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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Meth Dyno Numbers :)



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      09-08-2009, 09:38 AM   #45
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Originally Posted by jb's335 View Post
Flash point is a good idea, but if you thought of that as the only cause of detonation then gas would combust at -44* C!! The definition of flashpoint I found was the lowest temperature a liquid can be at to create vapors that are ignitable in air. Therefor flashpoint is not what we need to be looking at.

Octane is. Octane is the amount of pressure, temperature, etc. that it takes to create a combustion without an ignition source, i.e. spark! Methanol has a VERY high octane, which is why people use it to keep detonation from happening and is why it effectively raises the octane of the gas you are currently running. If you have a high octane mixture, it doesn't matter what flashpoint it has because it can stay stable much longer and under more extreme pressures.

Methanol may be more volatile a liquid, but when it comes to using it to cause a combustion it helps because of its ability to withstand pressure and temperature better BEFORE combusting on its own.
I think you are misunderstanding what we are talking about. oddjob, was concerned about safety in using any more methanol than a 50/50 mix I think.
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      09-08-2009, 05:42 PM   #46
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ASR Turbos+LSD+Meth= :D
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i cant wait for the production version... its gunna be a game changer on the highway vs dci, otherwise same mods.
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      09-08-2009, 06:03 PM   #47
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looks very functional and I cant wait to see the final product with numbers
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