X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 28 May 2008 20:55:32 -0400 Message-ID: X-Original-Return-Path: Received: from imr-d06.mx.aol.com ([205.188.159.7] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTP id 2942983 for lml@lancaironline.net; Wed, 28 May 2008 16:56:02 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.159.7; envelope-from=PJHWFD@aol.com Received: from imo-d22.mx.aol.com (imo-d22.mail.aol.com [172.18.157.196]) by imr-d06.mx.aol.com (v107.10) with ESMTP id RELAYIN6-7483dc6b82be; Wed, 28 May 2008 16:55:20 -0400 Received: from PJHWFD@aol.com by imo-d22.mx.aol.com (mail_out_v38_r9.4.) id q.d5f.2d2f63c4 (14467) for ; Wed, 28 May 2008 16:38:32 -0400 (EDT) From: PJHWFD@aol.com X-Original-Message-ID: X-Original-Date: Wed, 28 May 2008 16:38:32 EDT Subject: Fwd: [LML] Re: Oil leak X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1212007112" X-Mailer: Unknown sub 34 X-Spam-Flag: NO X-AOL-IP: 172.18.157.196 -------------------------------1212007112 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit ____________________________________ From: PJHWFD To: lml@lancaironline.net Sent: 5/28/2008 6:41:08 A.M. Eastern Daylight Time Subj: Re: [LML] Re: Oil leak Steve I to had oil blowby problems and ended up installing an Andair oil separator. I installed a backet on the left accessory case and drained back intoa hex bolt below the separator. This did not work and I had results similar to you. My feeling is that I was getting back flow off high pressure oil from the drain. Lancair recomended this Location. I switched the drain to the valve cover which is where Beechcraft and Cirrus loccation theirs. End off problem for me. Now using less than qt/5hrs and a clean belly. What is your separator setup? Peter Hebert -----Original Message----- From: Steve Colwell To: lml@lancaironline.net Sent: Tue, 27 May 2008 6:54 pm Subject: [LML] Re: Oil leak Michael, Tests for cowl air pressure penetrating the case have been inconclusive so far. The latest attempt to find a crankcase air leak was a very sensitive test instrument pulling vacuum on the crankcase while I hosed down every penetration point on the engine top and bottom with a high volume air compressor. The balloon and soap suds test found a very small leak where the steel tube for the rubber vent line enters the dip stick housing. JB Weld fixed that. When aluminum tape was applied to the Dipstick to Dipstick Housing, tie wraps were also used for double security during the flight test. Steve Colwell Legacy 916 505-6099 You Said: During runup and takeoff roll the manometer (tapped into the crankcase vent about the mid-point of its length) will read zero until plane has about 120 knots indicated airspeed. At 120 to 200 knots the manometer reads 4" to 5" with a MOMENTARY spike up to 14" to 20" when power is reduced in the pattern. This symptom suggests that airspeed is pressurizing the case and pushing oil out. Check the Oil filler cap for a proper gasket and for proper sealing of the gasket. -- For archives and unsub _http://mail.lancaironline.net:81/lists/lml/List.html_ (http://mail.lancaironline.net:81/lists/lml/List.html) ____________________________________ Stay informed, get connected and more _with AOL on your phone_ (http://mobile.aol.com/productOverview.jsp?productOverview=aol-mobile-overview&?ncid=aolmbd0 0030000000139) . **************Get trade secrets for amazing burgers. Watch "Cooking with Tyler Florence" on AOL Food. (http://food.aol.com/tyler-florence?video=4&?NCID=aolfod00030000000002) -------------------------------1212007112 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
 
 
From: PJHWFD
To: lml@lancaironline.net
Sent: 5/28/2008 6:41:08 A.M.=20 Eastern Daylight Time
Subj: Re: [LML] Re: Oil leak
 
Steve
I to had oil blowby problems and en= ded up=20 installing an Andair oil separator. I installed a backet on the left acces= sory=20 case and drained back intoa hex bolt below the separator. This did not wor= k=20 and I had results similar to you. My feeling is that I was getting back fl= ow=20 off high pressure oil from the drain. Lancair recomended this Location.&nb= sp;I=20 switched the drain to the valve cover which is where Beechcraft and Cirrus= =20 loccation theirs. End off problem for me.  Now using less than qt/5hr= s=20 and a clean belly.  What is your separator setup?
Peter=20 Hebert

-----Original Message-----
From: Steve Colwell=20 <mcmess1919@yahoo.com>
To: lml@lancaironline.net
Sent: Tue, 27= May=20 2008 6:54 pm
Subject: [LML] Re: Oil leak

Michael,

Tests for cowl air pressure penetrating the case have been inconclusive so
far. The latest attempt to find a crankcase air leak was a very sensitive
test instrument pulling vacuum on the crankcase while I hosed down every
penetration point on the engine top and bottom with a high volume air
compressor.

The balloon and soap suds test found a very small leak where the steel tube
for the rubber vent line enters the dip stick housing.  JB Weld fixed that.
When aluminum tape was applied to the Dipstick to Dipstick Housing, tie
wraps were also used for double security during the flight test.=20

Steve Colwell  Legacy  916 505-6099



You Said:

During runup and takeoff roll the manometer (tapped into the crankcase vent
about the mid-point of its length) will read zero until plane has about 120
knots indicated airspeed.  At 120 to 200 knots the manometer reads 4" to 5"
with a MOMENTARY spike up to 14" to 20" when power is reduced in the
pattern.

This symptom suggests that airspeed is pressurizing the case and pushing oil
out. Check the Oil filler cap for a proper gasket and for proper sealing of
the gasket.







--
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