Dayco PB81117SC Engine Harmonic Balancer

Overview of Dayco Supercharger Performance Balancer 8 Rib

The Dayco Supercharger Performance Balancer 8 Rib (Part Number PB81117SC) is engineered for precision and durability in high-performance applications. Designed specifically for select Cadillac, Chevrolet, and Pontiac models, this engine harmonic balancer supports optimal engine function and accessory drive efficiency.

• Compatible with Cadillac Caprice and CTS, Chevrolet Corvette, G8, and SS models
• 9 bolt holes for secure mounting
• Neutral counterweight balance with no counterweight
• Two integrated serpentine pulleys with 4 and 8 grooves respectively
• Steel outer ring for enhanced durability
• Includes installation instructions for proper setup
• Timing marks included for accurate engine timing

Product Line Details: Supercharger Performance Balancer 8 Rib

The Supercharger Performance Balancer 8 Rib line by Dayco is designed to meet the demands of supercharged engines requiring reliable harmonic balancing and accessory drive performance. This product line features balancers with multiple integrated serpentine pulleys, supporting 8-rib belt configurations commonly found in performance and supercharged setups. The PB81117SC model fits within this line, offering a steel outer ring and neutral counterweight balance to maintain engine smoothness without added counterweight mass.

Technical Specifications and Features

This harmonic balancer features a crank bore diameter of 1.481 inches (37.60 mm) and an overall outside diameter of 7.5 inches (190.50 mm). The balancer’s width measures 3.097 inches (78.65 mm), providing a robust profile for durability. It includes two serpentine pulleys: the first with 4 grooves and a diameter of 7.06 inches (179.3 mm), and the second with 8 grooves and a diameter of 7.327 inches (186.1 mm). The steel outer ring enhances wear resistance, while timing marks assist in precise engine timing adjustments. Note that hardware is not included, but installation instructions are provided.

Applications and Problem Solving

• Reduces engine vibration by providing harmonic balancing for supercharged engines
• Supports accessory drive systems with integrated serpentine pulleys
• Maintains accurate engine timing with included timing marks
• Prevents premature wear of crankshaft components by neutral counterweight design
• Compatible with specific Cadillac, Chevrolet, and Pontiac performance models requiring 8-rib belt configurations

Installation Notes and Tips

• Ensure compatibility with vehicle make and model before installation
• Use provided installation instructions for proper mounting and alignment
• Verify timing marks alignment during installation for accurate engine timing
• Torque bolts to manufacturer specifications using the 9 bolt holes
• Hardware is not included; source appropriate bolts and tools separately

Quality Assurance and Warranty

Dayco’s Supercharger Performance Balancer 8 Rib line is manufactured to meet OEM standards for durability and performance. The PB81117SC part undergoes rigorous quality control to ensure reliable operation in demanding engine environments. Installation instructions are included to support proper fitment and function. Warranty details should be confirmed with the original equipment manufacturer or distributor.