Posted for "George Braly" <gwbraly@gami.com>:
 
 Well...  again,  every single IV-P's I have seen were very poorly baffled and
the fuel set up was improper.
 
 The result is, frankly,  a lousy engine installation that results in the
operational limitations you describe - - and which are wholly unnecessary.
 
 
 You guys should be having routine  full power climbs from sea level to 20,000
feet in 10 minutes and never see a CHT above 380F.
 
 Cruise should routinely be at 32 to 34" MP and 2300 to 2500 RPM and 70-90F
LOP, again with the hottest CHT under 380F.
 
 And, yes,  it can be done.   I took one of these "stock"  IV-P's and fixed
it.  It took a fair amount of time and effort, and a lot of experience to know
what to do and how.
 
 Regards,  George