When a camshaft wears out, most people understand it needs replacing.
But one of the most common questions we get is:
“Why replace the rockers as well?”
It’s a fair question — and an important one.
How Cam and Rocker Wear Happens
Your camshaft and rocker rollers work together constantly.
As the cam rotates, it pushes against the roller on the rocker. Over time, the hard surface on the cam begins to wear.
But it doesn’t wear alone.
The roller on the rocker follows the exact same wear pattern.
That means both components are worn to match each other.
What Happens If You Don’t Replace the Rockers
If you install a new camshaft but leave the old rockers in place, you’re introducing a worn surface onto a brand new component.
Best case:
- The rocker continues to wear
- Performance is reduced
Worst case:
- The worn roller damages the new cam
- Accelerated wear occurs
- You’re back in the engine far sooner than expected
That worn roller effectively acts like sandpaper, grinding against the new cam every time the engine runs.
Why We Recommend Replacing Both
When replacing a camshaft, we recommend replacing the rockers at the same time.
It ensures:
- Proper contact surfaces
- Even wear patterns
- Longer component life
- Better overall engine performance
It also saves you from paying for the same job twice.
The Takeaway
Camshafts and rocker rollers wear together — so they should be replaced together.
It might seem like an added cost in the moment, but it’s what protects your investment and ensures the job is done properly.
📍 Webbie’s Mechanical
Do it once. Do it properly.
