X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 12 Dec 2007 10:05:02 -0500 Message-ID: X-Original-Return-Path: Received: from mta11.adelphia.net ([68.168.78.205] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2574549 for lml@lancaironline.net; Mon, 10 Dec 2007 10:46:30 -0500 Received-SPF: pass receiver=logan.com; client-ip=68.168.78.205; envelope-from=glcasey@adelphia.net Received: from [75.82.212.14] by mta11.adelphia.net (InterMail vM.6.01.05.02 201-2131-123-102-20050715) with ESMTP id <20071210154548.UOYZ4022.mta11.adelphia.net@[75.82.212.14]> for ; Mon, 10 Dec 2007 10:45:48 -0500 Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-59--48986647 X-Original-Message-Id: <55CFB6CA-2198-4F78-B432-A18E751DC93C@adelphia.net> From: Gary Casey Subject: Re: Re: GAMI Injectors? X-Original-Date: Mon, 10 Dec 2007 07:45:45 -0800 X-Original-To: Lancair Mailing List X-Mailer: Apple Mail (2.752.2) --Apple-Mail-59--48986647 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed > Actually, Grayhawk is right - as usual. The injector tubing should > be made from as small a tubing as practical to minimize the > volume. The volume of fuel from the distributor to the injector > can drain or boil out during a hot soak and cause the normal hot > start problem. Therefore, they can contribute to the pressure drop > downstream of the distributor and if they are not the same length > different cylinders, even with identical injectors, could flow > differently. The fix is to make them the same length. The reason > Grayhawk is correctly skeptical is that the effect is very small > and it is doubtful that they need to be exactly or even > approximately the same. If one customizes the individual injector > flow rates (GAMI for instance) the result will compensate for the > different lengths anyway. Incidentally, I have seen some injector > systems built with larger-than-normal tubing and I don't think that > is a good idea as it needlessly increases the volume of fuel in the > system. > > Gary Casey > > There are no dumb questions. ----------- There can be dumb answers > and this may be one. > > Why, oh why have you asked why? Who, oh who influenced me to do > that? That is the question. A fellow racer (who shall remain un- > named for privacy reasons) was convinced his engine ran better with > equal length injector lines. He "suggested" that I might find the > same result because of equalizing the effect of fluid drag in the > longer lines. I have not found any results that would indicate any > difference and, at the next annual (assuming I am not too lazy), I > may just switch back to the two shorter ones for cyls 1 & 3. This > will save at least .72 oz, thus allowing me to go faster. > > Notice that you are not any smarter after that "excuse." > > Grayhawk > Easily influenced by promises of more speed. --Apple-Mail-59--48986647 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1
Actually, Grayhawk is right - as usual. =A0The = injector tubing should be made from as small a tubing as practical to = minimize the volume. =A0The volume of fuel from the distributor to the = injector can drain or boil out during a hot soak and cause the normal = hot start problem. =A0Therefore, they can contribute to the pressure = drop downstream of the distributor and if they are not the same length = different cylinders, even with identical injectors, could flow = differently. =A0The fix is to make them the same length. =A0The reason = Grayhawk is correctly skeptical is that the effect is very small and it = is doubtful that they need to be exactly or even approximately the same. = =A0If one customizes the individual injector flow rates (GAMI for = instance) the result will compensate for the different lengths anyway. = =A0Incidentally, I have seen some injector systems built with = larger-than-normal tubing and I don't think that is a good idea as it = needlessly increases the volume of fuel in the system.

Gary Casey


=
There are no dumb questions. = ----------- There can be dumb answers and this may be one.
=
=A0
Why, oh why have you asked why?=A0 Who, oh who = influenced me to do that? That is the question.=A0 A fellow racer (who = shall remain un-named for privacy reasons)=A0was convinced his engine = ran better with equal length injector lines.=A0 He "suggested" that I = might find the same result because of equalizing the effect of=A0fluid = drag in the longer lines.=A0 I have not found any results that would = indicate any difference=A0and, at the next annual (assuming I am not too = lazy), I may just switch back to the two shorter ones for cyls 1 & = 3.=A0 This will save at least .72 oz, thus allowing me to go = faster.
=A0
Notice that you are not any smarter = after that "excuse."
=A0
Grayhawk
=
Easily influenced by promises of more = speed.

= --Apple-Mail-59--48986647--