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From: Bulent Aliev <atlasyts@bellsouth.net>
Subject: Re: [FlyRotary] Re: Spark Plug Fouling and Temperature
Date: Fri, 24 Nov 2006 18:21:54 -0500
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Lynn,
I'm not sure if you recommend the Autolite AR2592 just for the  
Leading or for all four?
Buly
On Nov 22, 2006, at 9:04 PM, Lehanover@aol.com wrote:

> In a message dated 11/22/2006 8:56:30 P.M. Eastern Standard Time,  
> eanderson@carolina.rr.com writes:
> Its interesting, we I use 100LL I usually get 25 hours on a set of  
> plugs.  I wonder what factors might make the difference between  
> your time interval and mine - "Plugs Up"?.  I have not run across  
> any chart that indicated anything other than a plug digit which  
> indicated a "hotter" or a "colder version".  I think I may try   
> hotter plugs and see if they make any difference.
>
> Ed
> Look at an old rotor housing to see if there are tiny radial cracks  
> around the trailing hole.
> This indicates an overheated spark plug.
>
> That 25 hours seems acceptable to me. I would try Autolite AR2592.  
> Very cold heat range, good for racing. Thicker ground electrode.  
> Order through Autozone for about $7.00 a box of 4.