I think the temp gun is controversy tool. Some can use it for good reason others will upset their self. As for temperatures on engines it is very common for them to be 300 degrees plus. Most go kart racers tune their air-cooled engines by head temperature. They adjust the high speed needle as they go around the track and try to maintain 300 degrees. Engines will build less carbon and will perform admirably at 300 degrees. Tune it to pull the hardest on the up-line and quit paying so much attention to the actual temperature. If the engine will richen up and burble its not to hot.


Keith
BME