For mild street engines, stock valve springs are more than adequate. But if you've screwed in a big bumpstick for strip-banging or banzai runnin', then pay attention. Our plan was simple: Install a ...

An engine's valvesprings play a critical role in its performance, yet those incorrectly chosen for a given application can cause hobbyists to unknowingly point blame in another direction if an engine ...

Compression springs are the most recognizable spring and are intended to oppose compaction in the direction of the axis. The spring is extended at rest; shortened and stored with energy when a load is ...