Mailing List flyrotary@lancaironline.net Message #7273
From: Marko Bewersdorff <fly@bewersdorff.com>
Subject: RE: [FlyRotary] Re: Cooling Problem Identified
Date: Sun, 18 Apr 2004 09:36:38 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
This is just theory, brain storm or brain fart - you're the judge.
 
One thought: Flush with a solvent that binds with water, and evaporates easily, and that doesn't eat up the internal seals.
So perhaps a flushing with denat. alcohol or avgas prior to blowing the case dry with compressed air will remove a lot of water.
 
Alternative two. Take the engine case into a sauna and let it heat up for long enough so that steam escapes.
All right alternative 2 wasn't that serious.
 
 
Memory is fuzzy on this one but I recall, running pure antifreeze is a corrosion problem.
 
Marko
 
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy
Sent: Sunday, April 18, 2004 8:38 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Cooling Problem Identified

And I suggest that even using that drain plug is not enough.  For this tear-down I used that drain until it wouldn’t drain anymore.  Then I still got out copious amounts of coolant at various stages of disassembly.  I am not sure what the best procedure is. 

 

David Leonard

 

I'm thinking that using the drain, along with rocking the engine forward and back, would get most of the coolant out.  In your case, the rust is plugging up the holes, and making it hard to drain coolant that's above the rust level.  

 

Does anyone know of a good preservative that could be used to fill the coolant passages?  How about just straight anti-freeze?  You wouldn't want to use something like oil, since it would be hard to clean out.

 

Cheers,

Rusty 

 

 

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