X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 03 Aug 2014 19:23:50 -0400 Message-ID: X-Original-Return-Path: Received: from omr-d06.mx.aol.com ([205.188.109.203] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 7061870 for lml@lancaironline.net; Sun, 03 Aug 2014 14:46:10 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.109.203; envelope-from=vtailjeff@aol.com Received: from mtaout-aac02.mx.aol.com (mtaout-aac02.mx.aol.com [172.27.2.34]) by omr-d06.mx.aol.com (Outbound Mail Relay) with ESMTP id 2247670000095 for ; Sun, 3 Aug 2014 14:45:36 -0400 (EDT) Received: from [10.233.71.169] (unknown [166.147.97.54]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mtaout-aac02.mx.aol.com (MUA/Third Party Client Interface) with ESMTPSA id CFA0A3800008A for ; Sun, 3 Aug 2014 14:45:35 -0400 (EDT) From: Jeff Edwards Content-Type: multipart/alternative; boundary=Apple-Mail-21E18CDD-5150-4DF6-BC27-0FEA2ECA7F3A Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Subject: Re: [LML] Re: piston used by Performance Engines in TSIO-550? X-Original-Message-Id: X-Original-Date: Sun, 3 Aug 2014 13:45:34 -0500 References: In-Reply-To: X-Original-To: Lancair Mailing List X-Mailer: iPad Mail (11D257) x-aol-global-disposition: G x-aol-sid: 3039ac1b022253de834f77f5 X-AOL-IP: 166.147.97.54 --Apple-Mail-21E18CDD-5150-4DF6-BC27-0FEA2ECA7F3A Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Amen!=20 Sent from my iPad > On Aug 3, 2014, at 10:27 AM, "Bill Harrelson" wrote: >=20 > Mark, > =20 > You have received some good advice on this problem here on the LML. I can o= nly encourage you to act on that advice. Finding the manufacturer of the pis= tons should not be your goal. You do not want them in your engine. It is unl= ikely that you will get any help or support from Performance in this matter.= > =20 > There are a few, and just a few, extremely competent engine shops in the c= ountry. Amazingly, Performance was in this esteemed category several years a= go. I have heard a few theories as to what caused the precipitous downfall o= f this once respected shop but I don=E2=80=99t really know.=20 > =20 > I too have been burned by Performance. Because I had no confidence in thei= r engine, I had Barrett overhaul it before it had ever even been started. Th= ey found serious problems such as an improperly repaired oil pump housing th= at would probably have seized within the first few hours. In addition there a= re the questionable pistons. It was rather unpleasant paying for my engine t= wice, but it was the decision to do so that now gives me the confidence to f= ly the engine in some fairly unforgiving situations. > =20 > Contact Barrett or one of the top shops that have been recommended to you o= r consider trading in for a remanufactured engine from Continental (probably= the quickest solution). It will be painful, inconvenient and expensive but i= n the long run, you=E2=80=99ll be glad that you did. > =20 > Best of luck with this. Let us know what you decide to do. > =20 > Bill Harrelson > N6ZQ IV 600 hrs. > =20 > =20 > =20 > =20 > =20 > =20 > =20 > =20 > From: Mark Finkelstein > Sent: Wednesday, July 30, 2014 8:04 AM > To: Lancair Mailing List > Subject: [LML] piston used by Performance Engines in TSIO-550? > =20 > I recently experienced high temps in one cylinder in my ES-P. During the l= ast hour of a four-hour flight, oil pressure went from 41 down to 17. On la= nding I found that I had lost 7 quarts of oil, with four remaining. When cyl= inder was removed and inspected, it was determined that one of the piston ri= ngs was worn and another one was stuck which would account for high crankcas= e pressure and hence the oil loss. It was also noticed that the piston is n= on-TCM, and oddly has only three rings, whereas apparently all modern piston= s have four rings. =20 > =20 > We are having trouble determining the manufacturer of the piston. Is there= anyone out there who has run into a similar situation with Performance Engi= ne pistons and might have information as to the manufacturer of the pistons t= hey used in TSIO 550s? Also, we need to be certain of the compression ratio= . Understood that standard ratio in turbo 500 series is 7:5:1 but wondering= if Performance Engines might have done something to alter that. > =20 > Many thanks, >=20 > Mark Finkelstein > Pecan Plantation, TX > N36YZ --Apple-Mail-21E18CDD-5150-4DF6-BC27-0FEA2ECA7F3A Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Amen! 

Sent from my iPad

On Aug 3, 2014, at 10:27 AM, "Bill Harrelson" <n5zq@verizon.net> wrote:

=
Mark,
 
You have received some good advice on this=20= problem here on the LML. I can only encourage you to act on that advice. Fin= ding=20 the manufacturer of the pistons should not be your goal. You do not want the= m in=20 your engine. It is unlikely that you will ge= t any=20 help or support from Performance in this matter.
 
There are a few, and just a few, extremely=20= competent engine shops in the country. Amazingly, Performance was in this=20= esteemed category several years ago. I have heard a few theories as to what=20= caused the precipitous downfall of this once respected shop but I don=E2=80=99= t really=20 know. 
 
I too have=20 been burned by Performance. Because I had no confidence in their=20 engine, I had Barrett overhaul it before i= t had=20 ever even been started. They found serious problems such as an improperly=20= repaired oil pump housing that would probably have seized within the first f= ew=20 hours. In addition there are the questionable pistons. It was rather unpleas= ant=20 paying for my engine twice, but it was the decision to do so that now gives m= e=20 the confidence to fly the engine in some fairly unforgiving situations.=20
 
Contact Barrett or one of the top shops tha= t have=20 been recommended to you or consider trading in for a remanufactured engine f= rom=20 Continental (probably the quickest solution). It will be painful, inconvenie= nt=20 and expensive but in the long run, you=E2=80=99ll be glad that you did.
 
Best of luck with this. Let us know what yo= u=20 decide to do.
 
Bill Harrelson
N6ZQ    IV   600 hrs.
 
 
 
 
 
 
 
 
From: Mark Finkelstein
Sent: Wednesday, July 30, 2014 8:04 AM
Subject: [LML] piston used by Performance Engines in=20 TSIO-550?
 
I recently experienced high temps in one cylinder in my ES-= P. =20 During the last hour of a four-hour flight, oil pressure went from 41 down t= o=20 17.  On landing I found that I had lost 7 quarts of oil, with four=20 remaining. When cylinder was removed and inspected, it was determined that o= ne=20 of the piston rings was worn and another one was stuck which would account f= or=20 high crankcase pressure and hence the oil loss.  It was also noticed th= at=20 the piston is non-TCM, and oddly has only three rings, whereas apparently al= l=20 modern pistons have four rings.  =20
 
We are having trouble determining the manufacturer of the piston. Is th= ere=20 anyone out there who has run into a similar situation with Performance Engin= e=20 pistons and might have information as to the manufacturer of the pistons the= y=20 used in TSIO 550s?  Also, we need to be certain of the compression=20 ratio.  Understood that standard ratio in turbo 500 series is 7:5:1 but= =20 wondering if Performance Engines might have done something to alter that.=20=
 
Many thanks,

Mark Finkelstein
Pecan Plantation, TX
N36YZ
= --Apple-Mail-21E18CDD-5150-4DF6-BC27-0FEA2ECA7F3A--