wrote:
If you go to your Lycoming Distributor, they will be happy to
give you a copy of the Lycoming Flyer Key Reprints. It contains
numerous articles on all aspects of operation of their engines, and a
lot of it could apply to operation of other brands, too. Interesting
stuff. For free.

IIRC, the key reprints are also available for download on Lycoming's
website.

John Galban=====N4BQ (PA28-180)