JRSC 3.0-Inch High-Boost Pulley

The 1320 Performance 3.0-inch pulley is engineered to enhance the performance of Jackson Racing Supercharger (JRSC) systems, specifically for B-series engines in Honda and Acura vehicles. This high-boost pulley is crafted from Aircraft 6061 T6 billet aluminum for durability and performance. Its innovative design incorporates raised sides on both the inner and outer edges of the pulley. This feature is crucial for improved belt retention, effectively reducing instances of belt jumping or the belt coming off track, especially under aggressive driving conditions. Testing indicates that this pulley design can endure over 30 full-throttle races, significantly outperforming stock pulleys that may only last 5-7 races before experiencing belt slippage or derailment. Fitment includes a range of popular models: 1991-2001 Acura Integra LS/GSR, 1997-2001 Acura Integra Type-R/SI, and the 1997-2001 Honda CR-V equipped with a B20 engine. For the B20 engine, be aware that a larger crank pulley is typically used, which will result in higher boost levels. The manufacturer estimates approximately 10 PSI of boost on a standard GSR engine setup with original crank pulley at sea level, though actual boost levels can vary based on engine setup, crank pulley size, alternator pulley, and environmental factors like temperature and elevation. Key specifications include a supercharger shaft diameter of 0.64" (~5/8") and a pulley offset measurement of 0.8" (20.33mm). It is important for buyers to note that Jackson Racing produced a limited number of supercharger kits with a slightly longer pulley offset. Therefore, it is strongly recommended to double-check your existing pulley's offset before making a purchase to ensure compatibility.