Distributor Weights - Each

The Distributor Weights from MSD IGNITION are precision-engineered mechanical components designed specifically for mechanical ignition distributors. These weights are essential for tuning strategies that require repeatable, RPM-sensitive timing control without electronic intervention. Ideal for classic muscle cars, vintage race engines, and high-output street machines, they directly influence engine performance across the RPM range.

MSD's distributor weights function within the centrifugal advance mechanism of mechanical distributors. They utilize calibrated mass to modulate spark advance based on engine speed. As RPM increases, centrifugal force pushes the weights outward, progressively advancing the ignition timing to meet combustion demands at higher speeds. The precise weight specification determines the advance curve slope and breakpoint, allowing for tailored performance adjustments.

Engine builders and mechanics typically install these distributor weights when replacing worn advance mechanisms. They are particularly beneficial for carbureted engines and vintage builds where reliability and predictable timing behavior are crucial. Each order includes one distributor weight, making it easy to replace or upgrade as needed for optimal engine performance.