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The Terminator
Engine/Tuning
e 85
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<blockquote data-quote="Hmbre97" data-source="post: 8419157" data-attributes="member: 31799"><p>e85 is anywhere between 100-105 octane depending on the blend. Winter blend is e70 to help combat cold start issues.</p><p></p><p>With that said, e85 has lots of benefits. It allows you to run more timing which = mo powa. You can do this because of octane rating and because the fuel burns slower/cooler, the combustion temps are lower and detonation is suppressed. It's like having an endless supply of methanol being injected 100% of the time. This is very beneficial to F/I cars. N/A cars would benefit but not as much unless you're running some crazy compression.</p><p></p><p>The downside is it takes approx. 40% more fuel at WOT and 20% at cruising speeds to equal the energy output of 93 pump. This will cause a small drop in mpg but the money saved vs. 93 oct is usually a wash. As fuel gets more expensive though, the cost difference % usually stays the same and at some point, it does become more expensive to run e85 (couple bucks a tank though, not much unless gas shoots to $10/gal). </p><p></p><p>You also need a beefy fuel system. Take your approx. flywheel hp, multiply it by 1.4 and that's what HP level you need to build your fuel system to based on pump gas levels. For example, a car making 600 @ the flywheel would need a fuel system to run a 850hp pump gas motor. </p><p></p><p></p><p>There are a couple of guys on here running e85 and having very good results with it. I'm sure they'll chime in. My experience as of now is running 25% mixed with 93 pump back when I had my stock Mach block w/ 10:1 compression and the Eaton. It helped end my detonation problems in the summer. When I get my new motor back together, I'll be running 100%.</p></blockquote><p></p>
[QUOTE="Hmbre97, post: 8419157, member: 31799"] e85 is anywhere between 100-105 octane depending on the blend. Winter blend is e70 to help combat cold start issues. With that said, e85 has lots of benefits. It allows you to run more timing which = mo powa. You can do this because of octane rating and because the fuel burns slower/cooler, the combustion temps are lower and detonation is suppressed. It's like having an endless supply of methanol being injected 100% of the time. This is very beneficial to F/I cars. N/A cars would benefit but not as much unless you're running some crazy compression. The downside is it takes approx. 40% more fuel at WOT and 20% at cruising speeds to equal the energy output of 93 pump. This will cause a small drop in mpg but the money saved vs. 93 oct is usually a wash. As fuel gets more expensive though, the cost difference % usually stays the same and at some point, it does become more expensive to run e85 (couple bucks a tank though, not much unless gas shoots to $10/gal). You also need a beefy fuel system. Take your approx. flywheel hp, multiply it by 1.4 and that's what HP level you need to build your fuel system to based on pump gas levels. For example, a car making 600 @ the flywheel would need a fuel system to run a 850hp pump gas motor. There are a couple of guys on here running e85 and having very good results with it. I'm sure they'll chime in. My experience as of now is running 25% mixed with 93 pump back when I had my stock Mach block w/ 10:1 compression and the Eaton. It helped end my detonation problems in the summer. When I get my new motor back together, I'll be running 100%. [/QUOTE]
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