Acceptable voltage drop at fuel pump?
08-24-2009, 07:10 AM
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Acceptable voltage drop at fuel pump? As the title says. I know the general rule for 12v circuits is .5v DC total drop but I would like to know how much drop I can have to still maintain 58psi at all times. I have a in tank walbro 255 w/ corvette filter/regulator and have about 420rwhp. Supposedly that pump is rated for 650 crank hp and beings that I am not really near that figure yet, would it be ok to have more voltage drop?
08-27-2009, 03:24 PM
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Here's a link to some info...
http://www.motorsportsdigest.com/tech/perform4.htm
http://www.motorsportsdigest.com/tech/perform4.htm
08-27-2009, 04:57 PM
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x2 thanks for the link. If that chart is close I shouldn't be worried about voltage drop causing my fuel pressure drop at WOT, I have about .55 total voltage drop on my fuel pump circuit.
