Mailing List flyrotary@lancaironline.net Message #11951
From: Steve Brooks <prvt_pilot@yahoo.com>
Subject: RE: [FlyRotary] Re: Low power 13B Operation
Date: Tue, 5 Oct 2004 20:25:20 -0400
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
John,
I would second Dave's comment.  I rebuilt my engine, and was surprised at how easy it was.  Now if I can just keep from cooking it.
 
Steve Brooks
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of DaveLeonard
Sent: Tuesday, October 05, 2004 8:15 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Low power 13B Operation

John, really sorry to hear that.
 
More like a major set back.  I suggest you re-build it your self.   Can be done by a first timer in a few days.  Since you won't have much cleaning to do and can re-use most of the apex seals, it will cost only a few hundred bucks in gaskets, supplies, tools and a single replacement seal.
 
If you want, you can ship your new turbo to me for save keeping (heck, you're only going to destroy it too).  :-)
 
Dave Leonard
 
Well, they say a picture is worth 1000 words.
In this case the picture is worth about 1000 dollars. :(
 
The compression tester prints a tape showing the compression pulses. On rotor 2 it looks fine. 3 peaks for every cycle. On rotor 1 there's one peak, one tiny blip, then nothing. I took off the exhaust manifold and, sure enough, two of the seals are shiny and spring back about 1/16 inch when you press them (hard). The other seal is intact, but not shiny and only springs back maybe 1/32 when pushed. It IS moving, so it's not a stuck seal - sounds like the side seals are gone. We'll know more when the Mazda guy gets the engine comes apart......
 
John (just a minor set back)
 
 
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