YS 91AC

[Larry Caldwell]

Ken, Check with these folks:  http://www.ysperformance.com/

Larry Caldwell

Ken Thompson wrote:
> Hi all,
>  
> I have a YS-91AC that came in a plane I aquired last weekend.  On the 
> 16th flight I lost the motor about 2 minutes into my routine.  After a 
> safe, and pretty nice landing, I might add, I brought it back to the 
> pits to see what happened.  I could turn the prop by hand with almost no 
> back-pressure. 
> I pulled the motor out when I got home and checked it out the best I 
> know how.  Pulling off the backplate I see the connecting rod and 
> piston seem to be OK and the valves seem to be moving like they're 
> supposed to.  I don't know a lot about these engines, as this is the 
> first YS I've run in a plane. 
>  
> What I need to know is where is the best place to send the motor to be 
> checked out and re-built.  I don't want it just patched up, I would like 
> it done right, but a quick turn around.
>  
> Asking too much?
>  
> Thanks in advance,
>  
> Ken Thompson
>  
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