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Power Strokes
7.3 Aftermarket
FFD Rail System
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[QUOTE="andharri, post: 1536542, member: 31258"] Oh no there's certainly a pressure drop. It's just less of pressure drop compared to a smaller diameter region, or design. And it's not really what I think just what the equations say it should be. Given the length of the system in question (relatively short) and the typical pressures that are witnessed (relatively high ~3000 psi) the difference in a few centimeters of radius change is honestly probably not going to make a huge difference. However, if you're talking about trends that should benefit performance it would seem this one is going in the opposite direction. And speaking of pressure drop, the drop will get bigger with less restriction on the outgoing oil (more volume flow Q), ie. larger injectors. The smaller the injector the less pressure drop because the flow (Q) is reduced. This is why when you place your thumb over the end of a garden hose, the exiting water pressure increases (because the pressure drop inside the hose decreases) and volume output decreases. [/QUOTE]
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