Mailing List flyrotary@lancaironline.net Message #32027
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Hotter spark plugs
Date: Tue, 30 May 2006 16:34:31 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Never tried them, Perry.  I also run the standard 7/9 and get approx 25-30 hour before lead fouling.  I'll have to see if any of the auto parts stores stock them.  Probably not cheap.
 
Ed
 
----- Original Message -----
From: Perry Mick
Sent: Tuesday, May 30, 2006 2:58 PM
Subject: [FlyRotary] Hotter spark plugs

Learn something new every day...
 
Through a little googling I found out there are hotter plugs available for the RX-7. Standard 2nd gen plugs are BUR7EQ leading and BUR9EQ trailing. However these are considered "cold" for highway driving. For street the "hot" plugs are
BUR6EQ leading and BUR8EQ trailing.
 
See the Mazdatrix website.
 
Has anyone run the BUR6EQ/BUR8EQ combination in an airplane? I've run the standard 7/9 combo for years now, except I tried the platinum versions once, hoping for longer life (didn't happen). I expect the hotter plugs may have shorter life, but might do better burning through 100LL deposits?
 
Perry
 
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