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From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Re: Running TSIO-550 at High Power
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Date: Fri, 01 Jul 2005 15:08:04 -0400
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Posted for "Lewis III, Charles S." <CSLEWIS@stoel.com>:

  Walter:
  
  You said:
  
  <1)  It's NA, not TC'd.>
  
  <2)  Did you mean a TCM IO-550N  or a Lyc IO-540???>
  
  Right -- naturally aspirated.  I thought that was what Rob originally
referred to when he said "but that's for 8.5:1 heads, and I think the TSIO is
7.5:1... (with everyone now running 10:1 NA)"
  
  My engine is a TCM IO-550.
  
  Carl