Running hot

It's essential to validate the installation of your engine to ensure you're meeting all operating parameters and staying within the maximum temperature and pressure limits. Each section of the Rotax installation manual provides guidance on how to validate your systems, including coolant, oil, fuel, electrical, and exhaust.

Performing hot weather testing is crucial to ensure that the engine cowl design allows for proper airflow over heat-sensitive components and facilitates adequate heat escape to prevent "heat soak." This testing is also vital for confirming proper airflow through the radiators.

If your aircraft is factory-built or if you've purchased a "firewall-forward package," it's important to request testing and validation data that demonstrates compliance with the Rotax installation manual. If the manufacturer cannot provide this information, you will need to undertake the significant and challenging task of validating the installation yourself. This process may include making changes and adjustments to the design to ensure it is within all parameters.