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oldcorollas Forums Junkie Location: Kita-Ku, Sapporo, Japan Registered: January 2003	Re: Exhaust Myth... Fact or Fiction? Thu, 10 March 2005 08:25 jkvsnn wrote on Thu, 17 February 2005 09:58 Oldcorollas, Length of the primaries is 763mm +/- 1mm across the four of them. This is measured from the head to the entry into the merge collector. We used the 3D solid modelling software that we use for structural drafting at work to design the headers, it was a real struggle when working with pipes so large to get them all the same length and also have them all neatly aligned when they come out the side of the chassis. My friend did a really cool animated gif that overlays a photo of the finished headers and an image from the model and you can see how close we got to the design. I'd post it up but its 5mb Cheers, Julian. bugger, missed this post... those 4-1's look and sound like they have been designed very well not sure if they are better than the stock extractors, but the length of the pipes suggest they will be good across a reasonable rev range, not just up high (esp compared to the 'normal' 4-1's which are only 1 or 2 feet long) (edit: also funny to see 4-1 "tuned" extractors that don't even follow firing order ) have you had a chance to see how they go? would be very interested to hear what you think of the resonance and where the sound 'smooths out' etc etc.. i'd be very interested to see the gif too.. i can host at uni for a while also. Cya, Stewart [Updated on: Thu, 10 March 2005 08:26] [Report message to a moderator]

	Subject	Poster	Date
	Exhaust Myth... Fact or Fiction?	Matt-itude	Wed, 09 February 2005 08:13
	Re: Exhaust Myth... Fact or Fiction?	Kyosho	Wed, 09 February 2005 08:24
	Re: Exhaust Myth... Fact or Fiction?	Matt-itude	Wed, 09 February 2005 08:29
	Re: Exhaust Myth... Fact or Fiction?	Fr3aK	Wed, 09 February 2005 09:11
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Wed, 09 February 2005 09:36
	Re: Exhaust Myth... Fact or Fiction?	Kyosho	Wed, 09 February 2005 09:34
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Wed, 09 February 2005 08:47
	Re: Exhaust Myth... Fact or Fiction?	Matt-itude	Wed, 09 February 2005 08:51
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Wed, 09 February 2005 08:57
	Re: Exhaust Myth... Fact or Fiction?	towe_001	Fri, 11 March 2005 12:23
	Re: Exhaust Myth... Fact or Fiction?	draven	Wed, 09 February 2005 08:37
	Re: Exhaust Myth... Fact or Fiction?	Matt-itude	Wed, 09 February 2005 08:43
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Wed, 09 February 2005 08:49
	Re: Exhaust Myth... Fact or Fiction?	Farkurnell	Wed, 09 February 2005 09:30
	Re: Exhaust Myth... Fact or Fiction?	Kyosho	Wed, 09 February 2005 09:36
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Wed, 09 February 2005 09:40
	Re: Exhaust Myth... Fact or Fiction?	selk	Mon, 14 March 2005 08:39
	Re: Exhaust Myth... Fact or Fiction?	R-jay	Mon, 14 March 2005 19:49
	Re: Exhaust Myth... Fact or Fiction?	ke30king	Wed, 16 March 2005 12:25
	Re: Exhaust Myth... Fact or Fiction?	Farkurnell	Wed, 09 February 2005 09:45
	Re: Exhaust Myth... Fact or Fiction?	draven	Wed, 09 February 2005 09:47
	Re: Exhaust Myth... Fact or Fiction?	justcallmefrank	Wed, 09 February 2005 10:12
	Re: Exhaust Myth... Fact or Fiction?	MR 1JZ	Thu, 10 February 2005 00:58
	Re: Exhaust Myth... Fact or Fiction?	chrisss	Wed, 09 February 2005 09:49
	Re: Exhaust Myth... Fact or Fiction?	rokusan	Wed, 09 February 2005 10:26
	Re: Exhaust Myth... Fact or Fiction?	Bugman	Wed, 09 February 2005 22:28
	Re: Exhaust Myth... Fact or Fiction?	willwal98	Wed, 09 February 2005 22:30
	Re: Exhaust Myth... Fact or Fiction?	Bugman	Wed, 09 February 2005 22:41
	Re: Exhaust Myth... Fact or Fiction?	Mr Revhead	Wed, 09 February 2005 23:55
	Re: Exhaust Myth... Fact or Fiction?	OPPY	Thu, 10 February 2005 02:16
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Thu, 10 February 2005 05:22
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Thu, 10 February 2005 05:25
	Re: Exhaust Myth... Fact or Fiction?	greenta22	Thu, 10 February 2005 02:32
	Re: Exhaust Myth... Fact or Fiction?	buck naked	Thu, 10 February 2005 03:47
	Re: Exhaust Myth... Fact or Fiction?	Sam_Q	Thu, 10 February 2005 07:22
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Thu, 10 February 2005 07:45
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Thu, 10 February 2005 07:57
	Re: Exhaust Myth... Fact or Fiction?	Sam_Q	Thu, 10 February 2005 07:53
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Thu, 10 February 2005 07:59
	Re: Exhaust Myth... Fact or Fiction?	YelloRolla	Thu, 10 February 2005 08:06
	Re: Exhaust Myth... Fact or Fiction?	Mr Revhead	Thu, 10 February 2005 09:54
	Re: Exhaust Myth... Fact or Fiction?	Big T	Thu, 10 February 2005 10:57
	Re: Exhaust Myth... Fact or Fiction?	jkvsnn	Thu, 10 February 2005 11:57
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Fri, 11 February 2005 05:24
	Re: Exhaust Myth... Fact or Fiction?	jkvsnn	Wed, 16 February 2005 22:58
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Thu, 10 March 2005 08:25
	Re: Exhaust Myth... Fact or Fiction?	indigoid	Thu, 10 March 2005 09:22
	Re: Exhaust Myth... Fact or Fiction?	greenta22	Thu, 10 March 2005 23:07
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Fri, 11 March 2005 00:34
	Re: Exhaust Myth... Fact or Fiction?	Hunty	Thu, 10 February 2005 12:09
	Re: Exhaust Myth... Fact or Fiction?	Byatch	Sat, 12 February 2005 05:57
	Re: Exhaust Myth... Fact or Fiction?	3S-GE_Man	Sat, 12 February 2005 06:52
	Re: Exhaust Myth... Fact or Fiction?	EMD-AE86	Sat, 12 February 2005 08:25
	Re: Exhaust Myth... Fact or Fiction?	RWDboy	Sat, 12 February 2005 13:25
	Re: Exhaust Myth... Fact or Fiction?	Dunno	Sun, 13 February 2005 13:08
	Re: Exhaust Myth... Fact or Fiction?	Hunty	Thu, 17 February 2005 02:01
	Re: Exhaust Myth... Fact or Fiction?	jkvsnn	Thu, 17 February 2005 02:13
	Re: Exhaust Myth... Fact or Fiction?	79Rona	Fri, 11 March 2005 00:57
	Re: Exhaust Myth... Fact or Fiction?	mick	Fri, 11 March 2005 10:10
	Re: Exhaust Myth... Fact or Fiction?	Toobs	Sat, 12 March 2005 14:54
	Re: Exhaust Myth... Fact or Fiction?	river	Sat, 12 March 2005 23:33
	Re: Exhaust Myth... Fact or Fiction?	towe_001	Mon, 14 March 2005 01:36
	Re: Exhaust Myth... Fact or Fiction?	notorius	Mon, 14 March 2005 04:41
	Re: Exhaust Myth... Fact or Fiction?	73ke25	Tue, 15 March 2005 11:04
	Re: Exhaust Myth... Fact or Fiction?	hemi twofifteen turbo	Tue, 15 March 2005 12:13
	Re: Exhaust Myth... Fact or Fiction?	Norbie	Tue, 15 March 2005 12:42
	Re: Exhaust Myth... Fact or Fiction?	73ke25	Wed, 16 March 2005 12:30
	Re: Exhaust Myth... Fact or Fiction?	Norbie	Wed, 16 March 2005 13:37
	Re: Exhaust Myth... Fact or Fiction?	greenta22	Mon, 14 March 2005 07:33
	Re: Exhaust Myth... Fact or Fiction?	notorius	Mon, 14 March 2005 08:33
	Re: Exhaust Myth... Fact or Fiction?	Allan	Tue, 15 March 2005 13:01
	Re: Exhaust Myth... Fact or Fiction?	510rob	Tue, 15 March 2005 17:32
	Re: Exhaust Myth... Fact or Fiction?	R-jay	Tue, 15 March 2005 22:58
	Re: Exhaust Myth... Fact or Fiction?	510rob	Tue, 15 March 2005 23:00
	Re: Exhaust Myth... Fact or Fiction?	jeffro RA28	Wed, 16 March 2005 09:24
	Re: Exhaust Myth... Fact or Fiction?	YelloRolla	Wed, 16 March 2005 09:59
	Re: Exhaust Myth... Fact or Fiction?	oldcorollas	Wed, 16 March 2005 11:17
	Re: Exhaust Myth... Fact or Fiction?	jeffro RA28	Thu, 17 March 2005 09:10
	Re: Exhaust Myth... Fact or Fiction?	jeffro RA28	Wed, 16 March 2005 10:45
	Re: Exhaust Myth... Fact or Fiction?	ke30king	Wed, 16 March 2005 12:57
	Re: Exhaust Myth... Fact or Fiction?	ViPeR_NiPPleX	Wed, 16 March 2005 13:41
	Re: Exhaust Myth... Fact or Fiction?	tom210	Wed, 30 March 2005 14:13

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