NHRA Pro Stock cars are finely tuned machines designed for optimal quarter-mile performance, with the clutch being a critical component. After each run, the clutch is removed and its discs undergo specialized servicing. They are placed on a cutting machine to remove any glaze, with each disc receiving three passes to ensure proper engagement when the driver releases the pedal. The cuts made are minimal to prolong the disc’s lifespan.

Pro Stock cars typically use the same clutch pack throughout an entire weekend, unlike nitro cars, which replace their packs after each run. Each disc’s thickness is measured and recorded to monitor wear and anticipate necessary clutch adjustments based on track conditions.

In a video presented by Kelly Murphy from Elite Motorsports, viewers learn about the clutch cutting process for an NHRA Pro Stock car. He explains the setup of the cutting machine, the criteria he assesses during the cuts, and the direct impact this maintenance has on the vehicle’s performance. This meticulous attention to detail ensures that the car maintains its competitive edge on the track, highlighting the crucial balance between maintenance and race-day strategy in the world of professional drag racing.



Source: www.dragzine.com