Re: [T3] Fuel Pump Adjustment

[Greg and Jenn Irick <gregandjenn@charter.net>]

<x-flowed> >I'm a little dubious about gravity pushing more fuel through the pump
>action, but I spoze it's remotely possible.
>Steven Ayres, Prescott AZ
>'66 KG1600

The only thing you would gain is what is called Net Positive Suction Head 
(NPSH) which just means that you have more pressure at the suction of a 
pump.  This is only critical in a centrifugal pump or a piston type 
positive displacement pump but it might help a little by keeping any gases 
(such as nitrogen or oxygen or even fuel vapor) in solution and not forming 
into bubbles which would cause you to run lean.  Now if you are running FI 
then the more gas you have in the tank the better it is for the pump.

Greg Irick
Silverdale, WA
gregi@vwtype3.org

'65 Notchback with a Britax sliding rag top


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