X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m16.mx.aol.com ([64.12.138.206] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 890002 for flyrotary@lancaironline.net; Tue, 20 Dec 2005 13:13:36 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.206; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-m16.mx.aol.com (mail_out_v38_r6.3.) id q.bf.66b24e0a (16112) for ; Tue, 20 Dec 2005 13:12:48 -0500 (EST) Received: from MBLK-M08 (mblk-m08.mblk.aol.com [64.12.136.41]) by air-id12.mx.aol.com (v108.32) with ESMTP id MAILINID124-3ef043a849a02f0; Tue, 20 Dec 2005 13:12:48 -0500 Date: Tue, 20 Dec 2005 13:12:48 -0500 Message-Id: <8C7D3A81E09AB07-1824-10750@MBLK-M08.sysops.aol.com> From: wrjjrs@aol.com References: Received: from 66.127.99.234 by MBLK-M08.sysops.aol.com (64.12.136.41) with HTTP (WebMailUI); Tue, 20 Dec 2005 13:12:48 -0500 X-MB-Message-Source: WebUI X-MB-Message-Type: User In-Reply-To: X-Mailer: AOL WebMail 15106 Subject: Re: [FlyRotary] Re: Fuel filter selection Content-Type: multipart/alternative; boundary="--------MailBlocks_8C7D3A81E09AB07_1824_F7DE_MBLK-M08.sysops.aol.com" MIME-Version: 1.0 To: flyrotary@lancaironline.net X-AOL-IP: 64.12.136.41 X-Spam-Flag: NO ----------MailBlocks_8C7D3A81E09AB07_1824_F7DE_MBLK-M08.sysops.aol.com Content-Type: text/plain; charset="us-ascii" Buly, Lots of diesel manufacturers use a low pressure pump before the filter. Often called a "lift" pump. Then the big diesel fuel filter then the high pressure pump. If you use a boost pump in tank or before the high pressure pumps put the filter between them is OK. Bill Jepson -----Original Message----- From: Buly To: Rotary motors in aircraft Sent: Tue, 20 Dec 2005 10:24:26 -0500 Subject: [FlyRotary] Re: Fuel filter selection Guys, I don't understand why you are installing filters AFTER the pumps? I sell large SEPAR diesel fuel filters and I always recommend all the filtering to be done before the pumps and out of the tanks. Any water or debris if it's allowed to reach the pumps, will be beaten into smaller particles and may be PUSHED thru the filter, or even will damage the pumps. I personally suffered on my boat by frequent engine stopages in the worst of times, only to discover that the manufacturer have installed a screen on the pick up tube inside of the tank, where can not be seen or cleaned. The same manufacturer had to fix or replace number of engines only because he installed the fuel pumps BEFORE the filter. Any water in the fuel was beaten in to fine emulsion and pushed thru the filter into the injectors. Results were rusted injectors, rusted high pressure pumps and more. Buly ----------MailBlocks_8C7D3A81E09AB07_1824_F7DE_MBLK-M08.sysops.aol.com Content-Type: text/html; charset="us-ascii"

Buly,

Lots of diesel manufacturers use a low pressure pump before the filter. Often called a "lift" pump. Then the big diesel fuel filter then the high pressure pump. If you use a boost pump in tank or before the high pressure pumps put the filter between them is OK.

Bill Jepson

-----Original Message-----
From: Buly <atlasyts@bellsouth.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tue, 20 Dec 2005 10:24:26 -0500
Subject: [FlyRotary] Re: Fuel filter selection

Guys, I don't understand why you are installing filters AFTER the pumps? I sell large SEPAR diesel fuel filters and I always recommend all the filtering to be done before the pumps and out of the tanks.
Any water or debris if it's allowed to reach the pumps, will be beaten into smaller particles and may be PUSHED thru the filter, or even will damage the pumps.
I personally suffered on my boat by frequent engine stopages in the worst of times, only to discover that the manufacturer have installed a screen on the pick up tube inside of the tank, where can not be seen or cleaned.
The same manufacturer had to fix or replace number of engines only because he installed the fuel pumps BEFORE the filter. Any water in the fuel was beaten in to fine emulsion and pushed thru the filter into the injectors. Results were rusted injectors, rusted high pressure pumps and more.
Buly

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