X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from zixvpm1.fdic.gov ([167.176.6.41] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTPS id 5085491 for flyrotary@lancaironline.net; Mon, 08 Aug 2011 10:34:24 -0400 Received-SPF: pass receiver=logan.com; client-ip=167.176.6.41; envelope-from=brogers@fdic.gov Received: from zixvpm1.fdic.gov (ZixVPM [127.0.0.1]) by Outbound.fdic.gov (Proprietary) with ESMTP id 7402C940765 for ; Mon, 8 Aug 2011 10:33:49 -0400 (EDT) Received: from mail.fdic.gov (unknown [10.30.1.9]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by zixvpm1.fdic.gov (Proprietary) with ESMTP id E0084940741; Mon, 8 Aug 2011 10:33:48 -0400 (EDT) Received: from VASWEXC101P.PROD.FDIC.GOV (exchange1 [172.25.160.60]) by mail.fdic.gov (Sentrion-MTA-4.2.0/Sentrion-MTA-4.2.0) with ESMTP id p78EXmHh006492; Mon, 8 Aug 2011 10:33:48 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/related; type="multipart/alternative"; boundary="----_=_NextPart_001_01CC55D8.2E6584E6" Subject: Injector Mixing Plate Date: Mon, 8 Aug 2011 09:33:47 -0500 Message-ID: <1F44A251F397E444B05E240B8688AB790AAEA686@DALEXC100P.PROD.FDIC.GOV> In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Injector Mixing Plate Thread-Index: AcxTyEtdCyqrjk1TRFyq4fF+J5hlOQCDRMXw References: From: "Rogers, Bob J." To: "Rotary motors in aircraft" Cc: X-OriginalArrivalTime: 08 Aug 2011 14:33:47.0955 (UTC) FILETIME=[2F2B1030:01CC55D8] This is a multi-part message in MIME format. ------_=_NextPart_001_01CC55D8.2E6584E6 Content-Type: multipart/alternative; boundary="----_=_NextPart_002_01CC55D8.2E6584E6" ------_=_NextPart_002_01CC55D8.2E6584E6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I have a 1987 Mazda Turbo 13B engine in my Mustang II kit plane. The primary injectors in the center housing are stock Nippon Denso 550 cc peak and hold. Below each injector is a plastic insert called a "mixing plate", which presumably disperses the fuel coming out of the injectors before entering the combustion chamber. I am wondering if the obstruction in fuel flow caused by the grid on the mixing plate would make the engine run lean at higher engine speed, such as 5,000 to 6, 000 rpm. If I used a different injector, such as the RC 550 cc (which has a better spray pattern), can I eliminate the mixing plates? What happens if I keep the stock injectors and just remove the mixing plate? =20 I welcome comments from anyone on the list, but hopefully, racing Guru Lynn Hanover can shed some light on my questions. =20 Thanks, =20 Bob J. Rogers N62BT ------_=_NextPart_002_01CC55D8.2E6584E6 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I have a 1987 Mazda Turbo 13B = engine in my Mustang II kit plane. The = primary injectors in the center housing are stock Nippon Denso 550 cc peak and = hold. Below each injector is a = plastic insert called a “mixing plate”, which presumably disperses the fuel = coming out of the injectors before entering the combustion chamber. I am wondering if the = obstruction in fuel flow caused by the grid on the mixing plate would make the engine run = lean at higher engine speed, such as 5,000 to 6, 000 rpm. If I used a different injector, such as the RC 550 cc (which has = a better spray pattern), can I eliminate the mixing plates? What happens if I keep the = stock injectors and just remove the mixing plate?

I welcome comments from anyone on = the list, but hopefully, racing Guru Lynn Hanover can shed some light on my = questions.

Thanks,

Bob J. = Rogers

N62BT

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