Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Mon, 24 Jan 2005 16:53:09 -0500 Message-ID: X-Original-Return-Path: Received: from [65.32.5.132] (HELO ms-smtp-02.tampabay.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 619885 for lml@lancaironline.net; Mon, 24 Jan 2005 15:07:11 -0500 Received-SPF: none receiver=logan.com; client-ip=65.32.5.132; envelope-from=ckohler1@cfl.rr.com Received: from 34025820001 (152.227.204.68.cfl.rr.com [68.204.227.152]) by ms-smtp-02.tampabay.rr.com (8.12.10/8.12.7) with SMTP id j0OK6cNs014485 for ; Mon, 24 Jan 2005 15:06:39 -0500 (EST) X-Original-Message-ID: <001a01c50250$3fd155d0$6401a8c0@34025820001> From: "Charlie Kohler" X-Original-To: "LancairList" Subject: IVP Continental detonation in X-Original-Date: Mon, 24 Jan 2005 15:06:53 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0017_01C50226.56A7D6A0" 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 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0017_01C50226.56A7D6A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Here is what I've been able to discover today; Jack McAllister in Washington state has replaced his turbocharger = compressor with parts from the Piper Mirage (Lycoming). This was done at = Approved Turbo Components (ATC) in Visalia California. (Speak with = Mary). It has no interference with Dolly Parton cheeks. This has many = positive benefits, one of which is lowered inlet temperatures into the = throttle body as well as increased manifold pressure availability at = altitude. He also has increased the air filter area by using a K & N = Extreme Top increasing the filter area from 57 inches to 186 in.=B2. He = does not ever see a filter bypass light on take off. Spoke with Monte Barrett. He did quite a bit of work with Jack = McAllister and Brent Reagan with regards to turbocharger's. He said that = we should get the bigger compressors. Then I spoke with Bob Minnis. He has outstanding credentials. He was at = Continental and was the TRIO 550 / Lancair expert. Bob Minnis says to = prevent this "backfire", use 2500 RPM IN CRUISE ABOVE 20,000 FEET. =20 So IMHO-- and to sum this all up; Magnetos--if you have ever lost magneto pressurization and flown above = (let's just say 15,000) and felt a stumble or misfire--they both should = be overhauled. Carbon tracking once started on the distributor block can = never be removed. Here's my suggestion, if you have this problem (random backfire in = cruise) make sure your ignition system is pressurized/and sanitary = --then if all checks OK and it continues, check exhaust system, turbine = wheel for erosion, compressor wheel for damage, and if all checks OK, = reduce manifold pressure--increase rpm, until it does not repeat itself. = Then at the next Turbo overhaul, get the bigger compressor. Apparently = there is a demand for the smaller compressors that we have --and if it = is in good shape they will exchange your parts for the bigger Malibu = compressors for little or no cost. Charlie K. ------=_NextPart_000_0017_01C50226.56A7D6A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Here is what I've been able to discover today;

Jack McAllister in Washington state has replaced his turbocharger = compressor=20 with parts from the Piper Mirage (Lycoming). This was done at Approved = Turbo=20 Components (ATC) in Visalia California. (Speak with Mary). It has no=20 interference with Dolly Parton cheeks. This has many positive benefits, = one of=20 which is lowered inlet temperatures into the throttle body as well as = increased=20 manifold pressure availability at altitude. He also has increased the = air filter=20 area by using a K & N Extreme Top increasing the filter area from 57 = inches=20 to 186 in.=B2. He does not ever see a filter bypass light on take = off.

Spoke with Monte Barrett. He did quite a bit of work with Jack = McAllister and=20 Brent Reagan with regards to turbocharger's. He said that we should get = the=20 bigger compressors.

Then I spoke with Bob Minnis. He has outstanding credentials. He was = at=20 Continental and was the TRIO 550 / Lancair expert. Bob Minnis says to = prevent=20 this "backfire", use 2500 RPM IN CRUISE ABOVE 20,000 FEET. 

So IMHO-- and to sum this all up;

Magnetos--if you have ever lost magneto pressurization and flown = above (let's=20 just say 15,000) and felt a stumble or misfire--they both should be = overhauled.=20 Carbon tracking once started on the distributor block can never be = removed.

Here's my suggestion, if you have this problem (random backfire in = cruise)=20 make sure your ignition system is pressurized/and sanitary --then if all = checks=20 OK and it continues, check exhaust system, turbine wheel for erosion, = compressor=20 wheel for damage, and if all checks OK, reduce manifold = pressure--increase rpm,=20 until it does not repeat itself. Then at the next Turbo overhaul, get = the bigger=20 compressor. Apparently there is a demand for the smaller compressors = that we=20 have --and if it is in good shape they will exchange your parts for the = bigger=20 Malibu compressors for little or no cost.

 

Charlie K.

 

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