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Question on Dayton ultimax 8”
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<blockquote data-quote="TheRadio" data-source="post: 8822683" data-attributes="member: 686630"><p>Pay attention to the width to height ratio of the port. The further you deviate from a square shape, the less efficient the port becomes and it will begin to behave as if the tuning was higher than it actually is. The higher the surface area of the port, the more drag inhibits flow. Less surface area yeilds less drag and increases flow.</p><p></p><p>Make the port longer to compensate for this. It is generally viewed that you should not exceed a 1:9 ratio of width to height. Even at this maximum ratio, efficiency and performance will suffer compared to a square design.</p></blockquote><p></p>
[QUOTE="TheRadio, post: 8822683, member: 686630"] Pay attention to the width to height ratio of the port. The further you deviate from a square shape, the less efficient the port becomes and it will begin to behave as if the tuning was higher than it actually is. The higher the surface area of the port, the more drag inhibits flow. Less surface area yeilds less drag and increases flow. Make the port longer to compensate for this. It is generally viewed that you should not exceed a 1:9 ratio of width to height. Even at this maximum ratio, efficiency and performance will suffer compared to a square design. [/QUOTE]
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