X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao08.cox.net ([68.230.241.31] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 890014 for flyrotary@lancaironline.net; Wed, 20 Apr 2005 12:15:51 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.31; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao08.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050420161454.TYJ18934.fed1rmmtao08.cox.net@BigAl> for ; Wed, 20 Apr 2005 12:14:54 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: stock 3rd gen oil filter- bypass valve? Date: Wed, 20 Apr 2005 09:15:11 -0700 Message-ID: <001401c545c4$20d5b470$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0015_01C54589.7476DC70" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0015_01C54589.7476DC70 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 What I do know is that if the filter plugs up under the situation you = are describing, oil flow to the engine (through the filter) would be nil.. Because the ONLY path for oil into the engine from the stock rear-iron pedestal is THROUGH the filter assembly (out the pedestal to the filter, then back into the pedestal to the interior of the engine). I've proven this conclusively with my multiple cores... But you would still get an adequate oil pressure reading because the oil pressure transducer gets = it's feed off the path to the pressure regulator, which originates "before" = the filter in the plumbing scheme. =20 That is an unacceptable possibility that would destroy the engine for = want of a "cheap" oil filter. Having a filter with an internal bypass = provides that protection to the engine.. dirty lubrication is usually a mite or = two better than no lubrication at all. I should have cut open one of my used filters on the set of 3 engines when I disassembled them.. but never = thought about it then.. and I've since cleaned out the "factory" er.. garage. =20 Dave =20 Yeah; I agree completely; but what would "trip" that internal filter = bypass; the oil pressure remains about the same even if the filter is very = dirty; unless increasing the flow to the pressure regulator significantly = increases pressure. I guess Rusty is going to have to cut one open. =20 Or do what I did. Full flow remote dual filter block with K&n HP-1 = filters (with high pressure bypass); and only filtered oil going through the = cooler and back to the engine. =20 Al =20 Al >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_0015_01C54589.7476DC70 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

 
 What I do know is that if the filter plugs up under the situation = you are describing, oil flow to the engine (through the filter) would be nil.. = Because the ONLY path for oil into the engine from the stock rear-iron pedestal = is THROUGH the filter assembly (out the pedestal to the filter, then back = into the pedestal to the interior of the engine).  I've proven this = conclusively with my multiple cores... But you would still get an adequate oil = pressure reading because the oil pressure transducer gets it's feed off the path = to the pressure regulator, which originates "before" the filter in = the plumbing scheme.
 
That is an unacceptable possibility that would destroy the engine for = want of a "cheap" oil filter. Having a filter with an internal bypass = provides that protection to the engine.. dirty lubrication is usually a mite or = two better than no lubrication at all. I should have cut open one of my used filters on the set of 3 engines when I disassembled them.. but never = thought about it then.. and I've since cleaned out the "factory" er.. = garage.
 
Dave

 

Yeah; I agree completely; but = what would “trip” that internal filter bypass; the oil pressure remains = about the same even if the filter is very dirty; unless increasing the flow to the pressure regulator significantly increases pressure.  I guess Rusty = is going to have to cut one open.

 

Or do what I did.  Full flow = remote dual filter block with K&n HP-1 filters (with high pressure bypass); = and only filtered oil going through the cooler and back to the = engine.

 

Al

 

Al

>>  Homepage:  http://www.flyrotary.com/

>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html

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