X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 29 Aug 2013 07:47:45 -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 6446161 for lml@lancaironline.net; Thu, 29 Aug 2013 05:38:01 -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=mreu3) with ESMTP (Nemesis) id 0Me10b-1VOet74AcX-00PauT; Thu, 29 Aug 2013 11:37:25 +0200 X-Original-Message-ID: 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: Thu, 29 Aug 2013 10:23:38 +0100 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0071_01CEA4A1.D3533A60" 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 130829-0, 29/08/2013), Outbound message X-Antivirus-Status: Clean X-Provags-ID: V02:K0:aU22r0PTpPOwIspMZv7h3Ys0E0hYbuPyxnJ2QKyM48t H3EYX+AYtvM0zdNdWT0GbB8lIxDwIUywDzhYi3mAFMby8njakm 9lJ2LjvtOtkaWHzknTgUCclZWb7zsyrQxxVJvVwZmGZuA7OBn0 g6iNAty47GnDGBoTVsnDfisrH9kP8IG5AH3X8KMSRERdemcyVY g0AKwMktvUvnynpse8M6dOk2c3uraZPotnv4pS90mQUMpfNA9l Qp0JQosucuWDdUODaPaon26zbSF8iFQwGjYEAwAt8Zkvmo6zlm TDRxouobS2dFp3V5S6eX0AlYA6ICei6oGQzSSlbydmRZZUwLkJ foXmefhC6zLa2tOs7RB4= This is a multi-part message in MIME format. ------=_NextPart_000_0071_01CEA4A1.D3533A60 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Jeff, Just sent you and Tom an email. What is disturbing here (and the similar report I=E2=80=99ve just seen = on the RV forum) is that we have cases of experts and professionals = fitting the wrong gasket. What is in the STC, assembly diagrams, = manuals, etc? Nick From: vtailjeff@aol.com=20 Sent: Wednesday, August 28, 2013 3:27 PM To: lml@lancaironline.net=20 Subject: [LML] Re: Lycoming 320 high oil temp What was the history of the gasket? Who installed it? Sent from my iPad On Aug 28, 2013, at 6:54 AM, "Nick Long" wrote: 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_0071_01CEA4A1.D3533A60 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Jeff,
 
Just sent you and Tom an email.
 
What is disturbing here (and the similar report I=E2=80=99ve just = seen on the RV=20 forum) is that we have cases of experts and professionals fitting the = wrong=20 gasket. What is in the STC, assembly diagrams, manuals, etc?
 
Nick
 
 
Sent: Wednesday, August 28, 2013 3:27 PM
Subject: [LML] Re: Lycoming 320 high oil = temp
 
What was the history of the gasket? Who installed it?

Sent = from my=20 iPad

On Aug 28, 2013, at 6:54 AM, "Nick Long" <nick@beaglepup.info>=20 wrote:

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=20 blocking an oil hole; I=E2=80=99d be worried a bit might break off and = get stuck=20 somewhere it 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=20 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=20 with trying to solve oil temps over a $3 gasket really gets me.  = I've=20 felt your pain Nick..   Tom=20 McNerney www.N54SG.com         Hello=20 Everyone,My=20 engine is currently being overhauled. It's a IO-320-B1A in a Lancair = 320. It=20 was 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=20 were installed, with the net effect that oil would not have been = diverted to=20 the 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=20 valve is in the housing; this extends as it gets hot and closes off a = hole in=20 the engine back plate to divert the oil through the cooler. You can = see that=20 the gasket cut out does not fit the cut out in the housing; this = prevents the=20 valve closing the hole fully. Also, the old fashioned viscosity valve = was=20 fitted =E2=80=93 in the other picture this is being held in place with = a finger. This=20 also prevents the thermostatic valve from extending fully. The = viscosity valve=20 was superceded 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=20 STC. 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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