X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 06 Dec 2007 14:40:30 -0500 Message-ID: X-Original-Return-Path: Received: from [65.13.226.109] (HELO lucky.dts.local) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2557123 for lml@lancaironline.net; Wed, 05 Dec 2007 07:04:52 -0500 Received-SPF: none receiver=logan.com; client-ip=65.13.226.109; envelope-from=cjensen@dts9000.com Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C83736.CF86AF72" X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Subject: RE: [LML] GAMI Injectors? X-Original-Date: Wed, 5 Dec 2007 07:03:12 -0500 X-Original-Message-ID: <8984A39879F2F5418251CBEEC9C689B3AFC1EC@lucky.dts.local> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] GAMI Injectors? thread-index: Acg2zKrLQlfIKwMeSOiCXwTylVpinAAaI2RQ From: "Chuck Jensen" X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01C83736.CF86AF72 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Erik, =20 First, it should be understood that the EGT you see means NOTHING. EGTs = can vary 10s or 100s of degrees based on sensor position. All you = should be interested in is whether #6 peaks at close to the same fuel = flow as the other cylinders. You do not care what the peak temp = is....just that it occurs at close to the same fuel flow of the other = cylinders. If your cylinders don't peak within 0.2-0.4 gph of each = other, then you may benefit from balancing your injectors for smoother = and more efficient operations at lean of peak (LOP). =20 GAMI somewhat (re)invented the balanced injector business and has done a = lot of innovative work in the engine arena. With that said, my personal = preference is Airflow Performance in Greenville, SC. Instead of = replacing the entire injector, AFP installs an injector body in the = injector port and then it is very simple to disconnect the fuel line and = remove the injector needle to be replaced with the new. Very quick and = I like the idea of not unscrewing and screwing anything into the engine = ports multiple times. In general, AFP is 30%-40% less expensive for the = same results. With that said, GAMI does an excellent job and its good = to see them rewarded for the ground breaking efforts they have = undertaken which benefits everyone, whether we are their direct customer = or not. =20 =20 I would suggest that you go to the GAMI website and download the form = for running a lean test. That will tell you if your injectors are out = of balance---that being your fuel flow to achieve peak EGT across all = the cylinders varies more than a few tenths GPH. You can also do the = same thing on the back of an envelope or kneeboard. Just progressly = lean the engine and note at what GPH each EGT starts to drop. That will = tell you the "spread" as well. If you are out of balance, you'll be = surprised at the efficiency and smoothness that balancing can bring. Is = there a dollar payback...maybe, but the sense of satisfaction is = priceless. Chuck Jensen=20 -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net]On Behalf Of = asw20747@aol.com Sent: Tuesday, December 04, 2007 6:24 PM To: lml@lancaironline.net Subject: [LML] GAMI Injectors? Just wondering if anyone as any experience....Pro/Con with the GAMI = injector system. I am running a Performance IO-550 in a Legacy.=20 Have noticed that the #6 cylinder is consistently running about 100 = degrees hotter (leaner) EGT. If not the GAMI injectors, is there any = other way to bring the EGT's more in line, thus allowing more effective = leaning possibilities? =20 Also, do the GAMI injectors tend to hold their setting or is it a = constant process to keep them in line? Thanks, Erik Larson _____ =20 More new features than ever. Check out the new AOL Mail = ! ------_=_NextPart_001_01C83736.CF86AF72 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Erik,
 
First,=20 it should be understood that the EGT you see means NOTHING.  EGTs = can vary=20 10s or 100s of degrees based on sensor position.  All you should be = interested in is whether #6 peaks at close to the same fuel flow as the = other=20 cylinders.  You do not care what the peak temp is....just that=20 it occurs at close to the same fuel flow of the other = cylinders.  If=20 your cylinders don't peak within 0.2-0.4 gph of each other, then you may = benefit=20 from balancing your injectors for smoother and more efficient = operations=20 at lean of peak (LOP).
 
GAMI somewhat (re)invented the balanced injector business = and has=20 done a lot of innovative work in the engine arena.  With = that=20 said, my personal preference is Airflow Performance in Greenville, = SC. =20 Instead of replacing the entire injector, AFP installs an injector body = in the=20 injector port and then it is very simple to disconnect the fuel line and = remove=20 the injector needle to be replaced with the new.  Very quick and I = like the=20 idea of not unscrewing and screwing anything into the engine ports = multiple=20 times.  In general, AFP is 30%-40% less expensive for the same=20 results.  With that said, GAMI does an excellent job and its good = to see=20 them rewarded for the ground breaking efforts they have undertaken which = benefits everyone, whether we are their direct customer or not. =20
 
I=20 would suggest that you go to the GAMI website and download the form for = running=20 a lean test.  That will tell you if your injectors are out of=20 balance---that being your fuel flow to achieve peak EGT across all = the=20 cylinders varies more than a few tenths GPH.  You can also do the = same=20 thing on the back of an envelope or kneeboard.  Just = progressly lean=20 the engine and note at what GPH each EGT starts to drop.  That = will=20 tell you the "spread" as well.  If you are out of balance, you'll = be=20 surprised at the efficiency and smoothness that balancing can = bring.  Is=20 there a dollar payback...maybe, but the sense of satisfaction is=20 priceless.

Chuck Jensen
-----Original Message-----
From: Lancair Mailing = List=20 [mailto:lml@lancaironline.net]On Behalf Of=20 asw20747@aol.com
Sent: Tuesday, December 04, 2007 6:24=20 PM
To: lml@lancaironline.net
Subject: [LML] GAMI=20 Injectors?



Just wondering if anyone = as any=20 experience....Pro/Con with the GAMI injector system.  I am = running a=20 Performance IO-550 in a Legacy.

Have noticed that the #6 = cylinder is=20 consistently running about 100 degrees hotter (leaner) EGT.  If = not the=20 GAMI injectors, is there any other way to bring the EGT's more in = line, thus=20 allowing more effective leaning possibilities? 

Also, do = the GAMI=20 injectors tend to hold their setting or is it a constant process to = keep them=20 in line?

Thanks,

Erik Larson
More new features than ever. Check out the new AOL Mail!
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