* Engine Type: Different engine designs (e.g., radial, opposed, V-type) and manufacturers will have different operating temperature ranges.
* Engine Load: Higher power settings (e.g., climb, takeoff) result in significantly higher CHTs.
* Ambient Temperature: Hotter outside air temperatures lead to higher CHTs.
* Altitude: CHTs tend to be lower at higher altitudes due to the cooler ambient air.
* Fuel/Air Mixture: A lean mixture can lead to higher CHTs, while a rich mixture generally results in lower CHTs (though too rich can cause other problems).
* Engine Condition: A well-maintained engine will typically operate within a narrower and more optimal temperature range than one needing maintenance.
Instead of a specific temperature, it's more accurate to describe the operating *range* for CHT. This range is usually specified in the aircraft's Pilot Operating Handbook (POH) or the engine's maintenance manual. Exceeding the maximum CHT for a prolonged period can cause serious engine damage. Typically, the maximum CHT is in the range of 400-500°F (200-260°C), but this varies greatly depending on the engine.
In short, you need to consult the documentation for the *specific* aircraft and engine to find the correct CHT operating limits.
