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Toymods » Tech & Conversions » Head flow and flame propegation issues in turbocharged cars Show: Today's Posts  :: Show Polls  Email to friend

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RWDboy Forums Junkie Location: South Australia Registered: July 2002	Re: Head flow and flame propegation issues in turbocharged cars Mon, 01 November 2004 03:54 Quote: Then why do modern N/A engines tend to have about the same power of older N/A engines, even though the new ones run variable timing and higher compression? Shouldn't more power follow from more efficiency? would say that, in general, modern engines have more power per displacement than old engines. Alot of it is to do with the way modern engines are tuned, it's generally geared towards good emissions and good fuel economy. Also you have to take into account that modern engines have WAY better torque curves than older engines...to get good power just requires alot of air flow (think big ports, cams etc) alot of older engines were totally gutless outside of their good torque range, 90% of torque was seen over only 1000rpm or so rather than modern engines where 90% of torque is usually available over a 4000rpm range (at least). That's just the half of it though. The S2000 for example puts out 170+kW from a 2.0 litre engine and can still produce a modern level of emissions, that is one HELL of a feat. As for it's combustion chamber shape - good question afaik modern engines are designed to be efficient over a big rpm range, it's part of the whole 'economy' thing. Quote: But you would think that if more of the fuel was burnt, you would end up with more power... anyone have proof of this? Generally yes, if the combustion is more complete then this would usually be the case...I think... [Report message to a moderator]

	Subject	Poster	Date
	Head flow and flame propegation issues in turbocharged cars	Shraka	Wed, 27 October 2004 02:14
	Re: Head flow and flame propegation issues in turbocharged cars	Bill Sherwood	Wed, 27 October 2004 02:21
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Wed, 27 October 2004 02:30
	Re: Head flow and flame propegation issues in turbocharged cars	oldcorollas	Wed, 27 October 2004 02:44
	Re: Head flow and flame propegation issues in turbocharged cars	oldcorollas	Wed, 27 October 2004 02:50
	Re: Head flow and flame propegation issues in turbocharged cars	Bill Sherwood	Wed, 27 October 2004 02:56
	Re: Head flow and flame propegation issues in turbocharged cars	oldcorollas	Wed, 27 October 2004 02:58
	Re: Head flow and flame propegation issues in turbocharged cars	Bill Sherwood	Wed, 27 October 2004 02:43
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Wed, 27 October 2004 02:57
	Re: Head flow and flame propegation issues in turbocharged cars	Bill Sherwood	Wed, 27 October 2004 03:06
	Re: Head flow and flame propegation issues in turbocharged cars	Bill Sherwood	Wed, 27 October 2004 02:49
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Wed, 27 October 2004 03:39
	Re: Head flow and flame propegation issues in turbocharged cars	oldcorollas	Wed, 27 October 2004 03:49
	Re: Head flow and flame propegation issues in turbocharged cars	Bill Sherwood	Wed, 27 October 2004 04:00
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Wed, 27 October 2004 04:20
	Re: Head flow and flame propegation issues in turbocharged cars	Joshstix	Wed, 27 October 2004 04:28
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Wed, 27 October 2004 06:29
	Re: Head flow and flame propegation issues in turbocharged cars	indigoid	Thu, 28 October 2004 11:40
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Fri, 29 October 2004 03:23
	Re: Head flow and flame propegation issues in turbocharged cars	da_horse	Wed, 27 October 2004 20:34
	Re: Head flow and flame propegation issues in turbocharged cars	Norbie	Thu, 28 October 2004 01:49
	Re: Head flow and flame propegation issues in turbocharged cars	da_horse	Thu, 28 October 2004 11:24
	Re: Head flow and flame propegation issues in turbocharged cars	rokusan	Thu, 28 October 2004 12:04
	Re: Head flow and flame propegation issues in turbocharged cars	takai	Fri, 29 October 2004 12:41
	Re: Head flow and flame propegation issues in turbocharged cars	indigoid	Fri, 29 October 2004 12:44
	Re: Head flow and flame propegation issues in turbocharged cars	RWDboy	Fri, 29 October 2004 14:25
	Re: Head flow and flame propegation issues in turbocharged cars	M.W.P.	Fri, 29 October 2004 16:44
	Re: Head flow and flame propegation issues in turbocharged cars	RWDboy	Sat, 30 October 2004 03:59
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Mon, 01 November 2004 03:15
	Re: Head flow and flame propegation issues in turbocharged cars	RWDboy	Mon, 01 November 2004 03:54
	Re: Head flow and flame propegation issues in turbocharged cars	Joshstix	Mon, 01 November 2004 06:04
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Mon, 01 November 2004 06:15
	Re: Head flow and flame propegation issues in turbocharged cars	oldcorollas	Mon, 01 November 2004 06:18
	Re: Head flow and flame propegation issues in turbocharged cars	justcallmefrank	Mon, 01 November 2004 06:19
	Re: Head flow and flame propegation issues in turbocharged cars	Joshstix	Mon, 01 November 2004 06:21
	Re: Head flow and flame propegation issues in turbocharged cars	oldcorollas	Mon, 01 November 2004 06:48
	Re: Head flow and flame propegation issues in turbocharged cars	justcallmefrank	Mon, 01 November 2004 07:34
	Re: Head flow and flame propegation issues in turbocharged cars	Mr DOHC	Mon, 01 November 2004 08:28
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Mon, 01 November 2004 09:26
	Re: Head flow and flame propegation issues in turbocharged cars	oldcorollas	Mon, 01 November 2004 09:04
	Re: Head flow and flame propegation issues in turbocharged cars	justcallmefrank	Mon, 01 November 2004 09:07
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Mon, 01 November 2004 09:27
	Re: Head flow and flame propegation issues in turbocharged cars	justcallmefrank	Mon, 01 November 2004 09:32
	Re: Head flow and flame propegation issues in turbocharged cars	RWDboy	Mon, 01 November 2004 13:08
	Re: Head flow and flame propegation issues in turbocharged cars	Shraka	Mon, 01 November 2004 13:13
	Re: Head flow and flame propegation issues in turbocharged cars	earlyrolla	Mon, 01 November 2004 14:38

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