Originally Posted by
ahramin
Checking the certification requirements that might be applicable to a similarly equipped certified aircraft it requires the carb heat to be able of generating a 100°F rise. I've never seen a system that can deliver this much heat but we have a carb t° probe on the way and we'll see what it can do.
The carb heat on a normally aspirated B model Aztec can give a 120°F rise. I've used that ability in icing conditions (long ago).