X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.12.137.6] (HELO imo-m25.mail.aol.com) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3678451 for flyrotary@lancaironline.net; Wed, 10 Jun 2009 16:23:47 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.6; envelope-from=WRJJRS@aol.com Received: from imo-da04.mx.aol.com (imo-da04.mx.aol.com [205.188.169.202]) by imo-m25.mail.aol.com (v107.10) with ESMTP id RELAYIN1-24a3016503a3; Wed, 10 Jun 2009 16:23:44 -0400 Received: from WRJJRS@aol.com by imo-da04.mx.aol.com (mail_out_v40_r1.5.) id q.d15.4a6222bd (34994) for ; Wed, 10 Jun 2009 16:22:41 -0400 (EDT) Received: from smtprly-mb01.mx.aol.com (smtprly-mb01.mx.aol.com [64.12.207.148]) by cia-db01.mx.aol.com (v124.15) with ESMTP id MAILCIADB017-5c5c4a30160c3ba; Wed, 10 Jun 2009 16:22:41 -0400 Received: from webmail-mf15 (webmail-mf15.webmail.aol.com [64.12.88.228]) by smtprly-mb01.mx.aol.com (v124.15) with ESMTP id MAILSMTPRLYMB012-5c5c4a30160c3ba; Wed, 10 Jun 2009 16:22:36 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Injectors quandary. Date: Wed, 10 Jun 2009 16:22:36 -0400 X-AOL-IP: 205.188.169.202 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: wrjjrs@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CBB8205402E2C9_CE8_889_webmail-mf15.sysops.aol.com" X-Mailer: AOL Webmail 42952-STANDARD Received: from 66.253.96.221 by webmail-mf15.sysops.aol.com (64.12.88.228) with HTTP (WebMailUI); Wed, 10 Jun 2009 16:22:36 -0400 Message-Id: <8CBB820533CFE4F-CE8-413@webmail-mf15.sysops.aol.com> X-Spam-Flag:NO ----------MB_8CBB8205402E2C9_CE8_889_webmail-mf15.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii" Chris, Try calling RC Engineering. They do all kinds of injector cleaning sizing. Kind of like Gami but for cars and motorcycles. They can prrobably advise you on the injectors to use for the size holes you have. Phone is (310) 320 2277, and they are located in Torrance CA. Bill Jepson -----Original Message----- From: Christopher Barber To: Rotary motors in aircraft Sent: Wed, 10 Jun 2009 11:37 am Subject: [FlyRotary] Injectors quandary. The list is WAY too quiet. So, I thought I would pose this concern/question.? ? I am wanting to get new/rebuilt injectors. I tried to get some a while back and ordered 4 Mazda injectors. It was at this time I discovered that the stock Mazda injectors do NOT fit the Mistral intake. My former build helper originally found the injectors I have been using. The are seriously mismatched at about 550 cfm and 1600 cfm. I know the EC2 can compensate (perhaps with some difficulty due to the extreme difference), but I am wanting to replace them all with about 550ish injectors. Perhaps it will help some of my leaning issues, perhaps not..? ? I am having a couple of issues. First, getting the right PHYSICAL size. While the ones I am using in the Mistral Intake look a great deal like the Mazda injectors, they are different in physical dimensions. The ones I have come back with a Chrysler (Deko) and Ford Part numbers, but seem to be very old part numbers have been difficult to find online (my local auto shop and speed shop has been no help...I seem to know more than they do about the topic even though they did try to help). Are there "standard" known physical types with some kind of verbiage that will allow me to get the proper fit? Or do I use my calipers, go for the couple of sets I have found with dimensional drawings, order them and hope for the proper fit? I just do not know the "standards" used and I yet been unable to find the answer online....gee, I may have to resort to live persons in an auto electrical shop . Some of the injectors seems short and stubby and some long and skinny...some, indistinguishable to the untrained eye, like the different ones I have now.? ? I know, due to my ignorance, I may be making this harder than it is, but hey, it is part of the learning.? ? SECOND. Since I am ordering new injectors anyway, I am curious about the impedance. The current ones are low impedance. Thus, I am using the resistors in series with each injector. I know the EC2 does not seem to mind this at all, however, since I am replacing them, is it wise to remove this minor failure point (the connections to the resistors etc) and buy high impedance injectors and remove the resistors? Does one have a significant advantage over the other? Seems if you can reduce the parts count (heh, like in the rotary), it may be better.? ? Thanks guys. Hope this helps pick up list activity a bit too.? ? All the best,? ? Chris? Houston? ? --? Homepage: http://www.flyrotary.com/? Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html? ----------MB_8CBB8205402E2C9_CE8_889_webmail-mf15.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/html; charset="us-ascii" Chris,
Try calling RC Engineering. They do all kinds of injector cleaning sizing. Kind of like Gami but for cars and motorcycles. They can prrobably advise you on the injectors to use for the size holes you have. Phone is (310) 320 2277, and they are located in Torrance CA.
Bill Jepson


-----Original Message-----
From: Christopher Barber <CBarber@TexasAttorney.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, 10 Jun 2009 11:37 am
Subject: [FlyRotary] Injectors quandary.

The list is WAY too quiet. So, I thought I would pose this concern/question. 
 
I am wanting to get new/rebuilt injectors. I tried to get some a while back and ordered 4 Mazda injectors. It was at this time I discovered that the stock Mazda injectors do NOT fit the Mistral intake. My former build helper originally found the injectors I have been using. The are seriously mismatched at about 550 cfm and 1600 cfm. I know the EC2 can compensate (perhaps with some difficulty due to the extreme difference), but I am wanting to replace them all with about 550ish injectors. Perhaps it will help some of my leaning issues, perhaps not.. 
 
I am having a couple of issues. First, getting the right PHYSICAL size. While the ones I am using in the Mistral Intake look a great deal like the Mazda injectors, they are different in physical dimensions. The ones I have come back with a Chrysler (Deko) and Ford Part numbers, but seem to be very old part numbers have been difficult to find online (my local auto shop and speed shop has been no help...I seem to know more than they do about the topic even though they did try to help). Are there "standard" known physical types with some kind of verbiage that will allow me to get the proper fit? Or do I use my calipers, go for the couple of sets I have found with dimensional drawings, order them and hope for the proper fit? I just do not know the "standards" used and I yet been unable to find the answer online....gee, I may have to resort to live persons in an auto electrical shop <g>. Some of the injectors seems short and stubby and some long and skinny...some, indistinguishable to the untrained eye, like the different ones I have now. 
 
I know, due to my ignorance, I may be making this harder than it is, but hey, it is part of the learning. 
 
SECOND. Since I am ordering new injectors anyway, I am curious about the impedance. The current ones are low impedance. Thus, I am using the resistors in series with each injector. I know the EC2 does not seem to mind this at all, however, since I am replacing them, is it wise to remove this minor failure point (the connections to the resistors etc) and buy high impedance injectors and remove the resistors? Does one have a significant advantage over the other? Seems if you can reduce the parts count (heh, like in the rotary), it may be better. 
 
Thanks guys. Hope this helps pick up list activity a bit too. 
 
All the best, 
 
Chris 
Houston 
 
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