Return-Path: Received: from [128.83.126.136] (HELO mail.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.1b8) with ESMTP-TLS id 2434505 for flyrotary@lancaironline.net; Wed, 18 Jun 2003 13:25:38 -0400 Received: (qmail 50583 invoked from network); 18 Jun 2003 17:25:37 -0000 Received: from dhcp-191-101.per.utexas.edu (HELO benefits3.mail.utexas.edu) (146.6.191.101) by wb2.mail.utexas.edu with SMTP; 18 Jun 2003 17:25:37 -0000 Message-Id: <5.1.1.5.2.20030618121548.046e5e60@localhost> X-Sender: msteitle@mail.utexas.edu@localhost X-Mailer: QUALCOMM Windows Eudora Version 5.1.1 Date: Wed, 18 Jun 2003 12:25:29 -0500 To: "Rotary motors in aircraft" From: Mark Steitle Subject: Re: [FlyRotary] Re: Fuel Pump Plumbing In-Reply-To: Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="=====================_19977187==.ALT" --=====================_19977187==.ALT Content-Type: text/plain; charset="us-ascii"; format=flowed At 09:51 AM 6/18/2003 -0700, you wrote: > > >I got adapter fittings from Earl s for Tracy s pumps and plumbed them in >parallel. They don t allow backflow, so you don t need check valves. I >takes a lot of fittings by the time you go from one line from the tank, >split to two pumps, back together, put in the filter, and the pressure >sender block. > > > >I d just suggest being a little selective on the filter. Downstream from >the pumps I think you d want less then 50 microns, rated at more than >double your max expected flow to allow for some blockage; and I think in >the long run, one that has a cleanable element. > > > >K&N made some nice filters that they have discontinued. Same for >Edelbrock. I ordered filters three times before I actually got one, and >ended up paying over $100. There are stock filters that have AN fittings; >you might have to search or find someone at a parts store that knows >something. After I bought mine I came across one, but now I don t >remember what is was for; maybe Porsche or Mercedes. > > > >Mine is Peterson 600 series, and I bought it from Motorsports Supply in >Colorado; about $105. Probably more filter than needed, but hey, it s for >my airplane. > > > >Al Al, Thanks for the filter and fuel system info. Yes, I realize the large number of fittings that will be necessary to get the fuel system functional. That's why I am trying my best to get it right the first time around. I like the GM efi fuel filter because of its robust construction (welded stainless steel), application (big American V-8's) and availability (Auto-Zone, Pep-Boys, Wal-Mart, etc). If I plug one up in Flat Rock, TX, I want to be able to get a replacement at the nearest Wal-Mart. The GM filter is less than $10/ea, so I plan on changing the old ones out at every annual. The only problem was the Saginaw fittings, which has now been resolved. Mark S. --=====================_19977187==.ALT Content-Type: text/html; charset="us-ascii" At 09:51 AM 6/18/2003 -0700, you wrote:

I got adapter fittings from Earl s for Tracy s pumps and plumbed them in parallel. They don t allow backflow, so you don t need check valves. I takes a lot of fittings by the time you go from one line from the tank, split to two pumps, back together, put in the filter, and the pressure sender block.

I d just suggest being a little selective on the filter. Downstream from the pumps I think you d want less then 50 microns, rated at more than double your max expected flow to allow for some blockage; and I think in the long run, one that has a cleanable element.

K&N made some nice filters that they have discontinued. Same for Edelbrock. I ordered filters three times before I actually got one, and ended up paying over $100. There are stock filters that have AN fittings; you might have to search or find someone at a parts store that knows something. After I bought mine I came across one, but now I don t remember what is was for; maybe Porsche or Mercedes.

Mine is Peterson 600 series, and I bought it from Motorsports Supply in Colorado; about $105. Probably more filter than needed, but hey, it s for my airplane.

Al

Al,

Thanks for the filter and fuel system info. Yes, I realize the large number of fittings that will be necessary to get the fuel system functional. That's why I am trying my best to get it right the first time around. I like the GM efi fuel filter because of its robust construction (welded stainless steel), application (big American V-8's) and availability (Auto-Zone, Pep-Boys, Wal-Mart, etc). If I plug one up in Flat Rock, TX, I want to be able to get a replacement at the nearest Wal-Mart. The GM filter is less than $10/ea, so I plan on changing the old ones out at every annual. The only problem was the Saginaw fittings, which has now been resolved.

Mark S.

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