Return-Path: Received: from out001.verizon.net ([206.46.170.140] verified) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3180848 for flyrotary@lancaironline.net; Tue, 20 Apr 2004 12:50:45 -0400 Received: from verizon.net ([4.12.145.173]) by out001.verizon.net (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP id <20040420165044.KUIX1464.out001.verizon.net@verizon.net> for ; Tue, 20 Apr 2004 11:50:44 -0500 Message-ID: <408554E4.6070900@verizon.net> Date: Tue, 20 Apr 2004 12:50:44 -0400 From: Finn Lassen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax; PROMO) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Engine storage References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------090503010409060402020507" X-Authentication-Info: Submitted using SMTP AUTH at out001.verizon.net from [4.12.145.173] at Tue, 20 Apr 2004 11:50:44 -0500 This is a multi-part message in MIME format. --------------090503010409060402020507 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit You could attempt to flush it out. Chemicals and maybe even mix some abrasive in it. On the other hand, I think that the amazing improvement I saw in my cooling is partly due to taking the time to beadblast the water passages (mainly rotor housings). Finn David Leonard wrote: > Dean, My rust was almost all black, not red. If you are going to tear > it down someday anyway, may as well do it now and perhaps prevent some > continued damage. Good luck. > > > > David Leonard > > The Rotary Roster: > > http://members.aol.com/_ht_a/rotaryroster/index.html > > -----Original Message----- > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] > On Behalf Of Dean Head > Sent: Monday, April 19, 2004 7:29 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Engine storage > > > > 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 ½ 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? It is stored in my shop which is not air conditioned. > > > > Thoughts? > > > > Thanks, > > Dean Head > > Cozy MK4 > > BKV FL > > > --------------090503010409060402020507 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit You could attempt to flush it out. Chemicals and maybe even mix some abrasive in it.

On the other hand, I think that the amazing improvement I saw in my cooling is partly due to taking the time to beadblast the water passages (mainly rotor housings).

Finn

David Leonard wrote:

Dean, My rust was almost all black, not red.  If you are going to tear it down someday anyway, may as well do it now and perhaps prevent some continued damage.  Good luck.

 

David Leonard

The Rotary Roster:

http://members.aol.com/_ht_a/rotaryroster/index.html

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Dean Head
Sent: Monday, April 19, 2004 7:29 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Engine storage

 

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 ½ 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?  It is stored in my shop which is not air conditioned.

 

Thoughts?

 

Thanks,

Dean Head

Cozy MK4

BKV FL

 

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