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 ...

Alexsander Koprivc Introduces the Zwick-Roell Multi-Channel Spring-Testing System at the 21st Annual TextXpo 2012. Multi-channel measuring platforms allow the line of action of force of compression ...

Performance is all about pushing the envelope. As camshafts become more aggressive in the search for more power, these lobes make life increasingly difficult for valvesprings. This may seem like a ...