Message

Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Fri, 21 Feb 2003 17:51:06 -0500 Message-ID: X-Original-Return-Path: <13brv3@mchsi.com> Received: from sccmmhc02.mchsi.com ([204.127.203.184] verified) by logan.com (CommuniGate Pro SMTP 4.0.6) with ESMTP id 2033347 for flyrotary@lancaironline.net; Fri, 21 Feb 2003 11:53:20 -0500 Received: from rad ([12.218.64.71]) by sccmmhc02.mchsi.com (InterMail vM.4.01.03.27 201-229-121-127-20010626) with ESMTP id <20030221165319.MRHJ5896.sccmmhc02.mchsi.com@rad> for ; Fri, 21 Feb 2003 16:53:19 +0000 Reply-To: <13brv3@mchsi.com> From: <13brv3@mchsi.com> X-Original-To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Injector Sizing X-Original-Date: Fri, 21 Feb 2003 10:54:09 -0600 X-Original-Message-ID: <001c01c2d9c9$dda22480$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01C2D997.9307B480" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_001D_01C2D997.9307B480 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable All along I have been going with the "stock" injectors (Denso = 195500-2010). These came with my junk yard engine. I had them cleaned and tested at = ~440 cc/min. =20 I'd been interested any anyone's comments on re-sizing and whether = different injectors will fit in the same fuel rails and dumb questions like = that...:-) =20 I'm glad you made a new thread out of this, because it saved me the = trouble :-) =20 =20 I'm also interested in the injector sizes that most folks are using, as = well as the max duty cycle you see at full throttle. In the 3rd gen RX-7 = world, the stock injectors are 550 primary, and 850 secondary, and these are = known to be good for up to about 320 flywheel HP at around 80% duty cycle. = If you want to play with the numbers, here's a neat link to a fuel = calculator: =20 http://www.maxcooper.com/rx7/how-to/fuel_system/calcs.html =20 In researching my current injector size (I bought 4 almost new injectors = a while back), I found the following identification info. This was on the RX-7 Club forum, so I can't guarantee it's accuracy. I have 4 of the = purple -2020's, but they won't work with the Atkins supplied throttle body. =20 =20 Is there a limit to what size, or type (high or low impedance) injectors = you can use with Tracy's ECU? I should really try to find my manual :-) =20 Rusty =20 =20 Mazda RX-7(Gen 1 and 2) Fuel injector identification guide =20 Year | type | impedance | plug style | plug notch position | flow rating = | color | part number ------------------------------------------------------------------------ =20 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 =20 =20 ------=_NextPart_000_001D_01C2D997.9307B480 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

All along I=20 have been going with the "stock" injectors (Denso = 195500-2010). These=20 came with my junk yard engine. I had them cleaned and tested at = ~440=20 cc/min.

I'd been=20 interested any anyone's comments on re-sizing and whether different = injectors=20 will fit in the same fuel rails and dumb questions like=20 that...:-)

I'm glad you made a new thread out of = this,=20 because it saved me the trouble = :-)

I'm also interested in the injector sizes = that most=20 folks are using, as well as the max duty cycle you see at full = throttle. =20 In the 3rd gen RX-7 world, the stock injectors are 550 primary, and 850=20 secondary, and these are known to be good for up to about 320 = flywheel=20 HP at around 80% duty cycle. If you want to play with = the=20 numbers, here's a neat link to a fuel = calculator:

http:= //www.maxcooper.com/rx7/how-to/fuel_system/calcs.html

In researching my current injector size (I = bought 4=20 almost new injectors a while back), I found the following identification = info. This was on the RX-7 Club forum, so I can't guarantee it's=20 accuracy. I have 4 of the purple -2020's, but they won't work with = the=20 Atkins supplied throttle body.

Is there a limit to what size, or type (high = or low=20 impedance) injectors you can use with Tracy's ECU? I should really = try to=20 find my manual :-)

Rusty

Mazda RX-7(Gen 1 and 2) Fuel injector = identification=20 guide

----------------------------------------------= --------------------------

84-85 | 13B NT | low | square | center | = 680cc | orange=20 | 195500-0900
86-87 | 13B NT | low | square | center | 460cc | red |=20 195500-1350
86-87 | 13B T | low | square | center | 550cc | tan |=20 195500-1370
88 | 13B NT | high | square | offset | 460cc | purple |=20 195500-1350
88 | 13b T | high | square | offset | 550cc | purple |=20 195500-1370
89-91 | 13B NT | high | oval | center | 460cc | red |=20 195500-2010
89-91 | 13B T | high | oval | center | 550cc | purple |=20 195500-2020

------=_NextPart_000_001D_01C2D997.9307B480--