Just random thinking out loud.........And I think, Superchargers are WAYYYYYY different than turbochargers are on the stuff. Turbochargers have no real way to take direct advantage of the cooling/evaporation effects of the fuel. They will to an extent, but not nearly the way a blower engine benefits, and thus, final C/R needs to be taken cautiously using E85 and Blower numbers on a turbo application.
Ray
Dont forget one thing Ray, Hes talking about EFI on this thing, so its going to inject that nice cooling fuel into it after the turbos.
Find Unchained on pb.com and theturboforums.com
he has done it and knows his shit.
X 100, Mark (Unchained) is the one you need to talk to !!!
Marks motor, 540 ci, twin turbo, EFI, E85, 29.5 lbs boost = 1841 torque @ 4800 rpm and 1810 HP @ 5800
http://www.performanceboats.com/dyno/52723-540-arias-twin-turbo-efi-dyno-video-2.html#post911003 Heres something I copied and saved when Ray and I where considering E85 blower motors, some interesting facts here.
Ethanol vs Methanol
Methanol and Ethanol both have advantages and disadvantages over fossil fuel gasoline. For instance, both alcohols can run at a much higher compression ratio without octane-boosting additives
Alcohols burn more completely because their molecules contain oxygen;
Oxygenated chemical compounds contain oxygen as a part of their chemical structure. The term usually refers to oxygenated fuels. Oxygenates are usually employed as gasoline additives to reduce carbon monoxide that is created during the burning of the fuel….. Carbon Monoxide is BAD!
The oxygenate MTBE has been found to have contaminated groundwater, mostly through leaks in underground gasoline storage tanks. In 2004, California and New York banned MTBE, generally replacing it with ethanol.(Ethanol is Biodegradible…..wont harm the environment!)
Alcohol fuels such as methanol and ethanol, are partially oxidized fuels and need to be run at much richer mixtures than gasoline. As a consequence, the total volume of fuel burned per cycle counterbalances the lower energy per unit volume, and the net energy released per cycle is higher.
carbon monoxide emissions are 100% lower than fossil-fueled engines because the only products of an alcohol combustion reaction are carbon dioxide (plants breath this), water (plants need this) , and heat .
Methanol is the lightest and simplest alcohol, produced from the natural gas component methane. Its application is limited due to its toxicity…..IT WILL KILL YOU!
PURE Ethanol, also known as grain alcohol or ethyl alcohol, is most commonly used in alcoholic beverages. However, it may also be used as a fuel….YOU CAN DRINK IT!..but dont because it is denatured so you CANT!
Methanol’s octane rating is 129 (RON), 103 (MON), which equates to 113 (AKI)
Ethanol's octane rating is 129 (RON), 102 (MON), which equates to 116 (AKI).
Gasoline is approximately 91 (RON), 81 (MON), equal to 86 (AKI)
AKI is 'Anti-Knock Index'
contrary to popular belief.....It should be noted that octane rating does not relate to the energy content of the fuel or heating value, nor the speed at which the flame initiated by the spark plug propagates across the cylinder. It is only a measure of the fuel's resistance to autoignition.
Ethanol is harder to ignite than Methanol.
Ethanol is less likely to have detonation than Methanol.
Ethanol has 27% less energy per Gallon than Gas.
Methanol has 55% less energy per Gallon than Gas.
This is why more volume is required for each of the Alcohol fuels and why Methanol take almost twice as much fuel as Ethanol over gasoline.
If gasoline is run at its preferred maximum power air/fuel mixture of 12.5:1 air/fuel ratio, it will release approximately 20 MJ (about 19,000 BTU) of energy, where ethanol run at its preferred maximum power mixture of 6.5:1 air/fuel ratio will liberate approximately 25.7 MJ (24,400 BTU), and methanol at a 4.5:1 air/fuel ratio liberates about 29.1 MJ (27,650 BTU).
Methanol makes the most power (29.1 MJ), but also takes more fuel than Ethanol to make that power…..
Apples to Apples….. Ethanol will out perform Methanol.
Methanol gets its power from the volume consumed.
Combustion:
Methanol combustion is: 2CH3OH + 3O2 → 2CO2 + 4H2O + heat
Ethanol combustion is: C2H5OH + 3O2 → 2CO2 + 3H2O + heat
CO2 = carbon dioxide (plants breath this)
H2O = water (plants need this) ,
heat = heat.
As you can see above, Methanol produces more water during combustion than ethanol. Methanol = 4H2O to Ethanol = 3H2O….
Hydrogen (H) may reduce knock by contributing its high thermal conductivity
Methanol has 4 hydrogens, Ethanol has 6 hydrogens,
= Ethanol absorbs more heat and therefor is more energy efficient, effeciency in the right conditions is power without the knock.
Given the higher octane rating of Ethanol, Modified engines are capable of generating equivalent or higher horsepower and torque burning Ethanol than conventional gasoline despite the lower energy density of Ethanol.
Alcohols higher octane allows an increase of an engine's compression ratio for increased thermal efficiency. In one study, complex engine controls and increased exhaust gas recirculation allowed a compression ratio of 19.5 with Ethanol to E50…..
With Ethanol thermal efficiency, up to approximately that for a diesel, was achieved.
This would result in the MPG (miles per gallon) of a dedicated ethanol vehicle to be about the same as one burning gasoline…..your not getting that with Methanol because of the volume needed to produce the power!
Hope this helps set some things clear……
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