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Fuel pressure at VP44 inlet?

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Old 10-13-2011, 12:36 AM
  #16  
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Originally Posted by vineyardmh
Look to "streamline" your fuel system. Get rid of banjo bolts. Use Vulcan Performance's kit that has a fuel pressure port right where it connects to the VP44 - connect a grease gun hose (12") - then a "T" at the end - install a pressure sensor for your Fuel Pressure Gauge on one side, and install a 5 psi switch that will close if pressure drops down to 5 - 7 psig.

Note that many trucks might still have the aluminum block where the original lift pump was mounted, and that piece should be removed and the fuel line connected directly to the fuel filter (without using one of those suck banjo bolts!!)
If your fuel pressure ever gets to 5-7 psi then you can bet that you will, or will have, done damage to the VP. Dont use an idiot light unless you can have it come on at no less than 10-12 psi.
Old 10-13-2011, 05:46 PM
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Originally Posted by KATOOM
If your fuel pressure ever gets to 5-7 psi then you can bet that you will, or will have, done damage to the VP. Dont use an idiot light unless you can have it come on at no less than 10-12 psi.
Actually - it isn't that sensitive ....5-7 psi for BRIEF periods WILL NOT cause damage to the VP44. A red light (idiot light) that comes on around 5 - 7 (or 6 - 8) is low enough to "grab your attention" yet not have spurious alarms routinely to the point of being ignored. And an idiot light has the advantage of getting your attention because few people carefully monitor the Fuel Pressure Gauge at all times!
Old 10-13-2011, 07:03 PM
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Originally Posted by vineyardmh
Actually - it isn't that sensitive ....5-7 psi for BRIEF periods WILL NOT cause damage to the VP44. A red light (idiot light) that comes on around 5 - 7 (or 6 - 8) is low enough to "grab your attention" yet not have spurious alarms routinely to the point of being ignored. And an idiot light has the advantage of getting your attention because few people carefully monitor the Fuel Pressure Gauge at all times!
Well I definitely dont agree so there's no way I could tell someone that knowing all well in good what the VP really needs and how much it can cost to replace a VP. I'm not saying you're wrong in your opinion or that I know more than you either. But that's the great thing about these forums is we're all entitled to our opinion.
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