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

[lonwall@corvairunderground.com]

Ken - Your first paragraph hits the nail on the head. All the folks who 
lately have suggested cutting coils out of their return spring are 
creating an all new superstition involving fuel pumps.

But why then your second paragraph?????

Lon wall
www.corvairunderground.com
MARCH SALES END SATURDAY



On 3/30/2012 5:50 AM, Ken Pepke wrote:
> 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?
>
>