Toymods Car Club Inc: Tech & Conversions => Is 5 valve better than 4 valve?

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emmac
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Location:
Gippsland Lakes. Vic.
Registered:
March 2004

Re: Is 5 valve better than 4 valve?	Wed, 01 June 2005 14:45

Intresting discussion. On the subject of "flow interference between valves" my simple old mind would have me thinking that exactly the same thing happens with two inlet valves side by side as compared to only one valve,or a lump on a piston or the combustion chamber wall. But that even with perhaps more shaded or "interference" area's on the third valve that overall flow would still be greater even if not necessarily in proportion.I also really think you would need people with the extremely specialised expertiese & sophisticated scientific test equipment like Ricardo or MIRA to define this.I can't imagine this being a contributing factor to making a 5v-cyl. less functional than a 4v-cyl.IF IT REALLY IS. IIRC the Cosworth History book had a piece in it by the great Keith Duckworth that wasn't very complimentary to 5v-cyl. or Yamaha's use of it.If i'd never lent the book I could tell you what he said. I also think Yamaha's F1 5v engine from the 90's was used in a supercar they built for the road in more basic form. emmac [Report message to a moderator]

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Subject Poster Date

Read Message Is 5 valve better than 4 valve? 170bhp Fri, 27 May 2005 12:54
Re: Is 5 valve better than 4 valve? Big T Fri, 27 May 2005 13:39
Re: Is 5 valve better than 4 valve? oldcorollas Fri, 27 May 2005 14:49
Re: Is 5 valve better than 4 valve? takai Fri, 27 May 2005 15:09
Read Message Re: Is 5 valve better than 4 valve? Jonny2TG Fri, 27 May 2005 15:34
Re: Is 5 valve better than 4 valve? takai Sat, 28 May 2005 00:26
Re: Is 5 valve better than 4 valve? CLG Sat, 28 May 2005 01:12
Re: Is 5 valve better than 4 valve? Jonny2TG Sat, 28 May 2005 01:42
Read Message Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 05:16
Re: Is 5 valve better than 4 valve? floody Tue, 31 May 2005 13:06
Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 05:33
Re: Is 5 valve better than 4 valve? Henn Sat, 28 May 2005 05:41
Read Message Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 05:48
Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 05:46
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 06:05
Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 06:07
Read Message Re: Is 5 valve better than 4 valve? Acoustic Tue, 31 May 2005 16:03
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 06:10
Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 06:15
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 06:14
Read Message Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 06:17
Re: Is 5 valve better than 4 valve? shinybluesteel Sat, 28 May 2005 06:40
Re: Is 5 valve better than 4 valve? JFAllen Sat, 28 May 2005 07:28
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 06:39
Read Message Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 06:43
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 06:43
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 06:45
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 06:48
Read Message Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 06:58
Re: Is 5 valve better than 4 valve? Jonny2TG Sat, 28 May 2005 07:52
Re: Is 5 valve better than 4 valve? takai Sat, 28 May 2005 08:24
Re: Is 5 valve better than 4 valve? bored Sat, 28 May 2005 10:45
Read Message Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 10:08
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 11:12
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 11:14
Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 11:24
Read Message Re: Is 5 valve better than 4 valve? takai Sat, 28 May 2005 11:19
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 11:32
Re: Is 5 valve better than 4 valve? bored Sat, 28 May 2005 11:40
Re: Is 5 valve better than 4 valve? takai Sat, 28 May 2005 11:43
Read Message Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 11:48
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 11:49
Re: Is 5 valve better than 4 valve? takai Sat, 28 May 2005 11:53
Re: Is 5 valve better than 4 valve? IRA11Y Mon, 06 June 2005 07:26
Read Message Re: Is 5 valve better than 4 valve? ke382TG Sat, 28 May 2005 11:50
Re: Is 5 valve better than 4 valve? 170bhp Sat, 28 May 2005 11:59
Re: Is 5 valve better than 4 valve? ke382TG Sat, 28 May 2005 12:37
Re: Is 5 valve better than 4 valve? Bill Sherwood Sat, 28 May 2005 13:58
Read Message Re: Is 5 valve better than 4 valve? boudan Sat, 28 May 2005 15:22
Re: Is 5 valve better than 4 valve? Acoustic Tue, 31 May 2005 16:16
Re: Is 5 valve better than 4 valve? *rivmasta* Wed, 01 June 2005 00:38
Re: Is 5 valve better than 4 valve? off-road Sun, 05 June 2005 09:14
Read Message Re: Is 5 valve better than 4 valve? off-road Sun, 05 June 2005 09:31
Re: Is 5 valve better than 4 valve? Bill Sherwood Sun, 29 May 2005 01:29
Re: Is 5 valve better than 4 valve? Ben Wilson Tue, 31 May 2005 00:03
Re: Is 5 valve better than 4 valve? Joshstix Sun, 29 May 2005 02:26
Read Message Re: Is 5 valve better than 4 valve? Bill Sherwood Sun, 29 May 2005 08:14
Re: Is 5 valve better than 4 valve? SEXY 16 Sun, 29 May 2005 09:41
Re: Is 5 valve better than 4 valve? river Sun, 29 May 2005 11:53
Re: Is 5 valve better than 4 valve? 170bhp Sun, 29 May 2005 12:00
Read Message Re: Is 5 valve better than 4 valve? Bill Sherwood Sun, 29 May 2005 12:08
Re: Is 5 valve better than 4 valve? 170bhp Sun, 29 May 2005 12:11
Re: Is 5 valve better than 4 valve? Mr Revhead Sun, 29 May 2005 12:34
Re: Is 5 valve better than 4 valve? oldcorollas Sun, 29 May 2005 13:35
Read Message Re: Is 5 valve better than 4 valve? ROLLA GTi Sun, 29 May 2005 13:45
Re: Is 5 valve better than 4 valve? Jonny2TG Sun, 29 May 2005 14:15
Re: Is 5 valve better than 4 valve? Bill Sherwood Sun, 29 May 2005 14:58
Re: Is 5 valve better than 4 valve? THE WITZL Mon, 30 May 2005 02:34
Read Message Re: Is 5 valve better than 4 valve? funkdoc Mon, 30 May 2005 11:02
Re: Is 5 valve better than 4 valve? 4agte Mon, 06 June 2005 08:18
Re: Is 5 valve better than 4 valve? floody Mon, 06 June 2005 09:57
Re: Is 5 valve better than 4 valve? 4agte Mon, 06 June 2005 10:10
Read Message Re: Is 5 valve better than 4 valve? floody Tue, 07 June 2005 04:13
Re: Is 5 valve better than 4 valve? 170bhp Mon, 30 May 2005 09:14
Re: Is 5 valve better than 4 valve? 170bhp Mon, 30 May 2005 09:18
Re: Is 5 valve better than 4 valve? Bill Sherwood Tue, 31 May 2005 10:36
Read Message Re: Is 5 valve better than 4 valve? Jonny2TG Mon, 30 May 2005 15:37
Re: Is 5 valve better than 4 valve? Johnny Mon, 30 May 2005 15:55
Re: Is 5 valve better than 4 valve? justcallmefrank Tue, 31 May 2005 02:07
Re: Is 5 valve better than 4 valve? takai Tue, 31 May 2005 00:26
Read Message Re: Is 5 valve better than 4 valve? Ben Wilson Tue, 31 May 2005 01:02
Re: Is 5 valve better than 4 valve? takai Tue, 31 May 2005 01:04
Re: Is 5 valve better than 4 valve? THE WITZL Tue, 31 May 2005 07:41
Re: Is 5 valve better than 4 valve? Jonny2TG Tue, 31 May 2005 08:23
Read Message Re: Is 5 valve better than 4 valve? 170bhp Tue, 31 May 2005 11:40
Re: Is 5 valve better than 4 valve? Bill Sherwood Tue, 31 May 2005 11:56
Re: Is 5 valve better than 4 valve? Merudo Tue, 31 May 2005 11:57
Re: Is 5 valve better than 4 valve? xolent Tue, 31 May 2005 12:17
Read Message Re: Is 5 valve better than 4 valve? 170bhp Tue, 31 May 2005 12:25
Re: Is 5 valve better than 4 valve? Bill Sherwood Tue, 31 May 2005 12:43
Re: Is 5 valve better than 4 valve? 170bhp Tue, 31 May 2005 12:34
Re: Is 5 valve better than 4 valve? Bill Sherwood Tue, 31 May 2005 12:57
Read Message Re: Is 5 valve better than 4 valve? takai Tue, 31 May 2005 13:13
Re: Is 5 valve better than 4 valve? funkdoc Wed, 01 June 2005 12:41
Re: Is 5 valve better than 4 valve? Bill Sherwood Wed, 01 June 2005 14:04
Re: Is 5 valve better than 4 valve? emmac Wed, 01 June 2005 14:45
Read Message Re: Is 5 valve better than 4 valve? rx-3 ip Sat, 04 June 2005 06:26
Re: Is 5 valve better than 4 valve? 170bhp Sun, 05 June 2005 13:15
Re: Is 5 valve better than 4 valve? Bill Sherwood Sun, 05 June 2005 13:47
Re: Is 5 valve better than 4 valve? Kr0n1k Sun, 05 June 2005 17:34
Read Message Re: Is 5 valve better than 4 valve? 170bhp Sun, 05 June 2005 22:28
Re: Is 5 valve better than 4 valve? EMP-2TG Sun, 05 June 2005 23:50
Re: Is 5 valve better than 4 valve? off-road Sun, 05 June 2005 23:34
Re: Is 5 valve better than 4 valve? Bill Sherwood Sun, 05 June 2005 23:40
Read Message Re: Is 5 valve better than 4 valve? jkvsnn Tue, 07 June 2005 03:19
Re: Is 5 valve better than 4 valve? Bill Sherwood Tue, 07 June 2005 03:34
Re: Is 5 valve better than 4 valve? Bill Sherwood Sun, 05 June 2005 23:44
Re: Is 5 valve better than 4 valve? SEXY 16 Mon, 06 June 2005 01:00
Read Message Re: Is 5 valve better than 4 valve? oldcorollas Mon, 06 June 2005 02:01
Re: Is 5 valve better than 4 valve? off-road Mon, 06 June 2005 02:40
Re: Is 5 valve better than 4 valve? Bill Sherwood Mon, 06 June 2005 04:02
Re: Is 5 valve better than 4 valve? oldcorollas Mon, 06 June 2005 07:04
Read Message Re: Is 5 valve better than 4 valve? *rivmasta* Mon, 06 June 2005 07:29
Re: Is 5 valve better than 4 valve? *rivmasta* Mon, 06 June 2005 07:32
Re: Is 5 valve better than 4 valve? Bill Sherwood Mon, 06 June 2005 08:14
Re: Is 5 valve better than 4 valve? takai Mon, 06 June 2005 09:06
Read Message Re: Is 5 valve better than 4 valve? 4agte Mon, 06 June 2005 09:11
Re: Is 5 valve better than 4 valve? takai Mon, 06 June 2005 11:38
Re: Is 5 valve better than 4 valve? Bobski Mon, 06 June 2005 16:41
Re: Is 5 valve better than 4 valve? Blown86 Mon, 06 June 2005 23:30
Read Message Re: Is 5 valve better than 4 valve? Corona RT142 Mon, 06 June 2005 23:31
Re: Is 5 valve better than 4 valve? adamaw11 Tue, 07 June 2005 01:26
Re: Is 5 valve better than 4 valve? Bill Sherwood Tue, 07 June 2005 02:54
Re: Is 5 valve better than 4 valve? shinybluesteel Tue, 07 June 2005 03:03
Read Message Re: Is 5 valve better than 4 valve? lumpy Tue, 07 June 2005 05:52
Re: Is 5 valve better than 4 valve? oldcorollas Fri, 10 June 2005 01:50
Re: Is 5 valve better than 4 valve? TheStitt Wed, 08 June 2005 06:24
Re: Is 5 valve better than 4 valve? 510rob Thu, 09 June 2005 19:48
Read Message Re: Is 5 valve better than 4 valve? takai Fri, 10 June 2005 04:23
Re: Is 5 valve better than 4 valve? oldcorollas Fri, 10 June 2005 04:57
Re: Is 5 valve better than 4 valve? Mr Revhead Fri, 10 June 2005 05:49
Re: Is 5 valve better than 4 valve? oldcorollas Fri, 10 June 2005 06:21
Read Message Re: Is 5 valve better than 4 valve? Mr Revhead Fri, 10 June 2005 07:02
Re: Is 5 valve better than 4 valve? oldcorollas Fri, 10 June 2005 07:24

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