Return-Path: Received: from smtp-2u-1g.atlantic.net ([209.208.0.105] verified) by logan.com (CommuniGate Pro SMTP 4.2b2) with SMTP id 3179726 for flyrotary@lancaironline.net; Mon, 19 Apr 2004 22:29:10 -0400 Received: (qmail 14632 invoked by uid 0); 20 Apr 2004 02:30:58 -0000 Received: from unknown (HELO main) (209.208.110.67) by smtp-2u-1g.atlantic.net with SMTP; 20 Apr 2004 02:30:58 -0000 From: "Dean Head" To: "Rotary motors in aircraft" Subject: Engine storage Date: Mon, 19 Apr 2004 22:29:04 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0018_01C4265D.B9651500" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Thread-Index: AcQmfz9XRa7VkOObQU69UeqZWZKINA== Message-ID: This is a multi-part message in MIME format. ------=_NextPart_000_0018_01C4265D.B9651500 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Group/Rusty, We=92ll after seeing David=92s post on the corrosion issue I became = paranoid about my engine. I bought one of the =93generator=94 engines from RX-7 Specialties (from a previous member of the group). Never giving a = thought about water being in the bottom of the engine due to the fact that it = had been ported and appeared to be preserved (i.e. I could see a fair amount = of transmission fluid thru the exhaust ports). Due to the machine work done = the engine it would have to have been disassembled. Also, there was evidence = of the gray sealer being used extensively. It does not appear to have been = run post the modifications. =20 Well cut to the chase=85I removed the bottom plug on the center housing = and what did I find! Damp black =93stuff=94. I investigated with a q-tip, = damp black stuff no water. I inserted a dowel in the hole and more damp black = stuff. After poking at it for a bit I rolled the engine on its side and out = came maybe a =BD oz or so of clear water and black stuff (nothing reddish). = Looking into the rest of the water jacket ports no moisture just a bit of red = rust like you would see in any engine. =20 So, think I should disassemble it now and see what the deal is? I = intended to disassemble and install Tracy=92s apex seals in place of the = ceramics. But I had thought to wait until I=92m ready to attach it to the Cozy. (quite = a while in the future). I suppose I could tear it down and then pickle it = in oil until I=92m finally ready to reassemble and run the engine. I would = never feel comfortable flying it without a through internal inspection anyway. =20 I wonder if the water came from internal condensation over the past 3 = years? It is stored in my shop which is not air conditioned. =20 Thoughts? =20 Thanks, Dean Head Cozy MK4 BKV FL =20 ------=_NextPart_000_0018_01C4265D.B9651500 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Group/Rusty,

We’ll after seeing David’s post on the = corrosion issue I became paranoid about my engine. I bought one of the = “generator” engines from RX-7 Specialties (from a previous member of the group). = Never giving a thought about water being in the bottom of the engine due to = the fact that it had been ported and appeared to be preserved (i.e. I could see a = fair amount of transmission fluid thru the exhaust ports). Due to the machine = work done the engine it would have to have been disassembled. Also, there was = evidence of the gray sealer being used extensively. It does not appear to have = been run post the modifications.

 

Well cut to the chase…I removed the bottom plug = on the center housing and what did I find! Damp black “stuff”. I investigated with a q-tip, damp black stuff no water. I inserted a dowel = in the hole and more damp black stuff. After poking at it for a bit I rolled = the engine on its side and out came maybe a =BD oz or so of clear water and = black stuff (nothing reddish). Looking into the rest of the water jacket ports = no moisture just a bit of red rust like you would see in any = engine.

 

So, think I should disassemble it now and see what = the deal is? I intended to disassemble and install Tracy’s apex seals in place of the ceramics. But I had thought to wait until = I’m ready to attach it to the Cozy. (quite a while in the future). I suppose = I could tear it down and then pickle it in oil until I’m finally = ready to reassemble and run the engine. I would never feel comfortable flying it = without a through internal inspection anyway.

 

I wonder if the water came from internal condensation = over the past 3 years? =A0It is stored in my shop which is not air = conditioned.

 

Thoughts?

 

Thanks,

Dean Head

Cozy MK4

BKV FL

=A0

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