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#21215 06/09/2004 1:49 AM | Joined: Jan 2004 Posts: 112 'Bolter | | 'Bolter Joined: Jan 2004 Posts: 112 | I'm setting up one of Langdon's Holley-Weber carbs and the recommended fuel pressure, I believe, is about 3.5#. What's the factory mechanical pump put out?
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#21216 06/09/2004 4:58 PM | Joined: Feb 2004 Posts: 29,886 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,886 | Generally, standard mechanical pumps put out 3 to 5 lbs. Webers are very sensitive to excessive pressure, lots of flooding problems, so you might need an adjustable pressure regulator. Check JEGS, or one of the hotrod mail-order distributors for a pressure regulator. I think Holley makes a good one that's adjustable. Fuel pressure/vacuum gauges are available at just about any parts store, and it's a necessary item in any tuner's tool box.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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#21217 06/09/2004 10:01 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | I measured the pressure output of my 261's fuel pump and it is 4 lbs and 2000 rpm.
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