"G.R. Patterson III" wrote in message ...

. The only way the airframe could make a
difference is if a) they have the probe in only one cylinder and b) the
temperatures on the other cylinders are known to be significantly different.

And both of the above are the case. Unless you have an engine analyzer
the CHT is only measuring one cylinder. They usually try to put it in the
hottest cylinder (one of the back ones), but that varies based on how the
engine cooling air is designed on the airframe.

The oil temperature temps have an even greater variation.