Runout Checker

The Runout Checker by ALLSTAR PERFORMANCE is an essential precision tool designed for engine builders, performance mechanics, and serious automotive enthusiasts who demand accuracy in rotating component inspection. This tool is particularly useful for tasks such as blueprinting a race engine, verifying crankshaft straightness, and validating rotor and pulley concentricity. Accurate runout measurement is crucial for reliable high-RPM operation and longevity.

This instrument functions by establishing a fixed reference point against rotating geometry, measuring radial and axial deviation with dial indicator precision. The ALLSTAR PERFORMANCE design ensures repeatable, accurate readings to pinpoint wobble and lateral movement that may not be visible during a visual inspection. Its compact size of 3.95 × 3.8 × 18.3 inches and weight of 3.8 lbs allows for easy mounting and use across various shop environments.

This runout checker is invaluable when assembling stroker engines, verifying crankshaft integrity after machine work, or validating harmonic balancer installation. It is compatible with a range of engine types, including small-block and big-block V8s, inline engines, and four-cylinder engines, making it a versatile tool for both professional fabrication shops and dedicated home builders.