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oldcorollas Forums Junkie Location: Kita-Ku, Sapporo, Japan Registered: January 2003	Re: flat TORQUE curves Thu, 26 June 2003 06:23 bayka wrote on Thu, 26 June 2003 15:49 Look, i don't need a redefinition of torque dude, i think thats been covered. . . Yeh, i understand maximum torque produced by engine is generally at maxiumum fill which is mainly determined by cam's and timing. And so for street cars, this is desireable at cruising speed rpm for best petrol economy, However : ---- Im still wondering how BMW and porsche engines have "iron flat" torque curves. How does an engine do this?? Cheers for any input (not redefinitions of torque!!!) cool, so you understand that the amount, or extent, of cylinder filling (commonly referred to as "volumetric efficiency") is directly related to the torque curve? (the VE and torque curve are almost mirror images, except for some mechanical loss as rpm increases) so how do they get their "iron flat" torque curves? the flat torque curve reflects the VE curve, so by definition, the Beemer and porsche motors must have consistent cylinder filling (VE) over a wide range of rpm. How do they do this? by spending lots of money on cylinder head and intake tract development, with the end goal of having high volumetric efficiency over as wide a range of engine speeds possible. also by having variable valve timing and lift, and many other gismos and gadgets (variable runner length etc). basically what it comes down to is that they have a far more 'efficient' design. is that what you wanted to know? Cya, Stewart [Report message to a moderator]

	Subject	Poster	Date
	TORQUE	BAD22	Sat, 21 June 2003 04:43
	Re: TORQUE	oldcorollas	Sat, 21 June 2003 07:20
	Re: TORQUE	trent_kershaw	Sat, 21 June 2003 09:52
	Re: TORQUE	wilbo666	Sat, 21 June 2003 12:29
	Re: TORQUE	BAD22	Sat, 21 June 2003 13:06
	Re: TORQUE	TA22-3SGTE	Sat, 21 June 2003 13:20
	Re: TORQUE	gianttomato	Sun, 22 June 2003 02:18
	Re: TORQUE	rusty	Mon, 23 June 2003 19:37
	Re: TORQUE	BAD22	Tue, 24 June 2003 01:57
	Re: TORQUE	oldcorollas	Tue, 24 June 2003 07:17
	Re: TORQUE	rusty	Tue, 24 June 2003 08:33
	Re: TORQUE	oldcorollas	Tue, 24 June 2003 09:32
	Re: TORQUE	gianttomato	Tue, 24 June 2003 09:42
	Re: TORQUE	Gremlin	Thu, 26 June 2003 02:16
	Re: TORQUE	rusty	Tue, 24 June 2003 10:29
	Re: TORQUE	oldcorollas	Tue, 24 June 2003 11:12
	Re: TORQUE	gianttomato	Tue, 24 June 2003 11:46
	Re: TORQUE	oldcorollas	Tue, 24 June 2003 12:01
	Re: TORQUE	trent_kershaw	Tue, 24 June 2003 14:03
	Re: TORQUE	NO-18r	Sat, 21 June 2003 08:48
	Re: TORQUE	BAD22	Sat, 21 June 2003 08:49
	Re: TORQUE	manipulate	Sat, 21 June 2003 08:51
	Re: TORQUE	manipulate	Sat, 21 June 2003 13:10
	Re: TORQUE	BAD22	Sat, 21 June 2003 13:12
	Re: TORQUE	cam_RA40	Sat, 21 June 2003 23:17
	Re: TORQUE	JDM hachi	Sat, 21 June 2003 22:52
	Re: TORQUE	manipulate	Sun, 22 June 2003 01:55
	Re: TORQUE	charliechalk	Sun, 22 June 2003 11:26
	Re: TORQUE	BAD22	Sun, 22 June 2003 15:58
	Re: TORQUE	gianttomato	Mon, 23 June 2003 01:05
	Re: TORQUE	charliechalk	Mon, 23 June 2003 08:06
	Re: TORQUE	BAD22	Mon, 23 June 2003 10:00
	Re: TORQUE	Super Jamie	Tue, 24 June 2003 11:04
	Re: TORQUE	kingmick	Tue, 24 June 2003 12:18
	Re: TORQUE	THE WITZL	Tue, 24 June 2003 12:27
	Re: TORQUE	trent_kershaw	Tue, 24 June 2003 12:44
	Re: TORQUE	THE WITZL	Tue, 24 June 2003 13:06
	Re: TORQUE	rusty	Tue, 24 June 2003 16:35
	Re: TORQUE	juzzo84	Tue, 24 June 2003 21:08
	Re: TORQUE	boudan	Tue, 24 June 2003 22:49
	Re: TORQUE	Super Jamie	Wed, 25 June 2003 07:26
	Re: TORQUE and shite stirring	oldcorollas	Wed, 25 June 2003 12:27
	Re: TORQUE and shite stirring	oldcorollas	Wed, 25 June 2003 12:36
	Re: TORQUE	boudan	Thu, 26 June 2003 00:37
	Re: TORQUE	bayka	Wed, 25 June 2003 17:41
	Re: TORQUE	Norbie	Wed, 25 June 2003 22:37
	Re: TORQUE	dar_sbb	Thu, 26 June 2003 01:58
	Re: TORQUE	bayka	Thu, 26 June 2003 05:49
	Re: flat TORQUE curves	oldcorollas	Thu, 26 June 2003 06:23
	Re: flat TORQUE curves	Nark	Thu, 26 June 2003 06:45
	Re: flat TORQUE curves	oldcorollas	Thu, 26 June 2003 07:03

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