Michael 182 wrote:

6) The turbo is, of course, a normalizer. I get 31" on climbout up to
about 8,000 feet. 28" at about 10,000. 17" at FL180. Obviously
different numbers in summer and winter, but that's a general idea.

Interesting. My Bonanza V35 is equipped with a Tornado Alley
turbo-normalized IO-520 and MP remains at 29.92 (top of the green arc) from
sea level to roughly FL200. Above this altitude, MP begins to drop off.

I am not a qualified mechanic, nor do I have years and years of aviation
experience in many different aircraft, but the idea of losing MP at 8,000
feet in a turbo-equipped aircraft just doesn't seem right to me.

--
Peter