Return-Path: Received: from sccrmhc11.comcast.net ([204.127.202.55] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 855113 for flyrotary@lancaironline.net; Mon, 04 Apr 2005 23:07:51 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.202.55; envelope-from=jesse@jessfarr.com Received: from office5 (pcp04959909pcs.midval01.tn.comcast.net[68.59.199.44]) by comcast.net (sccrmhc11) with SMTP id <2005040503070301100btk2be>; Tue, 5 Apr 2005 03:07:04 +0000 Message-ID: <002e01c5398c$82e24a00$057ba8c0@farr.com> From: "jesse farr" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Break In Period? Date: Mon, 4 Apr 2005 23:06:50 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002B_01C5396A.FB999470" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_002B_01C5396A.FB999470 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageYou may be absolutely correct in those thoughts, be sure and let = us all know. All I know is I have never had reciprocating rings seat = worth a darn with detergent and/or more so synthetic oil; but, then = again, rings don't move up and down against multiple honed cyinder, = etc.. So, who knows, our basically two cylinder walls and six rings may = actually work out better. rots a ruck.=20 jofarr ----- Original Message ----- From: Russell Duffy=20 I personally think the whole "never use synthetic oil for break-in" = recommendation is mostly folklore. Corvettes, and probably a number of = other engines come straight off the assembly line with full synthetic, = and they've got a lot more parts to seat that we do. Sump oil is = irrelevant for apex seals, and half irrelevant for side seals. Oil = rings, yeah, those are new. There's only one new bearing, in the whole = engine though. I think I'll be OK... or not :-) ------=_NextPart_000_002B_01C5396A.FB999470 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
You may be absolutely correct in those = thoughts, be=20 sure and let us all know.  All I know is I have never had=20 reciprocating rings seat worth a darn with detergent and/or more so = synthetic oil; but, then again, rings don't move up and down against = multiple=20 honed cyinder, etc..  So, who knows, our basically two cylinder = walls and=20 six rings may actually work out better. rots a ruck.
jofarr
----- Original Message ----- = From: Russell=20 Duffy
 
I personally think the whole "never use = synthetic oil for=20 break-in" recommendation is mostly folklore.  Corvettes, and = probably a=20 number of other engines come straight off the assembly line = with full=20 synthetic, and they've got a lot more parts to seat that we do.  = Sump oil=20 is irrelevant for apex seals, and half irrelevant for side = seals.  Oil=20 rings, yeah, those are new.  There's only one new bearing, in the = whole=20 engine though.  I think I'll be OK... or not=20 :-)
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