X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [129.116.87.142] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 618182 for flyrotary@lancaironline.net; Thu, 28 Jul 2005 16:22:49 -0400 Received-SPF: none receiver=logan.com; client-ip=129.116.87.142; envelope-from=mark.steitle@austin.utexas.edu X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C593B2.05150F7A" Subject: RE: [FlyRotary] Re: fuel filter question Date: Thu, 28 Jul 2005 15:22:04 -0500 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E016C1C08@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: fuel filter question Thread-Index: AcWTsOJW0Q/iW6VxQ1a6yzBq8/V3HAAAO91g From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C593B2.05150F7A Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I guess I'll have to take your word on that one George. I haven't seen a Renault in Texas in quite a while. =20 =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Echo Lake Fishing Resort (Georges Boucher) Sent: Thursday, July 28, 2005 3:13 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: fuel filter question =20 Renault has the filter before the pump. Georges B.=20 =20 -------Original Message------- =20 From: Mark R Steitle =20 Date: 07/28/05 12:59:38 To: Rotary motors in aircraft =20 Subject: [FlyRotary] Re: fuel filter question =20 A little more searching and I found a schematic of a Peugeot on the Bosch web site. Both diagrams show the tank, then the pump, then the filter. Not that some others don't do it differently, but I haven't seen any. I think there is a good reason the designers put the filter downstream from the pump. As Tracy has pointed out before, efi pumps don't suck very well, they are designed to push fuel at high pressure. My system has coarse screen filters in the tank, and two efi filters downstream from the pumps. Caveat... I have done 9 hours of ground testing, but no flight test as yet. Mark S. =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark R Steitle Sent: Thursday, July 28, 2005 2:47 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: fuel filter question =20 Did a Google search on "VW Jetta fuel system". Here is a cut-n-paste from the very first hit. =20 1985 Volkswagen Jetta NHTSA Recall ID Number: 87V053000 Recall Date: APR 14, 1987=20 Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP=20 Potential Units Affected: 278520=20 Summary: FUEL PUMP, LOCATED INSIDE FUEL TANK, COULD SEIZE DURING HIGH AMBIENT TEMPERATURES BECAUSE OF AN EXTREME FINE MESH FUEL FILTER RESTRICTING THE FUEL FLOW.=20 Consequence: FUEL SUPPLY TO ENGINE WOULD BE PARTIALLY INTERRUPTED,RESULTING IN STALLING.=20 Remedy: INSTALL A MODIFIED FUEL PUMP AND FILTER.=20 Notes: VOLKSWAGEN OF AMERICA,INC,=20 =20 =20 Mark S. =20 =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of jesse farr Sent: Thursday, July 28, 2005 2:42 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: fuel filter question =20 Isn't the reason for that most efi cars have pump in tank so would be kind of hard to do ? jofarr, soddy tn ----- Original Message ----- From: Mark R Steitle =20 ,=20 As I recall, putting the filter between the tank and pump was true for the pre EFI cars, which were prone to vapor locking. But I can't think of any of the newer EFI cars that put the filter before the pump (excluding screen filters). Can you provide any examples? =20 =20 =20 =20 =20 ------_=_NextPart_001_01C593B2.05150F7A Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I guess I’ll have to take = your word on that one George.  I haven’t seen a Renault in Texas in = quite a while. 

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Echo Lake Fishing = Resort (Georges Boucher)
Sent: Thursday, July 28, = 2005 3:13 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = fuel filter question

 

Renault has the filter before the pump.

Georges = B. 

 

-------Ori= ginal Message-------

 

Date: 07/28/05 = 12:59:38

Subject: = [FlyRotary] Re: fuel filter question

 

A little more searching and I = found a schematic of a Peugeot on the Bosch web site.  Both diagrams show = the tank, then the pump, then the filter.  Not that some others = don’t do it differently, but I haven’t seen any.  I think there = is a good reason the designers put the filter downstream from the = pump.  As Tracy has pointed out before, efi pumps don’t suck very well, they are designed to push fuel at high pressure.  My system has coarse = screen filters in the tank, and two efi filters downstream from the = pumps.  Caveat… I have done 9 hours of ground testing, but no flight = test as yet.

Mark = S.

 =

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark R Steitle
Sent: Thursday, July = 28, 2005 2:47 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] = Re: fuel filter question

 

=

Did a Google search on “VW = Jetta fuel system”.  Here is a cut-n-paste from the very first hit. 

1985 Volkswagen Jetta NHTSA = Recall ID Number: 87V053000

Recall = Date: APR 14, 1987
Component: FUEL = SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Potential Units = Affected: 278520
Summary: = FUEL PUMP, LOCATED INSIDE FUEL TANK, COULD SEIZE = DURING HIGH AMBIENT TEMPERATURES BECAUSE OF AN EXTREME FINE MESH FUEL = FILTER RESTRICTING THE FUEL FLOW.
Consequence: FUEL = SUPPLY TO ENGINE WOULD BE PARTIALLY INTERRUPTED,RESULTING IN = STALLING.
Remedy: INSTALL A = MODIFIED FUEL PUMP AND FILTER.
Notes: VOLKSWAGEN OF AMERICA,INC,

 

=

 

=

Mark S.  =

 =

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of jesse farr
Sent: Thursday, July = 28, 2005 2:42 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] = Re: fuel filter question

 

=

Isn't = the reason for that most efi cars have pump in tank so would be kind of hard to = do ?

jofarr, soddy = tn

----- = Original Message ----- From: Mark R Steitle =

,

As I recall, putting the filter = between the tank and pump was true for the pre EFI cars, which were prone to = vapor locking.  But I can’t think of any of the newer EFI cars = that put the filter before the pump (excluding screen filters).  Can you = provide any examples?

 

 

 

 

 

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