All the discussions on running hot, leaning, shock cooling, etc., convinced me that I needed to learn more about light plane piston engines. I got the following book from amazon.com :
"Lightplane Maintenance : Aircraft Engine Operating Guide : Kas Thomas, Thomas Kas; Paperback; @ $18.95 each
Absolutely wonderful book. I’m posting this in “Flying Tips & Questions” instead of “Maintenance Issues” because it’s focused more on engine operation than engine maintenance (though there’s a lot maintenance info in there too).
I highly recommend it.