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How to run your LS1 on E85

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Old 11-12-2006, 06:53 PM
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You need to tune for E85.
Old 11-12-2006, 09:17 PM
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Originally Posted by black_z
You need to tune for E85.
Well that I figured but as far as the fuel system went and enjectors.
Old 11-13-2006, 06:03 AM
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damn, jersey is one of the only states that doesnt have ANY E85
Old 11-13-2006, 08:39 AM
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Originally Posted by Justin00SS
Well that I figured but as far as the fuel system went and enjectors.
Think of it this way, there will be about a 20% increase in fuel injector and pump usage. Therefore if your Injectors are already at 80% DC, by running pure E85, you will be at 100%. if Your injectors are only say at 50% DC, you will jump up to around 70% or so give or take. You definately dont want to go over 85 0r 90% DC.

It should also be noted that the ethanol will do a super cleansing job on your fuel tank and fuel lines and you should change your fuel filter probably within a week of using this fuel to avoid clogging other parts. Your lines and tank will have a lot of varnish on them from years of using regular gasoline, the ethanol removes all that varnish.
Old 11-13-2006, 08:51 AM
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Originally Posted by LS2Camaro
Think of it this way, there will be about a 20% increase in fuel injector and pump usage. Therefore if your Injectors are already at 80% DC, by running pure E85, you will be at 100%. if Your injectors are only say at 50% DC, you will jump up to around 70% or so give or take. You definately dont want to go over 85 0r 90% DC.

It should also be noted that the ethanol will do a super cleansing job on your fuel tank and fuel lines and you should change your fuel filter probably within a week of using this fuel to avoid clogging other parts. Your lines and tank will have a lot of varnish on them from years of using regular gasoline, the ethanol removes all that varnish.
I would say 30% bigger just to be safe, I´m running #42 right now.

I did test run my car on 100% E85 with stock injectors and had DC well over 100%
Old 11-13-2006, 09:12 AM
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I would definitely change those out then. Of course you know that though
Old 11-13-2006, 05:35 PM
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You would sound like a true genius except for the "runs pretty good" part. JJ

I can't wait to try it out!!!
Old 11-14-2006, 02:50 PM
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Real interesting, if I get another car soon I will most likely convert next year. I would like to see a few others convert before I do mine though.
Old 11-20-2006, 02:14 PM
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What would be the octane benefit of puting 1-2 gal of E-85 in with 12 gal of regular 87 octane unleaded?
Old 11-25-2006, 03:55 AM
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Originally Posted by realmendrivev8s
Real interesting, if I get another car soon I will most likely convert next year. I would like to see a few others convert before I do mine though.
If anything on my car gives up caused by E85 i will post it of course.
Old 11-25-2006, 04:10 PM
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sticky
Old 11-25-2006, 09:53 PM
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I agree, please sticky this...
Old 12-03-2006, 10:36 AM
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Originally Posted by Runn
E85 is perfect for boost, I have many friends here in Sweden with forced induction that use E85... Thanks to the cooling effects and higher octane you can use alot more boost.
Just look at the Saab 9-5 Turbo with Biopower engine (big seller here in Sweden) that when it is fueled with E85 gives 20% more hp and 16% more torque compared with regular gas.
Going to turbocharge my car and test E85 on boost myself.
Old 12-03-2006, 10:49 AM
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Hey Runn, yours will be a unique turbo build, your going to get more than normal power that pump gas will give you running the E85 as of course it is a higher octane rating. Ive been thinking, and I bet you could get away with 9.5.1 even maybe up to 10.1 CR with the Twin 37's. The reason you wont run that CR with pump gas (93) with say 15 psi of boost is because you will get knock the more boost you run which is bad of course, but since your running around 105 octane, you wont get that knock and can safely run that CR with say 15 to 20 psi of boost. Definitely keep us posted on your build I am very interested in this as hopefully by the time I finally get out of this country and go back home, they will have E85 readily available. You will at least want to change the springs in your Heads as the complete stockers are not good for boost. You will also want to get some type of boost pistons, im going with Mahle pistons. Especially running high octane fuel, your stock pistons could be bad news for your stock bottom end. Of course since you were already pushing your fuel injectors going NA, you will definitely need to up those as well along with a good fuel pump. Let me know how it goes.
Old 12-03-2006, 02:27 PM
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Great write up. I haven't seen E-85 in St. louis but it is readily available
in rural Missouri.
Old 12-04-2006, 08:01 AM
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Originally Posted by LS2Camaro
Hey Runn, yours will be a unique turbo build, your going to get more than normal power that pump gas will give you running the E85 as of course it is a higher octane rating. Ive been thinking, and I bet you could get away with 9.5.1 even maybe up to 10.1 CR with the Twin 37's. The reason you wont run that CR with pump gas (93) with say 15 psi of boost is because you will get knock the more boost you run which is bad of course, but since your running around 105 octane, you wont get that knock and can safely run that CR with say 15 to 20 psi of boost. Definitely keep us posted on your build I am very interested in this as hopefully by the time I finally get out of this country and go back home, they will have E85 readily available. You will at least want to change the springs in your Heads as the complete stockers are not good for boost. You will also want to get some type of boost pistons, im going with Mahle pistons. Especially running high octane fuel, your stock pistons could be bad news for your stock bottom end. Of course since you were already pushing your fuel injectors going NA, you will definitely need to up those as well along with a good fuel pump. Let me know how it goes.
Thanks for the input.

Yes E85 is perfect for boost
Old 12-04-2006, 01:47 PM
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Excellent info.

I have been doing alot of research on E-85 also. It is readily available here in Columbia, MO running around 1.50 +/- per gallon.
I have also done some forced induction testing with excellent results!

I will have LS1 Turbo results soon!
Old 12-04-2006, 01:47 PM
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Originally Posted by john shea
Great write up. I haven't seen E-85 in St. louis but it is readily available
in rural Missouri.
There are only 2 or 3 stations in St. Louis area currently.
Old 12-04-2006, 01:56 PM
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Originally Posted by LS1Sportside
Excellent info.

I have been doing alot of research on E-85 also. It is readily available here in Columbia, MO running around 1.50 +/- per gallon.
I have also done some forced induction testing with excellent results!

I will have LS1 Turbo results soon!
Ohh, Looking forward to see your results.
Old 12-25-2006, 07:26 AM
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E85 internal engine pics

enjoy- to dispell some myths

http://www.rune85.com/internal%20engine.htm

posted by rubbersidedown in another thread.


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