X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from EXHUB003-3.exch003intermedia.net ([207.5.74.110] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTPS id 3678350 for flyrotary@lancaironline.net; Wed, 10 Jun 2009 14:51:09 -0400 Received-SPF: none receiver=logan.com; client-ip=207.5.74.110; envelope-from=jwhaley@datacast.com Received: from EXVMBX003-5.exch003intermedia.net ([207.5.74.45]) by EXHUB003-3.exch003intermedia.net ([207.5.74.110]) with mapi; Wed, 10 Jun 2009 11:49:03 -0700 From: Jeff Whaley To: Rotary motors in aircraft Date: Wed, 10 Jun 2009 11:50:30 -0700 Subject: RE: [FlyRotary] Injectors quandary. Thread-Topic: [FlyRotary] Injectors quandary. Thread-Index: Acnp+xr2CcabVByYTAmVFaxabm38WgAAPUkQ Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Hey Chris, what does Mistral have to say? They designed the intake; they must have a recommended injector. That's where I'd start ... hopefully they can help. Jeff -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Beh= alf Of Christopher Barber Sent: Wednesday, June 10, 2009 2:38 PM To: Rotary motors in aircraft 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=20 back and ordered 4 Mazda injectors. It was at this time I discovered=20 that the stock Mazda injectors do NOT fit the Mistral intake. My former=20 build helper originally found the injectors I have been using. The are=20 seriously mismatched at about 550 cfm and 1600 cfm. I know the EC2 can=20 compensate (perhaps with some difficulty due to the extreme difference),=20 but I am wanting to replace them all with about 550ish injectors. =20 Perhaps it will help some of my leaning issues, perhaps not.. I am having a couple of issues. First, getting the right PHYSICAL=20 size. While the ones I am using in the Mistral Intake look a great deal=20 like the Mazda injectors, they are different in physical dimensions. =20 The ones I have come back with a Chrysler (Deko) and Ford Part numbers,=20 but seem to be very old part numbers have been difficult to find online=20 (my local auto shop and speed shop has been no help...I seem to know=20 more than they do about the topic even though they did try to help). =20 Are there "standard" known physical types with some kind of verbiage=20 that will allow me to get the proper fit? Or do I use my calipers, go=20 for the couple of sets I have found with dimensional drawings, order=20 them and hope for the proper fit? I just do not know the "standards"=20 used and I yet been unable to find the answer online....gee, I may have=20 to resort to live persons in an auto electrical shop . Some of the=20 injectors seems short and stubby and some long and skinny...some,=20 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=20 hey, it is part of the learning. SECOND. Since I am ordering new injectors anyway, I am curious about=20 the impedance. The current ones are low impedance. Thus, I am using=20 the resistors in series with each injector. I know the EC2 does not=20 seem to mind this at all, however, since I am replacing them, is it wise=20 to remove this minor failure point (the connections to the resistors=20 etc) and buy high impedance injectors and remove the resistors? Does=20 one have a significant advantage over the other? Seems if you can=20 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