100hp at same psi compared to 95 octane

 

Was the extra power gain from E-85 use only?