<VV> Fuel Pressure WAS looking to buy a spare fuel pump

[Ken Pepke]

The stock Corvair fuel pump has a pressure regulator 'built in' in the form of the diaphragm return spring.  The pump flows fuel and when the supply exceeds the demand the resulting pressure compresses the spring and lifts the push rod off the cam follower.  That reduces or stops the pumping action until the demand calls for more fuel. 

The question becomes does anyone offer 'softer' or 'harder' springs to tailor the pump more closely to the demand?

Ken P
Wyandotte, MI
Worry looks around; Sorry looks back, Faith looks up.

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> From: Mark Durham <62vair at gmail.com>
> Date: March 29, 2012 10:57:37 PM EDT
> To: Frank DuVal <corvairduval at cox.net>, "virtualvairs at corvair.org" <virtualvairs at corvair.org>
> Subject: Re: <VV> looking to buy a spare fuel pump
> 
>> snip <<

> I bought a Airtex from my local flaps, and like the Ad Frank supplied,
> it was updated for modern fuels and the diaphram material looked
> perfect even though it was 2 years old at the time, and works too well,
> I had to add the spectre pressure regulator to keep from overpowering
> the needle and seats. its almost 4 years old.
> Mark Durham