[Z06] E85 Z's?
Instructor
Joined: Jun 2008
Posts: 171
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From: Acworth Georgia
While I am sure with a retune you can Run E85. I am sure there are a few other things you need to change on it like the fuel lines that are rubber. Do not take my word on this in any way though as I am not running it.
Pro Mechanic
Joined: Oct 1999
Posts: 3,917
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From: South-Central Coast California
While consumers believe E85 is always 85% ethanol, reality is that it's not. Federal regulations mandate 70% to 85% ethanol, however, the Government does not police that and, consequently, quality control is lax. We've seen test data of samples from a few retail sources of E85 in the Midwest that show as low as 64% ethanol. Also, there is no requirement for the octane of the gasoline used to make it, so E85 is typically somewhere between 95 MON and a widely-claimed-but-seldom-achieved 105 MON. The best quality E85s, which are quite rare, when rated by the (R+M)/2 method consumers understand, are 95-97-oct.
That said, you could not run E85 in any Corvette engines without major modification to the car's fuel system and some changes to the engine.
That said, you could not run E85 in any Corvette engines without major modification to the car's fuel system and some changes to the engine.
Last edited by Hib Halverson; Apr 2, 2009 at 10:24 AM. Reason: added content
Moderator
Joined: Jun 2004
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Alcohol will eat or corrode aluminum and rubber so you'd have to change out damn near your entire fuel system. I believe Flex Fuel cars use a specially lined fuel tank and stainless steel fuel lines and assoc hardware.
Instructor
Joined: Nov 2005
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From: Austin Texas
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Drifting
Joined: Jul 2007
Posts: 1,533
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While consumers believe E85 is always 85% ethanol, reality is that it's not. Federal regulations mandate 70% to 85% ethanol, however, the Government does not police that and, consequently, quality control is lax. We've seen test data of samples from a few retail sources of E85 in the Midwest that show as low as 64% ethanol. Also, there is no requirement for the octane of the gasoline used to make it, so E85 is typically somewhere between 95 MON and a widely-claimed-but-seldom-achieved 105 MON. The best quality E85s, which are quite rare, when rated by the (R+M)/2 method consumers understand, are 95-97-oct.
That said, you could not run E85 in any Corvette engines without major modification to the car's fuel system and some changes to the engine.
That said, you could not run E85 in any Corvette engines without major modification to the car's fuel system and some changes to the engine.
100 percent false statement
Thread Starter
Intermediate
Joined: Jan 2007
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From: Afghanistan
Melting Slicks
Joined: Jul 2007
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From: Somewherebetweenhereandthere
Melting Slicks
Joined: Sep 2007
Posts: 3,155
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From: Merced California
Actually there are many people running E85 in boosted cars with no problems. I'm converting my supercharged LS2 GTO to E85 right now. No engine modifications necessary, just larger injectors and fuel pumps. However unless you are going for major power in a boosted engine I would just run gasoline.
