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SN95 Cobras
Fuel pump questions
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<blockquote data-quote="mwolson" data-source="post: 15230437" data-attributes="member: 16006"><p>That's actually a hard question to answer with any real proof. I actually looked into the issue regarding stock fuel rails a few years ago. It turns out that as long as the fuel has laminar flow (no turbulence), everything is fine. But once turbulence starts, the flow doesn't increase as much with increasing pressure, and the fuel really starts heating up. The cross section area of your fuel line is the key parameter. The calculations required to determine at what flow level the flow becomes turbulent are very complex, so I gave up.</p><p></p><p>But guys have run well over 500 HP with stock fuel lines and rails, so I think you will be fine. That said, larger lines and rails would not hurt. I probably would just run the stock lines and rails.</p></blockquote><p></p>
[QUOTE="mwolson, post: 15230437, member: 16006"] That's actually a hard question to answer with any real proof. I actually looked into the issue regarding stock fuel rails a few years ago. It turns out that as long as the fuel has laminar flow (no turbulence), everything is fine. But once turbulence starts, the flow doesn't increase as much with increasing pressure, and the fuel really starts heating up. The cross section area of your fuel line is the key parameter. The calculations required to determine at what flow level the flow becomes turbulent are very complex, so I gave up. But guys have run well over 500 HP with stock fuel lines and rails, so I think you will be fine. That said, larger lines and rails would not hurt. I probably would just run the stock lines and rails. [/QUOTE]
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