Video: Why Do Rocker Arms Break? (And How to Prevent Premature Rocker Arm Failure)

From extreme heat cycles to the constant hammering from pushrods and valves, the rocker arms in your engine’s valvetrain put up with a lot.

That also means that they won’t last long if you don’t install them properly the first time.

So the valvetrain experts at Scorpion Racing Products made this in-depth video to show you why rocker arms can prematurely fail. And better yet, they’ll give you some must-know techniques to ensure your rocker arms live a long, happy life under your valve covers.

Scorpion has been in the performance engine game for decades, so its techs and engineers are living encyclopedias of valvetrain knowledge. More importantly, Scorpion makes its rockers in the USA and has cranked out literal truckloads of some of the best rocker arms on the planet.

Suffice it to say, at almost ten minutes long, this video doesn’t skimp on the details of proper rocker arm care and feeding. If you’re an engine builder or just enjoying tinkering with the valvetrain in your cylinder heads (for racing or durability) consider this video a must-watch.