Someone was telling me you can run E85 in high compression motor? Is this correct?

Someone was telling me you can run E85 in high compression motor? Is this correct?

Yes you can. You can run E85 in just about anything that would normally run on gasoline. E85 is 85% ethanol and 15% gasoline and is rated at 105 octane. We've tuned multiple types of cars on this fuel including one of our technician's twin turbo Camaro's, a customer's Subarus WRX STi and a Honda Civic (2.0L @ 385whp :lol: )

The Stoich value for E85 is 9.765:1 vs Gasoline's at 14.7:1. Stoich is the relationship between air and fuel needed for complete combustion. This means fuel consumption is going to be higher with E85 since you have X amount of air (displacement of a cylinder) to utilize so you need to put more fuel in there to use all of the oxygen in the cylinder.

Besides needing to add more fuel via tuning your computer, E85 typically will make best power with more timing than what gasoline by itself requires. We use E85 as it has great cooling characteristics and can provide up to 10% power horsepower compared to using gasoline on the exact same setup.

Let me know if you have any more questions!

Thanks!
David @ DIDRace.Com

Nice info on the E85 David! I am looking at running this in my Vette as I had heard that I will get better performance from it. For now though I am working out some bugs that just popped up, my plug wires weren't performing very well, spark plugs were gapped too much and when I give the motor a rev over 4500 rpms it will just shut off!! So it is off to find out the problem.:thud:

Greg.

E85 isn't that the stuff thats made from corn oil?

E85 isn't that the stuff thats made from corn oil?

Yes, same stuff that Jay Lenos car is running on!

I would run it if it was available out here in the Los Angeles area.
:(

I would run it if it was available out here in the Los Angeles area.
:(

Hey Mike, how have you been doing? If you don't recall I talked to you before the Sema show, George is a friend of mine and he gave me his phone to talk to you that day. Anyways, there are a few stations that have the E85 around the LA region. One that I know of right off the bat is off Bundy South off the 10 Freeway. I know there are a few others also but I have only been to this one! We should meet up sometime and you can see out black Vette! Have a good day!

Greg.

Someone was telling me you can run E85 in high compression motor? Is this correct?

Ive been running 25% ethanol in my Vette for over 2 months now...works great

Using E85 in a Corvette voids GM warranty and will eat existing fuel system parts. This got out of hand by people using E85 forcing GM to publish a TSB

Document ID# 2000881

Subject: Usage of E85 Fuels in GM Vehicles #05-06-04-035C - (07/30/2007)

Models: 1997-2008 GM Passenger Cars and Trucks (including Saturn)

Customer Interest in E85 Fuel

As the retail price of gasoline increases, some locations in the country are seeing price differentials between regular gasoline and E85 where E85 is selling for substantially less than regular grade gasoline. One result of this is that some customers have inquired if they are able to use E85 fuel in non-E85 compatible vehicles.

Important: Only vehicles designated for use with E85 should use E85 blended fuel.

E85 compatibility is designated for vehicles that are certified to run on up to 85% ethanol and 15% gasoline. All other gasoline engines are designed to run on fuel that contains no more than 10% ethanol.

Notice: Use of fuel containing greater than 10% ethanol in non-E85 designated vehicles can cause driveability issues, service engine soon indicators as well as increased fuel system corrosion.

Using E85 Fuels in Non-Compatible Vehicles

General Motors is aware of an increased number of cases where customers have fueled non-FlexFuel designated vehicles with E85. Fueling non-FlexFuel designated vehicles with E85, or with fuels where the concentration of ethanol exceeds the ASTM specification of 10%, will result in one or more of the following conditions:

• Lean Driveability concerns such as hesitations, sags and / or possible stalling.

• SES lights due to OBD codes.

• Fuel Trim codes P0171 and / or P0174.

• Misfire codes (P0300).

• Various O2 sensor codes.

• Disabled traction control or Stability System disabled messages.

• Harsh / Firm transmission shifts.

• Fuel system and / or engine mechanical component degradation.

Notice: Use of fuel containing greater than 10% ethanol in non-E85 designated vehicles can cause driveability issues, service engine soon indicators as well as increased fuel system corrosion.

If the dealer suspects that a non-FlexFuel designated vehicle brought in for service has been fueled with E85, the fuel in the vehicle's tank should be checked for alcohol content with tool J 44175.
If the alcohol content exceeds 10% , the fuel should be drained and the vehicle refilled with gasoline - preferably one of the Top Tier brands.

Repairs to non-FlexFuel vehicles that have been fueled with E85 are not covered under the terms of the New Vehicle Warranty.

A complete list of GM’s FlexFuel vehicles can be found in this Service Bulletin, or at http://www.livegreengoyellow.com.

E85 Compatible Vehicles
The only E85 compatible vehicles produced by General Motors are:

• 2000-2002 S-Series pickups with 2.2L (VIN 5- RPO L43)

• 2002-2005 full-size pickups and utilities with 5.3L (VIN Z -- L59)

• 2006 Chevrolet Avalanche, Silverado, Suburban, Tahoe with 5.3L (VIN Z -- RPO L59)

• 2006-2007 Chevrolet Impala, Monte Carlo with 3.5L (VIN K -- RPO LZE)

• 2007 Chevrolet Avalanche, Suburban, Tahoe with 5.3L (VINs 0, 3 -- RPOs LMG, LC9)

• 2007 Chevrolet Express, GMC Savana with 5.3L (VIN Z-- RPO L59)

• 2008 Chevrolet Impala with 3.9L (VIN 3-- RPO LZG)

• 2006 GMC Sierra, Yukon, Yukon XL with 5.3L (VIN Z -- RPO L59)

• 2007 GMC Yukon, Yukon XL with 5.3L (VINs 0, 3 -- RPOs LMG, LC9)

• 2007 Saturn Relay, Buick Terraza, Chevrolet Uplander, Pontiac Montana SV6 (Canada Only) with 3.9L (VIN W -- RPO LGD)

Notice:

• Only vehicles that are listed in the E85 Compatible Vehicles section of this bulletin and/or http://www.livegreengoyellow.com are E85 compatible.

• All other gasoline and diesel engines are NOT E85 compatible.

• Use of fuel containing greater than 10% ethanol in non-E85 designated vehicles can cause driveability issues, service engine soon indicators as well as increased fuel system corrosion.

• Repairs to non-FlexFuel vehicles that have been fueled with E85 are not covered under the terms of the New Vehicle Warranty.

Veggie fuel is a joke. Even the octane can vary on a pound of gasoline. It can run from 103 to 100 to 97 is if you rate it whatever it will still drop.
Best fuel for the Otto engine is still light sweet crude. Cow poop is the best fuel. Pigshit comes in second. Horse may-new-ear is the worst fuels.
Veggies like caster bean oil will stick the rings in the grooves, burn them to the point of locking them in the grooves is forget all is alternative fuels.

Follow GM's lead is 99Vette showing day way.

Yes you can. You can run E85 in just about anything that would normally run on gasoline. E85 is 85% ethanol and 15% gasoline and is rated at 105 octane. We've tuned multiple types of cars on this fuel including one of our technician's twin turbo Camaro's, a customer's Subarus WRX STi and a Honda Civic (2.0L @ 385whp :lol: )

The Stoich value for E85 is 9.765:1 vs Gasoline's at 14.7:1. Stoich is the relationship between air and fuel needed for complete combustion. This means fuel consumption is going to be higher with E85 since you have X amount of air (displacement of a cylinder) to utilize so you need to put more fuel in there to use all of the oxygen in the cylinder.

Besides needing to add more fuel via tuning your computer, E85 typically will make best power with more timing than what gasoline by itself requires. We use E85 as it has great cooling characteristics and can provide up to 10% power horsepower compared to using gasoline on the exact same setup.

Let me know if you have any more questions!

Thanks!
David @ DIDRace.Com

Good info to know, I would assume that this will become increasinly popular as the years go by here!:thumbsup: