Return-Path: Received: from cic-omail3.wachovia.com ([169.200.164.164] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2990431 for flyrotary@lancaironline.net; Fri, 13 Feb 2004 08:03:40 -0500 Received: from clt-dmz-cic-cache1.io.firstunion.com (cic-cache01.io.firstunion.com [169.200.25.90]) by cic-omail3.wachovia.com (8.11.6+Sun/8.9.0) with ESMTP id i1DD3T915983 for ; Fri, 13 Feb 2004 08:03:29 -0500 (EST) Received: from yahoo.com (S4DEV00018.cic.nc.fub.com [172.1.95.240]) by clt-dmz-cic-cache1.io.firstunion.com (8.10.1/8.9.0) with ESMTP id i1DD3Tu01446 for ; Fri, 13 Feb 2004 08:03:29 -0500 (EST) Message-ID: <402CCB1C.5090504@yahoo.com> Date: Fri, 13 Feb 2004 08:03:24 -0500 From: Scott Stout Reply-To: squiggles@yahoo.com Organization: The Stout's Zenith 801 User-Agent: Mozilla Thunderbird 0.5 (Windows/20040207) X-Accept-Language: en-us, en MIME-Version: 1.0 To: flyrotary@lancaironline.net Subject: RE: [FlyRotary] Re: EFI Fuel Pressure Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit OK...Before I run too far off topic, what is the pressure on the fuel rail? From the responses to the original post it seems safe to assume even if I return to the bottom of the 29 gallon( 2 14.5 gallon tanks ) tanks the pressure generated by the fuel pump will easily overcome this resistance. Now venturing down the pressure path...I am confused...How can the weight/volume of the fuel above the measuring point be ignored? So, I have a 1 gallon 12 inch square bucket filled with 1 gallon of fuel, it weighs 6 pounds today. If I raise this bucket 25 inches above the ground, attach a 25" vertical tube to the bottom of the bucket and measure the pressure I will have 1 psi of pressure? Now I change the amount of fuel I want to have 25 inches off the ground to 2 gallons. However, I also change the square bucket to be big enough to hold the 2 gallons so that the fuel level is the same as the original 1 gallon bucket. Thus, the height of the fuel in the bucket is the same whether it is 1 gallon or 2 gallons. Does the pressure at the bottom of the 25 inch tube measure something other than 1psi? 2psi? 1.5psi? Yep...Definitely time for that 2nd cup of coffee... Thanx for the help... -Scott