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Author	Topic
Bill Sherwood Forums Junkie Location: Brisbane / Gold Coast Registered: May 2002	Re: Cost of porting&polishing and other engine work? Sun, 08 September 2002 01:23 Take two tubes, one with polished inner walls and the other with a carefully roughened surface, and blow air through them. If you carefully measure the airflow, the one with the roughened surface will always flow more air - This is because the carefully roughened surface tends to make the boundary layer of the air touching the walls of the tube stick to the walls better, and so effectively make the tube a bigger diameter than the smooth walled one. It's an easily repeatable test done around the world. [Report message to a moderator]

	Subject	Poster	Date
	Cost of porting&polishing and other engine work?	Stefan	Tue, 03 September 2002 13:40
	Re: Cost of porting&polishing and other engine work?	raSkaS	Tue, 03 September 2002 15:19
	Re: Cost of porting&polishing and other engine work?	mr supra	Wed, 04 September 2002 06:27
	Re: Cost of porting&polishing and other engine work?	raSkaS	Wed, 04 September 2002 16:22
	Re: Cost of porting&polishing and other engine work?	BigBadBenny	Wed, 04 September 2002 21:10
	Re: Cost of porting&polishing and other engine work?	GIN51E	Thu, 05 September 2002 04:32
	Re: Cost of porting&polishing and other engine work?	Celica_RA40	Wed, 04 September 2002 11:08
	Re: Cost of porting&polishing and other engine work?	M.W.P.	Thu, 05 September 2002 08:16
	Re: Cost of porting&polishing and other engine work?	Norbie	Thu, 05 September 2002 08:32
	Re: Cost of porting&polishing and other engine work?	Celica_RA40	Thu, 05 September 2002 12:16
	Re: Cost of porting&polishing and other engine work?	TE72_Turbo	Thu, 05 September 2002 12:41
	Re: Cost of porting&polishing and other engine work?	Gased	Thu, 05 September 2002 13:04
	Re: Cost of porting&polishing and other engine work?	Stefan	Thu, 05 September 2002 13:16
	Re: Cost of porting&polishing and other engine work?	Norbie	Thu, 05 September 2002 23:39
	Re: Cost of porting&polishing and other engine work?	gianttomato	Fri, 06 September 2002 01:20
	Re: Cost of porting&polishing and other engine work?	Youngy	Fri, 06 September 2002 02:33
	Re: Cost of porting&polishing and other engine work?	Norbie	Fri, 06 September 2002 03:35
	Re: Cost of porting&polishing and other engine work?	purpleminiep	Sat, 07 September 2002 14:11
	Re: Cost of porting&polishing and other engine work?	mrshin	Sat, 07 September 2002 14:18
	Re: Cost of porting&polishing and other engine work?	Bill Sherwood	Sun, 08 September 2002 01:23
	Re: Cost of porting&polishing and other engine work?	celicamad85	Sun, 08 September 2002 03:34
	Re: Cost of porting&polishing and other engine work?	GIN51E	Sun, 08 September 2002 04:30
	Re: Cost of porting&polishing and other engine work?	Bill Sherwood	Sun, 08 September 2002 06:36
	Re: Cost of porting&polishing and other engine work?	TE72_Turbo	Sun, 08 September 2002 09:24
	Re: Cost of porting&polishing and other engine work?	Sam	Sun, 08 September 2002 09:36
	Re: Cost of porting&polishing and other engine work?	GIN51E	Sun, 08 September 2002 10:43
	Re: Cost of porting&polishing and other engine work?	celicamad85	Sun, 08 September 2002 10:43
	Re: Cost of porting&polishing and other engine work?	Bill Sherwood	Sun, 08 September 2002 10:47
	Re: Cost of porting&polishing and other engine work?	celicamad85	Sun, 08 September 2002 11:00
	Re: Cost of porting&polishing and other engine work?	Celica_RA40	Sun, 08 September 2002 13:12
	Re: Cost of porting&polishing and other engine work?	allencr	Sun, 08 September 2002 13:38
	Re: Cost of porting&polishing and other engine work?	Youngy	Sun, 08 September 2002 18:39
	Re: Cost of porting&polishing and other engine work?	mrshin	Sun, 08 September 2002 22:25
	Re: Cost of porting&polishing and other engine work?	thetoyman75	Tue, 10 September 2002 04:22

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