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2011-2014 Mustangs
Exhaust
Long tube headers, which Primary size is 'best'?
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<blockquote data-quote="assasinator" data-source="post: 15455025" data-attributes="member: 105188"><p><a href="http://www.onallcylinders.com/2015/10/30/header-theory-part-1-looking-at-the-science-behind-exhaust-header-tuning/" target="_blank">http://www.onallcylinders.com/2015/10/30/header-theory-part-1-looking-at-the-science-behind-exhaust-header-tuning/</a></p><p></p><p></p><p>Inertial scavenging of gases begins as soon as the exhaust valve opens. Here, exhaust gases move past the valve and exit through the exhaust port into the header primary tube (and eventually working their way into the atmosphere). Hooker says the best power is produced with an exhaust gas speed of approximately 300 feet per second </p><p></p><p>This sonic wave is moving quickly—much quicker than the ever-expanding exhaust wave we discussed above. When the sonic wave arrives at the end of the primary tube, a negative shock wave is generated, and this wave travels backward toward the exhaust port (because it is reflected).</p><p></p><p>i have been making headers off and on for 30 years more or less. this is old tech. lost it seems on today's bunch.</p></blockquote><p></p>
[QUOTE="assasinator, post: 15455025, member: 105188"] [url]http://www.onallcylinders.com/2015/10/30/header-theory-part-1-looking-at-the-science-behind-exhaust-header-tuning/[/url] Inertial scavenging of gases begins as soon as the exhaust valve opens. Here, exhaust gases move past the valve and exit through the exhaust port into the header primary tube (and eventually working their way into the atmosphere). Hooker says the best power is produced with an exhaust gas speed of approximately 300 feet per second This sonic wave is moving quickly—much quicker than the ever-expanding exhaust wave we discussed above. When the sonic wave arrives at the end of the primary tube, a negative shock wave is generated, and this wave travels backward toward the exhaust port (because it is reflected). i have been making headers off and on for 30 years more or less. this is old tech. lost it seems on today's bunch. [/QUOTE]
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Exhaust
Long tube headers, which Primary size is 'best'?
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