Re: OT: Fuel Pump Pressure Question

Posted by glennster on December 14, 2006 at 09:24:55 from (68.78.73.38):

In Reply to: OT: Fuel Pump Pressure Question posted by Dave in GA on December 14, 2006 at 07:39:42:

hollley carbs can handle 4-6 psi fuel pressure, ovet that, the pressure will open the floats and flood the carburetor. pick up a fuel pressure regulator and set it at 5psi. the other problem with the older holleys is the o-rings and rubber is not resistant to the alcohol in the fuel. its eats up the seals, the new kits are a little more resistant. one other thing to look at is the power valves in the metering block plates. they look like a screw in bottle cap sized deal, with a rubber diaghram and spring inside. a back fire can damage the power valve pretty easy, and you have to replace the power valve.

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