Mailing List flyrotary@lancaironline.net Message #30114
From: Russell Duffy <russell.duffy@gmail.com>
Subject: RE: [FlyRotary] Melted Rotor housing
Date: Sat, 11 Feb 2006 14:05:22 -0600
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
Here is a picture of the melted rotor housing. 
 
Wow!  I'd say you got your money's worth out of that one.  Damn...  
 
As for the blued end housings, I'll be interested to hear what the "seen it all" folks have to say about that.  Some dark spots can be considered normal, but knowing what the engine went throught, I'd be reluctant to use them again.  After my oil out, I had dark areas that initially looked OK to me, but I think it was Leon who pointed out the likelyhood of cracks from the heat.  Sure enough, on close examination, there were some small cracks.  That was a different problem, so take the comment for what (little) it's worth. 
 
If the rotor housings got crushed as you say, are you sure the rotors weren't scuffing on the side housings?  I'd presume that's what caused the overheated areas on the side housings.  Did all the rotor seals come out easily, grooves look good, etc?  Maybe the rotors are OK.   
 
I hate to say it, but you might be better off starting with a fresh engine. 
 
Good luck,
Rusty
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