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oldcorollas
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Kita-Ku, Sapporo, Japan
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January 2003
 
Re: extractors Mon, 20 December 2004 05:43 Go to previous messageGo to previous message
my take on all this is that 4-2-1 will give you better scavengine in mid to high rpm... and 4-1 is for top end.. for me that means if you have a power band _starting_ around 6000rpm, you would only want 4-1. but if you have a power band starting around 4-6000rpm, you would want 4-2-1..

4-1 and 4-2-1 also have different length primaries, so there is more to it than just one or the other, as you can tune 4-1 to work with lower rpm.... thing is, when you have a reflected wave travelling up 4 pipes, it will not be as strong as travelling up two pipes Wink

Cya, Stewart
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SubjectPosterDate
Read Message   extractors Meat_rackSun, 19 December 2004 12:35
Read Message   Re: extractors st184 sillycarSun, 19 December 2004 22:30
Read Message   Re: extractors jesseT18Sun, 19 December 2004 23:35
Read Message   Re: extractors st184 sillycarMon, 20 December 2004 01:02
Read Message   Re: extractors CrUZsidaMon, 20 December 2004 03:52
Read Message   Re: extractors db__Mon, 20 December 2004 04:53
Read Message   Re: extractors CrUZsidaMon, 20 December 2004 04:56
Read Message   Re: extractors  oldcorollasMon, 20 December 2004 05:43
Read Message   Re: extractors st184 sillycarMon, 20 December 2004 10:17
Read Message   Re: extractors riceburna73Tue, 21 December 2004 03:22
Read Message   Re: extractors st184 sillycarTue, 21 December 2004 07:21
Read Message   Re: extractors cheese_crackaTue, 21 December 2004 10:46
Read Message   Re: extractors CrUZsidaTue, 21 December 2004 11:57
Read Message   Re: extractors cheese_crackaTue, 21 December 2004 12:01
Read Message   Re: extractors Meat_rackTue, 21 December 2004 12:06
Read Message   Re: extractors CrUZsidaTue, 21 December 2004 12:32
Read Message   Re: extractors cheese_crackaTue, 21 December 2004 13:16
Read Message   Re: extractors oldcorollasTue, 21 December 2004 13:22
Read Message   Re: extractors Meat_rackTue, 21 December 2004 13:23
Read Message   Re: extractors Meat_rackTue, 21 December 2004 13:29
Read Message   Re: extractors oldcorollasWed, 22 December 2004 10:33
Read Message   Re: extractors HennWed, 22 December 2004 06:10
Read Message   Re: extractors st184 sillycarWed, 22 December 2004 07:08
Read Message   Re: extractors White RabbitTue, 28 December 2004 06:28
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