E85 in an N/A

[TUFFTR]

I have a joint 15 minutes away that sell's it. pretty cheap actually.

Anyway I have not seen a discussion thread on this matter for this engine.

I am running a high flow fuel pump + ECU w/dual maps a/flex fuel + AFPR.

What else is needed to be safe to run on E85? Expected power and torque gains? pro's? Con's?

I have a 74' which is 10:1 compression. It's been intriguing me for a while. Most of us run high flow fuel pump's and some sort of basic fuel tuning anyway. Why not use the best fuel to get best power and torque?

I'm not fussed about the extra usage one bit. The extra usage is offset by it's lower initial price, working out to around the same price anyway
98 octane PULP $1.55 P/L
E85 $1.25P/L

Flex fuel sensors?

I just want a thread which has some good info on this for N/A's......I know little about tuning.........the basics really..........and I love to learn........been reading a few of the E85 threads but injector size etc doesn't help me.

Anyway.....discuss....

[green-lantern]

No! God no! Unless you just want to have a hard time finding fuel when you get away from the house because there are very few pumps around. E85 +NA = useless.

[TUFFTR]

No! God no! Unless you just want to have a hard time finding fuel when you get away from the house because there are very few pumps around. E85 +NA = useless.

I literally jump on the freeway for 10-15 mins depending on traffic and I have E85 :P.........

I'm guessing not as common in the USA?

[Intropy]

It's pretty simple. Pump, injectors, and a fuel system and filter that will hold up.

Keep in mind you don't automatically make more power just by switching to E85. In fact, you might make less. You need to adjust your timing to take advantage of the higher octane. That's the pro.

The cons are more frequent fillups and perhaps availability (or lack thereof). Also, the car may be fussy about cold starts and other situations. Your tuning solution may limit what you can do about it.

[IPD]

imho, unless you're building your car on a 13:1 or 14:1 compression, don't bother. you need to be able to shove more air into the cylinder in order to tap the potential of e85. yes, you can run your car on it with minimal changes; but you're not going to get performance benefits out of it--even with fuel control (which is necessary, btw).

i would LOVE to see someone post n/a e85 only numbers for a 6g72. i've heard of c16 being ran in 14:1 motors...so i'm sure with a little timing finesse & adequate fuel system--it's doable.

[GTOX]

I'm sure e85 will start to become more popular here Paul, cars like the new commodores etc are designed to run on it.

Is it a caltex that sells it near you?

[TUFFTR]

I'm sure e85 will start to become more popular here Paul, cars like the new commodores etc are designed to run on it.

Is it a caltex that sells it near you?

Wouldnt touch Caltex with a 10ft pole! Nah there is a United in werribee not far away, easy to get too, and cheap, but the pros and cons for N/A has got me thinking - has anyone done it before on a 6G7X N/A and the benefits and downsides..
It'll have 272's in a matter of weeks now. so should be enough air coming in.

[IPD]

Wouldnt touch Caltex with a 10ft pole! Nah there is a United in werribee not far away, easy to get too, and cheap, but the pros and cons for N/A has got me thinking - has anyone done it before on a 6G7X N/A and the benefits and downsides..
It'll have 272's in a matter of weeks now. so should be enough air coming in.

you're still limited by compression; cams or not. and it's a pretty well established fact that cams don't do much of anything for even moderately BPU'd cars. chris had some pretty convincing experience from trying street-grinds on his car. unless you've got ported heads, you're not going to see much gain. and that was on a vr4. i believe the gain on an n/a will be even more abysmal.

there's only two ways to get more volume of combustables into (and thereby more power out of) a fixed-size cylinder. either pressurize it, or increase the compression. forced induction or increased compression ratio.

[GTOJOE]

May not be helpful.... but something to consider. Flexfuel sensors.

Customer Support Forum • View topic - Dual Maps

[DK77]

To run E85, you would at least need an upgraded fuel pump, stainless steel fuel filter, bigger injectors, and some way to tune the car. The only advantage to running it would be you could run more advanced timing, which would require timing control. The way the ethanol content sensors work in the GM vehicles is they tell the ECU how much ethanol is in the fuel to tell the ECU how much fuel to inject - more fuel per higher percentage of ethanol. If you really wanted to take advantage of E85, you would either need to put forced induction in or get higher compression pistons. I will most likely convert my TT to E85, but that is because it will allow me to run much higher boost and advanced timing with no knock.