e85 users

[pnyklr]

do we have any e85 users with their ls1. I have a 98 Trans am Ls1. Im going to put in a cam right . Comp cam 224/230 600ish lift 114 lsa. I already have ported TB, ls6 intake, pacesetter long tube headers. , off road pipe, hooker exhaust, 3200 vig stall and all the ls1 free mods. I would like to run e85. i just got some 243 heads. im going to give them a mild port job. and mill.

wondering how its going . what injectors to use. im thinking ill need 42lbs. i have hp tuners and i know i can tune it for the e85.

[sman]

For a mild setup like that, I would guess no one here. Why do you want to run e85?

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[dawdaw]

Agreed... unless it's boosted, high compression motor, or something that sees a lot of nitrous I think you're spinning your wheels... The gains would be very very minimal but if your he'll bent on it, the 42s would probably work, may need to bump them up to 4 bar if the duty cycle Gets to high... you'll just need to add roughly 30% to your ve tables. Your stock lines will work fine. Change the fuel filter immediately, it's going to clean your tank and Lines out because it is a solvent. Pump wise get a 400lph carbon walbro... The 255s brush will get ate up by the alcohol.

You will see gains because the fuel is oxygenated but it's a bit of a hassle to see minimal gains... if you planned on putting the hose to it, the stuff loves n2o. Run it fat with a hot plug like a br7efs around .032 gap to start. Plug is read the same for the timing mark, the fueling is read by the last few threads on the plug. It's a great alternative to race gas.. only real downside is inconsistency, but fwiw I tested 10 batches of it last summer and it was dead on all the way to November.

[masterfab]

I run E85 in my regal but its a 5.3l ls engine and im boosted. before I answer or try to answer your questions. whats the reason you want to go to E85. remember this about E85

1. it corrosive
2. it has less energy than gasoline and requires about 18% more fuel on average.
3. you will have to rework your fuel system that can 1 support more fuel flow and 2 handle e85's corrosiveness.
4. remember E85 is supost to be 105 oct. but there are differences depending on how long it has sat or even what time of your and blend

[MP81]

DJ has been running E85 in his '88 Mustang since 2009.

When he initally did Megasquirt on the car to run E85, he was still a stock 170k mile 5.0L with a GT40 intake, Cervinis cold air intake (drawn through hood), an X-pipe and flowmaster 40s. Other than Megasquirt, the only thing he changed was switching to 42 lb/hr injectors.

From all of his research he did beforehand, any system after a certain year in the '80s (I can't remember the exact year) can handle E85 without any modification. His car is easily proof of that. The whole fuel system is stock.

And even with the nearly stock 5.0, there was definitely a noticeable power difference. And after we got the tune dialed in, with the price difference of E85 at the time, you could run cheaper than 87 octane (per mile), with an engine tuned to run on what is effectively 105.

In 2010 we pulled the engine to do a cam swap, along with heads, headers, an H-Pipe and Bullets, and it still runs E85 (still has the 42s as well). God does it smell good.

[pnyklr]

well my thought was e85 is about a $1 cheaper then premium and I have a lot of stations around me that have e85. I want the added power from higher compression. and i know this sounds redic but I dont runs cats so the smell im hoping improves lol (all tho it already has after i tuned my car)

[QuickTop]

Agreed... unless it's boosted, high compression motor, or something that sees a lot of nitrous I think you're spinning your wheels... The gains would be very very minimal.

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[MP81]

well my thought was e85 is about a $1 cheaper then premium and I have a lot of stations around me that have e85. I want the added power from higher compression. and i know this sounds redic but I dont runs cats so the smell im hoping improves lol (all tho it already has after i tuned my car)

It depends on what kind of fuel economy you get, since that will determine the cost per mile.

Let's use some basic numbers here.

Say your car averages 25 on Premium @ $4.00 a gallon. That is $0.16 a mile.

We'll estimate that E85 mileage would be 20% less, making it 20 mpg. It would need to be $3.20 a gallon to be the same $0.16 a mile.

And like I said before, in DJ's nearly stock 5.0, there was a noticeable difference, since it was tuned to have much more advanced timing and what not.

[1bad83ta]

Stoic is 14.7 for gasoline and 9.67 for e85. That would be a 34% increase in fuel usage (roughly) unless you are running wide open all the time. lol. I haven't tuned an e85 car so I am not sure what the a/f would be under load versus gasoline but when you are cruising around the e85 would have to be that much cheaper.

[shawnc16]

There is no cost advantage. It's the octane increase and fuel cooling the charge. Nobody running E85 is using it for better fuel economy, it's strictly performance based.

[shawnc16]

I'm running corn in my turbo iroc IMO, it's not really worth it unless you're forced induction.

[MP81]

There is no cost advantage.

There was, but the price gap between gas and E85 has narrowed in the last couple years.

DJ just runs it for the extra amount of timing he can dial into it. Once again...definitely a noticeable difference, even with his stock engine, between E85 and gas...though come to think of it, he would run 87. So maybe that's why it made such an impact.

[DETROITMUSCLE]

Like other have said its really not worth switching unless you have a forced induction car or really high compression.

[shawnc16]

There was, but the price gap between gas and E85 has narrowed in the last couple years.

DJ just runs it for the extra amount of timing he can dial into it. Once again...definitely a noticeable difference, even with his stock engine, between E85 and gas...though come to think of it, he would run 87. So maybe that's why it made such an impact.

Still minimal price advantage if he was able to tune it for better economy. Its currently about $3.25 a gallon.

[masterfab]

stoich is 1. but the afr dose change. now there are advantages as long as you willing to take on the initial cost. which isn't to bad.

it dose offer cooler intake charge and that dose allow more timing but you can easily give it to much timing and the motor not complain. a good tuner(not me) will see that.

if you building a motor you plan on running on 110 or even premium the cost advantage dose help as it 2.89 a gallon for e85 by me and 110 is 7.25 a gallon. premium is abut 4.05 a gallon. so for me it would pay off.

using e85 in my eyes only has performance advantages.

help us out with some info so we can help you better.

whats you compression ratio?

how often to you plan to drive it?

whats your power levels?