* Engine Design: The horsepower output of an engine depends on many factors besides displacement (cc), including:
* Engine Type: OHV (overhead valve) engines are generally more efficient than older side-valve designs, but the specific design still impacts power output.
* Compression Ratio: A higher compression ratio means more power.
* Carburetion/Fuel Injection: Modern fuel injection systems can optimize fuel delivery for better power.
* RPM Range: Snow blower engines are designed for specific RPM ranges, affecting power output.
* Manufacturer's Specifications: Horsepower is often a marketing term, and manufacturers may use different methods to calculate it.
Finding the HP:
* Consult the Troy-Bilt Manual: The most reliable source is the owner's manual for your specific Troy-Bilt snow blower model. It should list the horsepower rating.
* Check the Troy-Bilt Website: Look for the specific model on the Troy-Bilt website. They often list specifications.
* Contact Troy-Bilt Customer Service: They can provide the horsepower information for your model.
Keep in Mind:
* Even if you find the horsepower rating, it's important to understand it's a theoretical number. The actual power you experience in use can vary depending on factors like snow conditions, terrain, and engine maintenance.