Dual pumps of different size question.
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From: Ft. Myers, FL
Dual pumps of different size question. Hopefully not too dumb of a question...Can I run a 450 and a 255 pump? It will be plumbed with -8AN to a regulator before the rails. Planning on using the stock feed line as the return. Sound OK?
Thanks,
Thanks,
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From: Central Cal.
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From: Norn Iron
But there is no reason why he could not use those pumps, or equally dozens of other configurations. Why choose such a large disparity between pump sizes ?....who knows though.
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I agree with you. But why use 2 pumps, when there are large enough pumps to let one get the job done, regardless of fuel demand?
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From: Norn Iron
Because a lot of the very large pumps are either very expensive, or ***** and never perform as well as their claims.
How many very large single in-tank pumps do you know of that you'd trust ?
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From: Central Cal.
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From: Ft. Myers, FL
Ok, to clarify. I currently have a 255 in the car and a 450 on the bench. I need to upgrade for the 393" to be run on E85. I mean I could just buy another 450 but, as many of you know I'm "frugal", and then what to do with a perfectly good 255. Thanks for the input.
Another reason people choose to use two small pumps over one large pump is heat. You can run a small pump when demand is low and have the other turn on only when needed and it doesn't heat up the fuel as much.
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From: Norn Iron
Yet almost all of the people complaining about heat...have never logged fuel pressure, so really have no clue what temperatures they are seeing...hot or cold. Which seems a little baffling as the pumps themselves impart very little heat to the fuel.
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From: Norn Iron
Either or, it doesnt really matter. FPR can be run in either position, although most do prefer after the rails.
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From: Ft. Myers, FL
The -8an line will feed the rails from the tank. Why would the stock feed line (3/8") not be sufficient for return?