X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nm33-vm3.bullet.mail.bf1.yahoo.com ([72.30.239.203] verified) by logan.com (CommuniGate Pro SMTP 6.0.5) with ESMTPS id 6284469 for flyrotary@lancaironline.net; Wed, 22 May 2013 10:26:43 -0400 Received-SPF: none receiver=logan.com; client-ip=72.30.239.203; envelope-from=echristley@att.net Received: from [98.139.212.144] by nm33.bullet.mail.bf1.yahoo.com with NNFMP; 22 May 2013 14:26:07 -0000 Received: from [98.139.213.12] by tm1.bullet.mail.bf1.yahoo.com with NNFMP; 22 May 2013 14:26:07 -0000 Received: from [127.0.0.1] by smtp112.mail.bf1.yahoo.com with NNFMP; 22 May 2013 14:26:07 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1369232767; bh=+kpK9IaJUx2kvQ/Rrhsnd7rJzWytnerzKDUu5NaPHgg=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:X-Rocket-Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer; b=LG4UIy39g8MmcrRlnqGTGn/E+ZmEQIalLc1zU/Y0KcjWpRNq5qvEkS1CMo5RNwyRhOGO2hIKgePdm7yqbTzyKUfWLyYDkuNEcR2yWvwNJOeyXRJl6JljzbTN0KVBGWHx5BFN8BzGKcTEYknIAhJfkciFUDdR629Ft6ZFApqzdAU= X-Yahoo-Newman-Id: 223708.81443.bm@smtp112.mail.bf1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: 4NsfOiwVM1nDzdSKbqurBKYMhSRS13knuvNjCLSwbcnXt_w pB0.ec15qFaTPOOv02lxKJgS_QxnjIOREwCWIwNjn2wF8r.0yHCnV8Sb0OZX UFAbXLeiKFSKYrrtWJwK_16_ZFmxA7ZmDCHN_d0_wQ5MiItOu._g6u9hBrYd rc_qvxfisbTBQG3gk2wJqhySsZAUVPjSBqyOhYQ9tyVFIkZtcYFBZ8BKpPxo 6VfMavnCtKJrhmB_x2XD49EN7NkRE_H9si4G4N1oR6e5aWOsXgqRXd0j8a3K tq.PCvFL4SReRUxcOq2Xrrfpp8lO6KJPpKPnOIlevmHWhfYldogiqqyuVoQH Q81U7YISZ2UtYLnic1t6_3l5Aucun7YOb6zZyx7u894cr_4KzOt0YvtfCPsW ScDDlXcp29OPKfZsTKVQ9zTLxGICBp1Lqbagg4DMnyUDAFjDKik0opM6Jc_Q QEl7Q1ULGRUOWDVUffV8aJHUycook.tu.LFz6hEiADWAKXlnoiaoC6GOzMOu XZGz.6OfCOBeAmXUgsQsdgE680FisBmF8qzQvlKDklZszzOX3gl2KDErapa4 smlr4emqrCRFvCbGwLib6gOCh9U27XFYm64h7nl6lVccCSjhmHW0f0GfFU0L VBC_4Cunc_CpyB3QmaAxOahk0KPZgPfz73sfd X-Yahoo-SMTP: 40RP3pGswBDvPav1a.I8eMv.KS8bdgWBnCloVoKaow-- X-Rocket-Received: from [10.63.221.139] (echristley@216.240.30.5 with ) by smtp112.mail.bf1.yahoo.com with SMTP; 22 May 2013 07:26:06 -0700 PDT From: Ernest Christley Mime-Version: 1.0 (Apple Message framework v1283) Content-Type: multipart/alternative; boundary="Apple-Mail=_E7CC7651-D736-437D-B8C2-4DF963D9F230" Subject: Re: [FlyRotary] Re: combo fuel pressure regulator/filter option? Date: Wed, 22 May 2013 10:26:05 -0400 In-Reply-To: To: "Rotary motors in aircraft" References: Message-Id: X-Mailer: Apple Mail (2.1283) --Apple-Mail=_E7CC7651-D736-437D-B8C2-4DF963D9F230 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 On May 22, 2013, at 10:18 AM, Charlie England wrote: > Good point. I wonder how the Corvette ECU handles it, & whether = Tracy's ECU can be tuned to compensate. >=20 > Charlie It's a tuning point. If the pressure is higher, you simply program the = ECU to open for less time at idle. To get a really smooth idle, I had = to program the MegaSquirt to only use one set of injectors below 2,000 = RPM. I use the injectors mounted in the block at idle. Above 2000, the = computer progressively brings the second set of injectors online so that = there is a smooth transition from one set to both. >=20 > On 05/21/2013 11:11 PM, Bill Bradburry wrote: >> Charlie, >> You may want your pressure regulator to follow your manifold = pressure. This would be especially useful at idle if you were set at 58 = lbs. Injectors are flow rated at about 43.5 lbs, so at 58 they would = put out more fuel than they were rated for, which could make getting = your idle set correctly a problem. Or maybe not?? >> =20 >> Bill B >> =20 >> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Charlie England >> Sent: Tuesday, May 21, 2013 8:18 PM >> To: Rotary motors in aircraft >> Subject: [FlyRotary] combo fuel pressure regulator/filter option? >> =20 >> Anyone seen one of these? >> = http://www.gmpartsdirect.com/results.cfm?addtocart=3D1&addpartnumber=3D192= 39926&singlepart=3D1&partnumber=3D19239926 >> (Other sites have pics; this was just the lowest price I saw with a = quick search.) >>=20 >> I just saw it in a car magazine about an LS motor installation. = Apparently, the pressure is set at ~58 lbs, but that's the approximate = set point for RX-8 cars, right? I've already set up my dual fuel pumps, = dual GM filters as used by Ed A, and an aftermarket 'hot rod' adjustable = regulator, but this device looks attractive. The weight savings (& money = savings) seem to make it an attractive option.The only downside that's = immediately comes to mind is whether the entire assembly must be = replaced to change the filter. >>=20 >> Charlie >=20 --Apple-Mail=_E7CC7651-D736-437D-B8C2-4DF963D9F230 Content-Transfer-Encoding: 7bit Content-Type: text/html; charset=iso-8859-1
On May 22, 2013, at 10:18 AM, Charlie England wrote:

Good point. I wonder how the Corvette ECU handles it, & whether Tracy's ECU can be tuned to compensate.

Charlie

It's a tuning point.  If the pressure is higher, you simply program the ECU to open for less time at idle.  To get a really smooth idle, I had to program the MegaSquirt to only use one set of injectors below 2,000 RPM.  I use the injectors mounted in the block at idle.  Above 2000, the computer progressively brings the second set of injectors online so that there is a smooth transition from one set to both.




On 05/21/2013 11:11 PM, Bill Bradburry wrote:

Charlie,

You may want your pressure regulator to follow your manifold pressure.  This would be especially useful at idle if you were set at 58 lbs.  Injectors are flow rated at about 43.5 lbs, so at 58 they would put out more fuel than they were rated for, which could make getting your idle set correctly a problem.   Or maybe not??

 

Bill B

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Charlie England
Sent: Tuesday, May 21, 2013 8:18 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] combo fuel pressure regulator/filter option?

 

Anyone seen one of these?
http://www.gmpartsdirect.com/results.cfm?addtocart=1&addpartnumber=19239926&singlepart=1&partnumber=19239926
(Other sites have pics; this was just the lowest price I saw with a quick search.)

I just saw it in a car magazine about an LS motor installation. Apparently, the pressure is set at ~58 lbs, but that's the approximate set point for RX-8 cars, right? I've already set up my dual fuel pumps, dual GM filters as used by Ed A, and an aftermarket 'hot rod' adjustable regulator, but this device looks attractive. The weight savings (& money savings) seem to make it an attractive option.The only downside that's immediately comes to mind is whether the entire assembly must be replaced to change the filter.

Charlie



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