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Date: Tue, 22 Mar 2005 18:41:23 -0600
From: Charlie England <ceengland@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: side housing/rotor questions
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Russell Duffy wrote:

> Welcome Jeff,
>
> The rotor housings looked great.  How does the coolant get into
> the rotor housings once the engine is pulled? 
>
> Unless the coolant is poured, or spilled into the ports, it shouldn't 
> be able to get into the rotor housings.  If the combustion O-ring was 
> bad, coolant could get from the cooling passages into the rotor 
> housing.  Take a close look at the O-ring grooves on all the side 
> housings.  Was it in both housings, or just one?   Was the intake 
> manifold on the engine when you got it?  If not, maybe someone just 
> got careless when they removed it, and managed to dump some coolant in 
> the engine.   
>
> I remember a month or so
> ago people talking about newly rebuilt engines doing this.  How does
> that happen?
>
> Not exactly.  We were talking about coolant in the coolant passages.  
> If this sits long enough, it will rust the cooling passages.  It 
> shouldn't be in the rotor housing though.

snipped

If the engine has been badly overheated, there will likely be water in 
the rotor housings. (wish I didn't know about that...)

Charlie