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From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Re: Plasma III on Hi Compression Engines - Firewall
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Posted for "George Braly" <gwbraly@gami.com>:

  Craig,
  
  Having done a full blown  FAA  type certificate block engine run one of 
these
engines  - - -   with internal combustion pressure sensors monitoring the
combustion pressures, I would not be comfortable with the timing set at 25d
BTDC for a 10:1 CR experimental version of the 8.7:1 Lycoming engine.
  
  Regards,  George

"""
  I'm willing to bet at a 5 deg retard you are giving up power and fuel
economy.  Unless you are detonation sensitive, I would expect no more than a 2
deg retard on a 27 deg baseline for a 10 to 1 CR motor.  I would be happy with
the 3 deg shift.
"""