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oldcorollas Forums Junkie Location: Kita-Ku, Sapporo, Japan Registered: January 2003	Re: Ethanol fuel and turbo engines... Thu, 27 October 2005 13:25 as i previously understood it, Avgas is designed to resist pinging/detonation and have a slow flame speed because of the large bores in aircraft engines... the bore size, combned with low rpm, means that you have a while to wait for things to happen, and you don't want a flamefront just bouncing around in there... and the last thing you want to do in a plane is to reduce power due to a pinging problem.... so... more detonation resistant = more reliable and allows enigne to be run leaner, and slow flame speed to give time for thigs to happen (yah, real scientific ) in cars, the detonation resistance means you MUST run more advance to get the same power, but you can run a bit more advance and compression and get a little more power out of it... for race motors it's also good as the quality and conistency is meant to be better... an aeronautical engineer friend suggested that in high rpm engines, the gains (apart from detonation resistance) may not be so great as you have to run heaps more advance just to get the full burn happening, and the charge may not be fully ignited on the way down, or already burnt before piston is turning to go down..... but most ppl just see that it has higher octane, they can run more advance, and think they automatically get more power because of that.. [Report message to a moderator]

	Subject	Poster	Date
	Ethanol fuel and turbo engines...	billmchenry	Sun, 23 October 2005 08:12
	Re: Ethanol fuel and turbo engines...	oldcorollas	Sun, 23 October 2005 08:22
	Re: Ethanol fuel and turbo engines...	billmchenry	Sun, 23 October 2005 08:58
	Re: Ethanol fuel and turbo engines...	oldcorollas	Sun, 23 October 2005 09:02
	Re: Ethanol fuel and turbo engines...	billmchenry	Sun, 23 October 2005 09:31
	Re: Ethanol fuel and turbo engines...	Big Rob	Sun, 23 October 2005 09:22
	Re: Ethanol fuel and turbo engines...	kingmick	Sun, 23 October 2005 09:43
	Re: Ethanol fuel and turbo engines...	billmchenry	Sun, 23 October 2005 09:52
	Re: Ethanol fuel and turbo engines...	billmchenry	Sun, 23 October 2005 10:05
	Re: Ethanol fuel and turbo engines...	oldcorollas	Sun, 23 October 2005 10:12
	Re: Ethanol fuel and turbo engines...	jeffro RA28	Sun, 23 October 2005 09:47
	Re: Ethanol fuel and turbo engines...	jeffro RA28	Sun, 23 October 2005 09:56
	Re: Ethanol fuel and turbo engines...	kingmick	Sun, 23 October 2005 09:57
	Re: Ethanol fuel and turbo engines...	hurricane	Sun, 23 October 2005 10:05
	Re: Ethanol fuel and turbo engines...	kingmick	Sun, 23 October 2005 10:05
	Re: Ethanol fuel and turbo engines...	billmchenry	Sun, 23 October 2005 10:15
	Re: Ethanol fuel and turbo engines...	jeffro RA28	Sun, 23 October 2005 10:12
	Re: Ethanol fuel and turbo engines...	oldcorollas	Sun, 23 October 2005 10:16
	Re: Ethanol fuel and turbo engines...	billmchenry	Sun, 23 October 2005 10:19
	Re: Ethanol fuel and turbo engines...	billmchenry	Sun, 23 October 2005 10:25
	Re: Ethanol fuel and turbo engines...	jeffro RA28	Sun, 23 October 2005 10:19
	Re: Ethanol fuel and turbo engines...	jeffro RA28	Sun, 23 October 2005 10:32
	Re: Ethanol fuel and turbo engines...	love ke70	Sun, 23 October 2005 10:45
	Re: Ethanol fuel and turbo engines...	jeffro RA28	Sun, 23 October 2005 11:29
	Re: Ethanol fuel and turbo engines...	love ke70	Sun, 23 October 2005 11:33
	Re: Ethanol fuel and turbo engines...	billmchenry	Sun, 23 October 2005 10:46
	Re: Ethanol fuel and turbo engines...	Big Rob	Sun, 23 October 2005 12:30
	Re: Ethanol fuel and turbo engines...	thechuckster	Sun, 23 October 2005 13:36
	Re: Ethanol fuel and turbo engines...	Blown86	Sun, 23 October 2005 13:40
	Re: Ethanol fuel and turbo engines...	kingmick	Sun, 23 October 2005 21:55
	Re: Ethanol fuel and turbo engines...	hurricane	Sun, 23 October 2005 22:49
	Re: Ethanol fuel and turbo engines...	kingmick	Sun, 23 October 2005 23:00
	Re: Ethanol fuel and turbo engines...	Blown86	Tue, 25 October 2005 14:47
	Re: Ethanol fuel and turbo engines...	jeffro RA28	Mon, 24 October 2005 11:30
	Re: Ethanol fuel and turbo engines...	hurricane	Tue, 25 October 2005 22:22
	Re: Ethanol fuel and turbo engines...	RAV-GT4	Wed, 26 October 2005 04:07
	Re: Ethanol fuel and turbo engines...	kingmick	Wed, 26 October 2005 10:48
	Re: Ethanol fuel and turbo engines...	Blown86	Wed, 26 October 2005 15:01
	Re: Ethanol fuel and turbo engines...	sxr01r	Thu, 27 October 2005 13:18
	Re: Ethanol fuel and turbo engines...	oldcorollas	Thu, 27 October 2005 13:25
	Re: Ethanol fuel and turbo engines...	oldcorollas	Thu, 27 October 2005 13:29
	Re: Ethanol fuel and turbo engines...	oldcorollas	Thu, 27 October 2005 13:31

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