Hyper just heard about the existence of Water Injection
(305) 643-9447 and (305) 960-2249 are disconnected.
04-13-2010, 04:27 PM
#66
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04-13-2010, 04:32 PM
#67
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You could always throw him a furry orgy... http://www.cracked.com/blog/how-to-t...ing-craigslist
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04-14-2010, 01:32 PM
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1) I will never **** with you people.
2) Methanol and ethanol are relatively easy to ignite due to the fact that they evaporate so well into a gaseous state, which is perfect for ignition. About knock and pre-ignition:
Alcohol is far less prone to a rapid burn resembling an explosion (aka detonation) than most gasoline is. Octane more or less approximates a fuels resistance to this event. Detonation, knock, spark-knock, and ping are all words for this too-rapid burn/explosion if it occurs right when the plug fires. So rather than a nice even flame front you get a sudden burn, a nasty pressure spike, and so on. Pre-ignition is a totaly differet animal. It occurs when the mix lights off totaly independent of spark timing, before the piston even gets to TDC. So while knock is like hitting your piston with a hammer, pre-ignition is like hitting it with a hammer as it is coming at the face of the hammer at like 600FPS.
The two are related, but because alcohol burns so much cooler than gasoline, it often reduces the chances of pre-ignition. This is why people talk about E85 being about 105 octane, yet in terms of the timing maps you can run its behaves more like 110+. The cooler temps you get from the cool burn of the alcohol mean that the conditions that would induce knock are held off a bit. Which is why you see a lot of the Evo, GN, and LSX guys do just fine with pure methanol injection despite the warnings. Which personally I would heed, but hey, its their car.
2) Methanol and ethanol are relatively easy to ignite due to the fact that they evaporate so well into a gaseous state, which is perfect for ignition. About knock and pre-ignition:
Alcohol is far less prone to a rapid burn resembling an explosion (aka detonation) than most gasoline is. Octane more or less approximates a fuels resistance to this event. Detonation, knock, spark-knock, and ping are all words for this too-rapid burn/explosion if it occurs right when the plug fires. So rather than a nice even flame front you get a sudden burn, a nasty pressure spike, and so on. Pre-ignition is a totaly differet animal. It occurs when the mix lights off totaly independent of spark timing, before the piston even gets to TDC. So while knock is like hitting your piston with a hammer, pre-ignition is like hitting it with a hammer as it is coming at the face of the hammer at like 600FPS.
The two are related, but because alcohol burns so much cooler than gasoline, it often reduces the chances of pre-ignition. This is why people talk about E85 being about 105 octane, yet in terms of the timing maps you can run its behaves more like 110+. The cooler temps you get from the cool burn of the alcohol mean that the conditions that would induce knock are held off a bit. Which is why you see a lot of the Evo, GN, and LSX guys do just fine with pure methanol injection despite the warnings. Which personally I would heed, but hey, its their car.
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