X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 28 Aug 2013 07:54:37 -0400 Message-ID: X-Original-Return-Path: Received: from moutng.kundenserver.de ([212.227.17.10] verified) by logan.com (CommuniGate Pro SMTP 6.0.6) with ESMTPS id 6444613 for lml@lancaironline.net; Wed, 28 Aug 2013 06:37:48 -0400 Received-SPF: none receiver=logan.com; client-ip=212.227.17.10; envelope-from=nick@beaglepup.info Received: from Asus8 ([91.112.29.126]) by mrelayeu.kundenserver.de (node=mreu1) with ESMTP (Nemesis) id 0McAfD-1VVL1c23x1-00JKDs; Wed, 28 Aug 2013 12:37:12 +0200 X-Original-Message-ID: <6FDDBF03B60B47D9B4994242EC12C7F6@Asus8> Reply-To: "Nick Long" From: "Nick Long" X-Original-To: "Lancair Mailing List" References: In-Reply-To: Subject: Re: [LML] Re: Lycoming 320 high oil temp X-Original-Date: Wed, 28 Aug 2013 11:27:29 +0100 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00AD_01CEA3E1.94A03720" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3505.912 X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3505.912 X-Antivirus: avast! (VPS 130827-1, 27/08/2013), Outbound message X-Antivirus-Status: Clean X-Provags-ID: V02:K0:LFoojfMXUeDPTvoccIrrQ/rOZ3QknpOk1vLn1v2Ee2Q wBGwM25PAEMj/Igbw3yjTdVpkxYY9Xhwq89dBD9BQV0uOKVU+Y Z8KD5aKpo/xv8tAJsjRvQp9solnB2TUpkke7F6H3g7XJS0rDAm D7HUXP7Zl5y3SHCQPArTi0GiNfxt/dwIOnW8wGA0Zh15rc/H9J YQEmp2tzYMYxsMAr3p5xragQ/c69BLhpvyyqHzdr5VEcWCUziz 6Tbgcz82ujJopH3R88AuMHLnqYNY6BDiY6Z/k2hjb78dmI/Zib aEs9VtjuIU2aE6tGtJFtUPd5+QC5UWCYR5p2+s9SSmWXnxnf4c yT6P+ZgLdUyBDoEV0soI= This is a multi-part message in MIME format. ------=_NextPart_000_00AD_01CEA3E1.94A03720 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hi Tom, Interesting. I think there=E2=80=99s a clear message here =E2=80=93 = anyone with high oil temp should check these gaskets. You would think it would be difficult to fit the wrong gasket =E2=80=93 = they are visibly wrong. Personally, I=E2=80=99d be very unhappy about a = gasket partially blocking an oil hole; I=E2=80=99d be worried a bit = might break off and get stuck somewhere it could block the passageway to = a bearing. Nick From: dudewanarace@yahoo.com=20 Sent: Tuesday, August 27, 2013 6:59 PM To: lml@lancaironline.net=20 Subject: [LML] Re: Lycoming 320 high oil temp Ironically, I had the exact same problem, but reversed. I had the = gasket for your housing installed on a B&C oil filter adapter with a = vernatherm. I had high oil temps from the day I purchased the airplane. = After adding a second oil cooler and getting exactly NO change in temp, = I started digging. I would never have thought somebody would think this = gasket would have worked. You can see the gasket is blocking over half = of the port that flows oil to the cooler. http://www.n54sg.com/wp-content/uploads/2011/01/wronggasket02.jpg The difference in gaskets, only labeled backwards from your application: http://www.n54sg.com/wp-content/uploads/2011/01/wronggasket01.jpg Really disappointed by whoever did that to both of us. The headaches I = dealt with trying to solve oil temps over a $3 gasket really gets me. = I've felt your pain Nick.. Tom McNerney www.N54SG.com=20 Hello Everyone, My engine is currently being overhauled. It's a IO-320-B1A in a Lancair = 320. It was fitted with a remote oil filter and the engine shop has = shown me something interesting. They say the wrong gasket was fitted and = two diversion valves were installed, with the net effect that oil would = not have been diverted to the cooler properly. Here are some pictures I took and what I recollect of the explanation = about the oil system. In one picture I am holding the oil filter take off housing. The = thermostatic valve is in the housing; this extends as it gets hot and = closes off a hole in the engine back plate to divert the oil through the = cooler. You can see that the gasket cut out does not fit the cut out in = the housing; this prevents the valve closing the hole fully. Also, the = old fashioned viscosity valve was fitted =E2=80=93 in the other picture = this is being held in place with a finger. This also prevents the = thermostatic valve from extending fully. The viscosity valve was = superceded by the thermostatic valve ages ago and you should not have = both fitted. Apparently, the result would have been much reduced flow through the oil = cooler. (With the oil filter on the engine, a different housing is used; the = thermostatic valve comes in from a different direction and these issues = do not occur.) I'm told that this remote filter conversion was fitted exactly according = to an STC. I have had high oil temperatures with this engine and this = looks like the explanation. If anyone has the remote oil filter = conversion and is seeing high oil temperatures it may be worth checking = these details. Yours, Nick Long ------=_NextPart_000_00AD_01CEA3E1.94A03720 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Hi Tom,
 
Interesting. I think there=E2=80=99s a clear message here =E2=80=93 = anyone with high oil=20 temp should check these gaskets.
 
You would think it would be difficult to fit the wrong gasket = =E2=80=93 they are=20 visibly wrong. Personally, I=E2=80=99d be very unhappy about a gasket = partially blocking=20 an oil hole; I=E2=80=99d be worried a bit might break off and get stuck = somewhere it=20 could block the passageway to a bearing.
 
Nick
 
 
Sent: Tuesday, August 27, 2013 6:59 PM
Subject: [LML] Re: Lycoming 320 high oil = temp
 
Ironically, I had the exact same problem, but reversed.  I had = the=20 gasket for your housing installed on a B&C oil filter adapter with a = vernatherm.  I had high oil temps from the day I purchased the=20 airplane.  After adding a second oil cooler and getting exactly NO = change=20 in temp, I started digging.  I would never have thought somebody = would=20 think this gasket would have worked.  You can see the gasket is = blocking=20 over half of the port that flows oil to the cooler.
http://www.n54sg.com/wp-content/uploads/2011/01/wronggasket02.jpg
 
The=20 difference in gaskets, only labeled backwards from your = application: http://www.n54sg.com/wp-content/uploads/2011/01/wronggasket01.jpg   Really=20 disappointed by whoever did that to both of us.  The headaches I = dealt with=20 trying to solve oil temps over a $3 gasket really gets me.  I've = felt your=20 pain Nick..   Tom=20 McNerney www.N54SG.com=20         Hello=20 Everyone,My=20 engine is currently being overhauled. It's a IO-320-B1A in a Lancair = 320. It was=20 fitted with a remote oil filter and the engine shop has shown me = something=20 interesting. They say the wrong gasket was fitted and two diversion = valves were=20 installed, with the net effect that oil would not have been diverted to = the=20 cooler properly.Here=20 are some pictures I took and what I recollect of the explanation about = the oil=20 system.In=20 one picture I am holding the oil filter take off housing. The = thermostatic valve=20 is in the housing; this extends as it gets hot and closes off a hole in = the=20 engine back plate to divert the oil through the cooler. You can see that = the=20 gasket cut out does not fit the cut out in the housing; this prevents = the valve=20 closing the hole fully. Also, the old fashioned viscosity valve was = fitted =E2=80=93 in=20 the other picture this is being held in place with a finger. This also = prevents=20 the thermostatic valve from extending fully. The viscosity valve was = superceded=20 by the thermostatic valve ages ago and you should not have both=20 fitted.Apparently,=20 the result would have been much reduced flow through the oil = cooler.(With=20 the oil filter on the engine, a different housing is used; the = thermostatic=20 valve comes in from a different direction and these issues do not=20 occur.)I'm=20 told that this remote filter conversion was fitted exactly according to = an STC.=20 I have had high oil temperatures with this engine and this looks like = the=20 explanation. If anyone has the remote oil filter conversion and is = seeing high=20 oil temperatures it may be worth checking these details.Yours,Nick=20 Long
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