X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 30 Aug 2007 12:18:43 -0400 Message-ID: X-Original-Return-Path: Received: from bay0-omc3-s37.bay0.hotmail.com ([65.54.246.237] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2300773 for lml@lancaironline.net; Thu, 30 Aug 2007 10:37:30 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.54.246.237; envelope-from=kennrice@msn.com Received: from hotmail.com ([65.54.229.75]) by bay0-omc3-s37.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.2668); Thu, 30 Aug 2007 07:36:52 -0700 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 30 Aug 2007 07:36:52 -0700 X-Original-Message-ID: Received: from 69.252.142.246 by BAY110-DAV3.phx.gbl with DAV; Thu, 30 Aug 2007 14:36:50 +0000 X-Originating-IP: [69.252.142.246] X-Originating-Email: [kennrice@msn.com] X-Sender: kennrice@msn.com From: "Ken Rice" X-Original-To: References: Subject: Re: Re:More Loose Screws X-Original-Date: Thu, 30 Aug 2007 07:36:47 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0336_01C7EAD8.85375520" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.50.0039.1900 Seal-Send-Time: Thu, 30 Aug 2007 07:36:47 -0700 X-OriginalArrivalTime: 30 Aug 2007 14:36:52.0003 (UTC) FILETIME=[34704F30:01C7EB13] X-Original-Return-Path: kennrice@msn.com This is a multi-part message in MIME format. ------=_NextPart_000_0336_01C7EAD8.85375520 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I haven't found the new service bulletin that I've heard is on the ram = air kit, but I unpacked my ram air kit today and checked the butterfly = screws. Not only were they not locktighted, they were only hand tight. = I also wonder about the bottom brass bushing. It is held in place by = being pressed into the aluminum ram air tube, but I was able to pry it = out using my fingernails. How long before it vibrates loose and falls = away leaving the butterfly shaft to rattle around in an over sized hole? = Now that I've taken the whole thing apart, I'm going to replace the = butterfly shaft with a bolt flattened and tapped to hold the flapper and = the threaded end coming out the top to hold the lever and a nut to hold = it all in place. I'm also going to remount the valve down towards the = inlet opening where it is visible and accessible. =20 ----- Original Message -----=20 From: asw20747@aol.com=20 To: lml@lancaironline.net=20 Sent: Wednesday, August 29, 2007 7:41 AM Subject: Re:More Loose Screws I could not see any visible damage to the exhuast valve on my #5 when = it ate a screw but when tested by the cylinder shop the exhuast valve = was leaking due to damage from the screw exiting. Even if the valve was = fine the shop ground off all the burrs and high points caused by the = screw to prevent them from becoming a source of heat that causes the = mixture to ignite early. Preignition will quickly ruin your day and the = engine.=20 Maybe I missed it. Did your friend pull #2 cyl and have it checked and = cleaned up? I not an A&P, but I would recommend it. I did the R&R myself = for the cost of a few gaskets. The local shop charges a flat $300 for = the job. That, plus the cost of any cylinder work is cheap insurance, in = my humble opinion. Paul: As far as I know, they did a compression check on all the cyl's and = they were all (including #2) above 76/80. I'm not an expert on this at = all, but wouldn't that indicate an intact valve seat(s)? Thanks for you help in originally bringing this to our attention. Erik Larson Legacy N74FX -------------------------------------------------------------------------= ----- Email and AIM finally together. You've gotta check out free AOL = Mail! ------=_NextPart_000_0336_01C7EAD8.85375520 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I haven't found the new service bulletin that I've heard is on the = ram air=20 kit, but I unpacked my ram air kit today and checked the butterfly=20 screws.  Not only were they not locktighted, they were only hand=20 tight.  I also wonder about the bottom brass bushing.  It is = held in=20 place by being pressed into the aluminum ram air tube, but I was able to = pry it=20 out using my fingernails.  How long before it vibrates loose and = falls away=20 leaving the butterfly shaft to rattle around in an over sized = hole?  Now=20 that I've taken the whole thing apart, I'm going to replace the = butterfly shaft=20 with a bolt flattened and tapped to hold the flapper and the threaded = end coming=20 out the top to hold the lever and a nut to hold it all in place.  = I'm also=20 going to remount the valve down towards the inlet opening where it is = visible=20 and accessible. 
----- Original Message -----
Sent: Wednesday, August 29, = 2007 7:41=20 AM
Subject: Re:More Loose = Screws

I could not=20 see any visible damage to the exhuast valve on my #5 when it ate a = screw=20  but when tested by the cylinder shop the exhuast valve was = leaking due=20 to damage from the screw exiting. Even if the valve was fine the shop = ground=20 off all the burrs and high points caused by the screw to prevent them = from=20 becoming a source of heat that causes the mixture to ignite early. = Preignition=20  will quickly ruin your day and the engine.
Maybe I missed it. Did your friend pull #2 cyl and have = it=20 checked and cleaned up? I not an A&P, but I would recommend it. I = did the=20 R&R myself for the cost of a few gaskets. The local shop charges a = flat=20 $300 for the job. That, plus the cost of any cylinder work is cheap = insurance,=20 in my humble opinion.

Paul:

As far as I = know, they=20 did a compression check on all the cyl's and they were all (including = #2)=20 above 76/80.  I'm not an expert on this at all, but wouldn't that = indicate an intact valve seat(s)?

Thanks for you help in = originally=20 bringing this to our attention.

Erik=20 Larson

Legacy
N74FX
Email and AIM finally together. You've gotta check out free AOL = Mail!
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