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SVTPerformance's Chain of Restaurants
The Distillery
E98?
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<blockquote data-quote="65fastback2+2" data-source="post: 12733695" data-attributes="member: 58051"><p>You can know where you're at if you want. Go read the tons of threads about 1500hp 25+ psi turbo non-intercooled vehicles running 200, 210, 220+ IAT's all on e85...getting the stuff to detonate is INSANELY hard...Ive only read one story of someone getting slight detonation and they were literally tuning a high compression high power motor with the ONLY intentions to see if they could make ethanol detonate. they only noticed a slight drop in power and never once could they get it to fully detonate.</p><p></p><p>I certainly did not just pump e85 and not check it into my truck that was tuned VERY VERY aggressively for over a year and "just got lucky"...I have a good grasp on how the stuff works, what makes it special, etc.</p><p></p><p>I didnt even run a wideband on my vehicle either. Why? If something was going to happen while on e85, it is certainly nothing a wideband was going to keep from happening....we're talking fuel pump failure while WOT or some catastrophic mechanical failure.</p><p></p><p>Im just not talking in here and blowing smoke...I am talking of stuff I did and did for a VERY long period of time.</p><p></p><p></p><p></p><p>Here's the problem and why I am right....you're thinking of ethanol (alcohol) here in GASOLINE terms. You cant do that...they dont equate in any way except they can explode and power a vehicle. Remember, the changes in the alcohol level after 50% sharply drop off and are very non-linear. E60, E70, E85...all MBT's are going to be almost completely identical.</p><p></p><p>The reason C16 has MBT occur at a higher timing value than 93 is because 93 will detonate BEFORE the mechanical properties of the motor can reach MBT.</p><p></p><p>With ethanol over 60% alcohol content, this does not occur (well, technically it does, but the difference is so minute its not really even worth mentioning). This is why I never checked ethanol content...I didnt care if it was e70 or e1million....the properties of the fuel do NOT change directly relating to the percentage of the fuel.</p><p></p><p>And yes, most engines wont like straight timing....we actually ran 18* up to about 3000 rpm and then it jumped from 18* to 21* from 3000 rpm to where we shifted at 5200 rpm. We tried all the way up to 23* and 12.0 AFR on 18#'s but it mechanically wouldnt make any more power on the 1.8L eaton.</p></blockquote><p></p>
[QUOTE="65fastback2+2, post: 12733695, member: 58051"] You can know where you're at if you want. Go read the tons of threads about 1500hp 25+ psi turbo non-intercooled vehicles running 200, 210, 220+ IAT's all on e85...getting the stuff to detonate is INSANELY hard...Ive only read one story of someone getting slight detonation and they were literally tuning a high compression high power motor with the ONLY intentions to see if they could make ethanol detonate. they only noticed a slight drop in power and never once could they get it to fully detonate. I certainly did not just pump e85 and not check it into my truck that was tuned VERY VERY aggressively for over a year and "just got lucky"...I have a good grasp on how the stuff works, what makes it special, etc. I didnt even run a wideband on my vehicle either. Why? If something was going to happen while on e85, it is certainly nothing a wideband was going to keep from happening....we're talking fuel pump failure while WOT or some catastrophic mechanical failure. Im just not talking in here and blowing smoke...I am talking of stuff I did and did for a VERY long period of time. Here's the problem and why I am right....you're thinking of ethanol (alcohol) here in GASOLINE terms. You cant do that...they dont equate in any way except they can explode and power a vehicle. Remember, the changes in the alcohol level after 50% sharply drop off and are very non-linear. E60, E70, E85...all MBT's are going to be almost completely identical. The reason C16 has MBT occur at a higher timing value than 93 is because 93 will detonate BEFORE the mechanical properties of the motor can reach MBT. With ethanol over 60% alcohol content, this does not occur (well, technically it does, but the difference is so minute its not really even worth mentioning). This is why I never checked ethanol content...I didnt care if it was e70 or e1million....the properties of the fuel do NOT change directly relating to the percentage of the fuel. And yes, most engines wont like straight timing....we actually ran 18* up to about 3000 rpm and then it jumped from 18* to 21* from 3000 rpm to where we shifted at 5200 rpm. We tried all the way up to 23* and 12.0 AFR on 18#'s but it mechanically wouldnt make any more power on the 1.8L eaton. [/QUOTE]
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