X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.227.161.51] (HELO qnsi-xch.qnsi.net) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 617886 for flyrotary@lancaironline.net; Thu, 28 Jul 2005 13:40:16 -0400 Received-SPF: none receiver=logan.com; client-ip=24.227.161.51; envelope-from=bhughes@qnsi.net Content-class: urn:content-classes:message Return-Receipt-To: "Bobby J. Hughes" MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C5939B.FE0A9ED0" Subject: RE: [FlyRotary] fuel filter question Disposition-Notification-To: "Bobby J. Hughes" X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Date: Thu, 28 Jul 2005 12:44:23 -0500 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] fuel filter question thread-index: AcWTlE1RNhhs/x/NTCecgFqi5q56XgABqxWQ From: "Bobby J. Hughes" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C5939B.FE0A9ED0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Kevin, =20 I have know idea why EFI filters cannot be used on the low pressure side as long as they do not restrict flow. Hopefully someone will chime in with the facts. I am planning on using EFI filters before my pumps also. They are the same ones that Ed and others are running on the high pressure side. They have a large 16mm in and out. AC Delco GF652. I believe the Egg subi's are also running these filters on the low pressure side. =20 Bobby ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of kevin lane Sent: Thursday, July 28, 2005 11:44 AM To: Rotary motors in aircraft Subject: [FlyRotary] fuel filter question I suspect that my engine problems stem from a design flaw, rather than a blockage. I normally never run my engine full power, full rich, but have been while breaking in the new rings. even leaning the engine a few notches prevents my problem, so it never arose in the past. my auto fuel filters are on the "suck" side, between the tanks and the selector valve. they are small, glass see-thru mesh filters. I realize now that all the fuel passes thru a pair of like 1/8" holes from a common 1/4" passage. I also see that the facet pump, despite pumping 15+ gals / hr with no head pressure, will only produce 1.75 lbs pressure when attached to the carb and bypassing the manual pump. my question - I was told not to use a fuel injection filter on a low pressure system like mine. I would like to keep the filters where they are rather than moving them to the engine compartment, since they filter stuff ahead of my flow meter and pumps. I like how they fit along the wing spar below my knees. I had problems with the replaceable filters shedding fibers into the carb, which is why I changed to the mesh filters. does anyone know what I should be using? I plan to do more testing this weekend if my wife will let me drive her car("no, I'm not feeling sleepy :-)" to get to the airport. Kevin Lane Portland, OR e-mail-> n3773@comcast.net =20 ------_=_NextPart_001_01C5939B.FE0A9ED0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Kevin,

I have know idea why EFI filters cannot be used = on the low=20 pressure side as long as they do not restrict flow. Hopefully someone = will chime=20 in with the facts. I am planning on using EFI filters before my pumps = also. They=20 are the same ones that Ed and others are running on the high pressure = side. They=20 have a large 16mm in and out. AC Delco GF652. I believe the Egg subi's = are also=20 running these filters on the low pressure side.

Bobby

From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of kevin=20 lane
Sent: Thursday, July 28, 2005 11:44 AM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] fuel filter=20 question

I suspect that my engine = problems stem=20 from a design flaw, rather than a blockage. I normally never run = my engine=20 full power, full rich, but have been while breaking in the new = rings. even=20 leaning the engine a few notches prevents my problem, so it never arose = in the=20 past. my auto fuel filters are on the "suck" side, between the = tanks and=20 the selector valve. they are small, glass see-thru mesh = filters. I=20 realize now that all the fuel passes thru a pair of like 1/8" holes from = a=20 common 1/4" passage. I also see that the facet pump, despite = pumping 15+=20 gals / hr with no head pressure, will only produce 1.75 lbs pressure = when=20 attached to the carb and bypassing the manual pump.

my = question - I was=20 told not to use a fuel injection filter on a low pressure system like=20 mine. I would like to keep the filters where they are rather than = moving=20 them to the engine compartment, since they filter stuff ahead of my flow = meter=20 and pumps. I like how they fit along the wing spar below my = knees. I=20 had problems with the replaceable filters shedding fibers into the carb, = which=20 is why I changed to the mesh filters. does anyone know what = I should=20 be using?

I plan to = do more=20 testing this weekend if my wife will let me drive her car("no, I'm not = feeling=20 sleepy :-)" to get to the airport.

Kevin Lane Portland, OR
e-mail-> n3773@comcast.net

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