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SVTPerformance's Chain of Restaurants
The Distillery
Time for e85.. Have a few questions
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<blockquote data-quote="Bad Company" data-source="post: 13940449" data-attributes="member: 141815"><p>I've never played with these engines in this manner. I've played with diesel engines with a return style fuel system and the small fuel return lines with high flow fuel systems cause problems when the return isn't sized to equal or larger than the pressure supply line. Actually most of those systems we run a #6 pressure supply line with a #8 return. If I build a real high flow system it will be #8 pressure supply after the secondary high pressure pump with #8 return with a primary/auxiliary electric 260GPH transfer low pressure pump at the engine to feed the secondary high pressure pump on the engine with it own separate #8 return line. High flow for these engines is roughly around 220GPH at 120 to 135 psi. So these engines will have two # 8 return lines back to the tank. One from the engine and one from the primary/auxiliary pump. The primary pump output pressure is 17 psi to the secondary with its own pressure regulator for the return side of it. The high pressure regulator is after the fuel rail and is a gravity feed with no restriction to the tank. A standard flow system is roughly 90GPH at 90-95 psi</p><p></p><p>I'm taking what I've learned from building 2500Hp diesel engine fuel systems and using that knowledge to explain the possible problems that can occur with these fuel systems. Also the link to the article I posted basically says the same thing I'm trying to say. The writer is from L & M Engines who is a top Mod engine builder in the country</p><p></p><p>These cars are dealing with much lower fuel pressure, so the lines size needs to increase to maintain the volume at lower pressures</p></blockquote><p></p>
[QUOTE="Bad Company, post: 13940449, member: 141815"] I've never played with these engines in this manner. I've played with diesel engines with a return style fuel system and the small fuel return lines with high flow fuel systems cause problems when the return isn't sized to equal or larger than the pressure supply line. Actually most of those systems we run a #6 pressure supply line with a #8 return. If I build a real high flow system it will be #8 pressure supply after the secondary high pressure pump with #8 return with a primary/auxiliary electric 260GPH transfer low pressure pump at the engine to feed the secondary high pressure pump on the engine with it own separate #8 return line. High flow for these engines is roughly around 220GPH at 120 to 135 psi. So these engines will have two # 8 return lines back to the tank. One from the engine and one from the primary/auxiliary pump. The primary pump output pressure is 17 psi to the secondary with its own pressure regulator for the return side of it. The high pressure regulator is after the fuel rail and is a gravity feed with no restriction to the tank. A standard flow system is roughly 90GPH at 90-95 psi I'm taking what I've learned from building 2500Hp diesel engine fuel systems and using that knowledge to explain the possible problems that can occur with these fuel systems. Also the link to the article I posted basically says the same thing I'm trying to say. The writer is from L & M Engines who is a top Mod engine builder in the country These cars are dealing with much lower fuel pressure, so the lines size needs to increase to maintain the volume at lower pressures [/QUOTE]
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SVTPerformance's Chain of Restaurants
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Time for e85.. Have a few questions
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