Race cars, particularly in Mountain Motor Pro Stock (MMPS) racing, require extensive turnaround work between rounds. While simpler setups, like those for bracket racers, may only need fuel and battery attention, MMPS teams face a longer and more detailed checklist to keep their highly optimized machines competitive. Successful racing hinges as much on pit work as it does on performance on the track.

Key tasks during turnarounds include comprehensive engine inspections and valvetrain maintenance. Crew members meticulously check the engine’s top end, monitoring valve lash, valve spring pressure, and the overall engine condition to avert major failures in subsequent runs.

Furthermore, transmission and clutch systems receive significant attention. The crew disassembles the transmission and clutch for cleaning and inspection, ensuring all components meet performance standards. They adjust or change transmission gear ratios as necessary, and clutch discs are evaluated for wear before reinstallation.

Simultaneously, data from previous runs is analyzed alongside current weather and track conditions to inform tuning adjustments. After making necessary changes, the car is reassembled and prepared for its next quarter-mile run.

For those interested in the detailed processes that keep these high-revving machines competitive, the latest episode of Dragzine’s Tech Inspection features John DeFlorian, who provides an in-depth look at the MMPS turnaround process and the intricate maintenance required.



Source: www.dragzine.com