Stant Superstat Premium Thermostat User Manual

Introduction

The Stant Superstat Premium Thermostat is an essential component of your vehicle's engine cooling system, designed to regulate engine temperature for optimal performance and efficiency. This thermostat features a unique design with a high venturi for maximum cooling capacity during high-temperature, high-load operation, and a 25% larger piston diameter for enhanced power compared to standard thermostats. Its stainless steel flange is burnished for stress relief and improved corrosion resistance, ensuring durability and reliability.

Figure 1: Angled view of the Stant Superstat Premium Thermostat, showcasing its stainless steel construction and spring mechanism.

Installation and Setup

Proper installation of the thermostat is crucial for its correct function and the overall health of your vehicle's engine. While this manual provides general guidance, it is highly recommended to consult your vehicle's specific service manual or seek professional assistance for installation.

General Installation Steps:

1. Safety First: Ensure the engine is completely cool before beginning any work. Disconnect the negative battery terminal.
2. Locate Thermostat Housing: Identify the thermostat housing, typically found at the end of the upper radiator hose where it connects to the engine.
3. Drain Coolant: Place a drain pan under the radiator and open the drain cock to drain a sufficient amount of coolant.
4. Remove Housing: Carefully remove the bolts securing the thermostat housing. Be prepared for additional coolant to spill.
5. Remove Old Thermostat: Extract the old thermostat and gasket. Clean the mating surfaces thoroughly to ensure a proper seal for the new gasket.
6. Install New Thermostat: Place the new Stant Superstat thermostat with a new gasket into the housing, ensuring it is oriented correctly according to your vehicle's specifications.
7. Reassemble: Reattach the thermostat housing and tighten bolts to the manufacturer's specified torque. Reconnect the radiator hose.
8. Refill Coolant: Refill the cooling system with the appropriate type and amount of coolant. Bleed any air from the system as per your vehicle's manual.
9. Test: Start the engine and monitor the temperature gauge. Check for leaks and ensure the engine reaches and maintains its normal operating temperature.

Figure 2: Bottom view of the thermostat, indicating the temperature rating (e.g., 180°F or 82°C) for proper selection.

Operating Principles

The Stant Superstat thermostat utilizes a unique v-notch, non-linear design that differs from conventional thermostats. Instead of continually opening and closing to achieve the proper operating temperature, the Superstat precisely meters the amount of coolant needed to maintain a stable operating temperature, thereby reducing cycling.

This v-notch design allows for a small initial flow of coolant. As the engine warms up, the v-notch gradually opens wider, progressively allowing more coolant into the system until the desired engine temperature is reached and maintained. This controlled flow helps prevent rapid temperature fluctuations and contributes to more consistent engine performance.

Figure 3: Diagram explaining the unique v-notch design of the Superstat thermostat, which meters coolant flow for stable temperature control.

Maintenance

While the Stant Superstat thermostat is designed for durability, regular maintenance of your vehicle's cooling system is essential to ensure its longevity and proper function.

• Coolant Level Check: Regularly check your coolant level and top it off as needed with the correct type of coolant specified by your vehicle manufacturer.
• Coolant Flush: Adhere to your vehicle manufacturer's recommended schedule for cooling system flushes and refills. Old or contaminated coolant can lead to corrosion and reduced thermostat efficiency.
• Hose and Clamp Inspection: Periodically inspect radiator hoses and hose clamps for signs of wear, cracks, or leaks. Replace any damaged components promptly.
• Temperature Gauge Monitoring: Pay attention to your vehicle's temperature gauge. Consistent readings outside the normal operating range may indicate a thermostat issue or other cooling system problem.

Troubleshooting

If you experience issues with your vehicle's engine temperature, the thermostat may be a contributing factor. Here are some common symptoms and potential causes:

Note: Always address cooling system issues promptly to prevent severe engine damage. If you are unsure about diagnosing or repairing a problem, it is best to consult a qualified automotive technician.

Specifications

Warranty Information

Specific warranty details for the Stant Superstat Premium Thermostat are typically provided at the point of purchase or within the product packaging. Please refer to the documentation included with your product for comprehensive warranty terms and conditions. For further inquiries, contact Stant customer service or your product retailer.

Customer Support

For technical assistance, product inquiries, or support regarding your Stant Superstat Premium Thermostat, please visit the official Stant website or contact their customer service department. Contact information can usually be found on the manufacturer's website or on the product packaging.