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Month: May 2025

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close-up of the rocker arms, valve springs, and valve stems in an engine

What Is a Dual Overhead Cam (DOHC) and How Does It Work?

You’ve seen “DOHC” on an engine spec sheet or heard it mentioned at a parts counter—but if you’ve never really looked into how engines are built, it probably sounds like alphabet soup. Spoiler: it’s actually pretty straightforward, and once you get it, you’ll start to see

engine with exposed camshaft assembly

Causes of Broken Camshaft Bolts and How to Prevent Failure

If you’ve ever had a camshaft bolt snap or shear off, you know the damage isn’t just inconvenient—it can be catastrophic. Whether you’re a shop owner, a DIY diesel tech, or just trying to figure out why your camshaft bolts failed, it’s worth taking a closer