X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 50 [XX] (67%) BODY: contains "rx" (33%) BODY: contains stock spam words Return-Path: Received: from imf21aec.mail.bellsouth.net ([205.152.59.69] verified) by logan.com (CommuniGate Pro SMTP 5.1.5) with ESMTP id 1781676 for flyrotary@lancaironline.net; Sun, 21 Jan 2007 18:30:30 -0500 Received-SPF: none receiver=logan.com; client-ip=205.152.59.69; envelope-from=rusty@radrotary.com Received: from ibm63aec.bellsouth.net ([65.6.194.9]) by imf21aec.mail.bellsouth.net with ESMTP id <20070121232925.WBCJ1784.imf21aec.mail.bellsouth.net@ibm63aec.bellsouth.net> for ; Sun, 21 Jan 2007 18:29:25 -0500 Received: from rd ([65.6.194.9]) by ibm63aec.bellsouth.net with ESMTP id <20070121232919.URXE8565.ibm63aec.bellsouth.net@rd> for ; Sun, 21 Jan 2007 18:29:19 -0500 From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] fuel injectors Date: Sun, 21 Jan 2007 17:29:12 -0600 Message-ID: <02de01c73db3$f92bb520$6e01a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_02DF_01C73D81.AE914520" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Importance: Normal Thread-Index: Acc9sJqPpwcOhPgBS5SdAQWP+Z2wcQAASgdg In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_02DF_01C73D81.AE914520 Content-Type: multipart/alternative; boundary="----=_NextPart_001_02E0_01C73D81.AE914520" ------=_NextPart_001_02E0_01C73D81.AE914520 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable I had Bruce T. send me some rebuilt fuel injectors and the no. on them = is 1955002010, all four are alike. I have been reading here that there is = a difference between the primary and the secondary. Will these work for = both, if not which ones do I have, primary or secondary? There some options = other than the Mazda, correct. JohnD=20 =20 Hi John, =20 Attached is a chart that I stole from somewhere, showing the numbers for some of the stock injectors. As you can see, you have 89-91 non turbo injectors. They are high impedance, so they will work directly with an EC-2, without having to add resistors. They are "rated" at 460 cc/min = of flow, though I believe that's at Mazda's lower than standard fuel = pressure. =20 The stock injectors are the only ones I know of that will fit the stock housings, or manifold, but I suspect that are others out there somewhere that will fit. If you're using an aftermarket throttle body with = injector ports, then you'd need to use what's made for those. It's sometimes possible to adapt other injectors to fit the stock Mazda ports, but it's much easier to just use the ones you have. =20 =20 As for matching injectors, Mazda used 4 identical injectors up until 93, when they made the secondary larger than the primary. This was to = supply lots of fuel for the twin turbo engine (zoom, zoom...directly to jail). = =20 =20 Cheers, Rusty (hoping to sneak past the spamcatcher) ------=_NextPart_001_02E0_01C73D81.AE914520 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
I had Bruce T. send me some = rebuilt fuel=20 injectors and the no. on them is 1955002010, all four are alike.  I = have=20 been reading here that there is a difference between the primary and the = secondary.  Will these work for both, if not which ones do I have, = primary=20 or secondary?  There some options other than the Mazda, = correct. =20 JohnD 
 
Hi John,
 
Attached is a chart that I stole = from somewhere,=20 showing the numbers for some of the stock injectors.  As you can = see, you=20 have 89-91 non turbo injectors.   They are high impedance, so = they=20 will work directly with an EC-2, without having to add resistors. =20 They are "rated" at 460 cc/min of flow, though = I believe=20 that's at Mazda's lower than standard fuel pressure.  =20
 
The stock injectors are the only ones I know = of that=20 will fit the stock housings, or manifold, but I suspect that are others = out=20 there somewhere that will fit.  If you're using an=20 aftermarket throttle body with injector ports, then you'd need to = use=20 what's made for those.  It's sometimes possible to adapt other = injectors to=20 fit the stock Mazda ports, but it's much easier to just use = the ones=20 you have.  
 
As for matching injectors, Mazda used 4 = identical=20 injectors up until 93, when they made the secondary larger than the=20 primary.  This was to supply lots of fuel for the twin turbo=20 engine (zoom, zoom...directly to=20 jail).   
 
Cheers,
Rusty (hoping to sneak past the=20 spamcatcher)
------=_NextPart_001_02E0_01C73D81.AE914520-- ------=_NextPart_000_02DF_01C73D81.AE914520 Content-Type: text/plain; name="stock injector size.txt" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="stock injector size.txt" Mazda RX-7(Gen 1 and 2) Fuel injector identification guide Year | type | impedance | plug style | plug notch position | flow rating = | color | part number ------------------------------------------------------------------------ 84-85 | 13B NT | low | square | center | 680cc | orange | 195500-0900 86-87 | 13B NT | low | square | center | 460cc | red | 195500-1350 86-87 | 13B T | low | square | center | 550cc | tan | 195500-1370 88 | 13B NT | high | square | offset | 460cc | purple | 195500-1350 88 | 13b T | high | square | offset | 550cc | purple | 195500-1370 89-91 | 13B NT | high | oval | center | 460cc | red | 195500-2010 89-91 | 13B T | high | oval | center | 550cc | purple | 195500-2020 ------=_NextPart_000_02DF_01C73D81.AE914520--