To achieve the proper valve spring height while using the minimum amount of valve spring shims can be challenging when working with applications that use other than stock components. There has never ...

Fittings such as these, for connecting a compressed air line to the spark plug hole for valve support, are available at most auto parts stores. Occasionally it is necessary or desirable to inspect or ...

If the cylinder heads are on the engine, you will need to add air pressure to the cylinder to hold the valves in place. Our example is the Craftsman 47089 compression test kit using the 14mm long ...

Worldwide, Honda enthusiasts invest hundreds, if not thousands of dollars on their powerplants to extract the utmost in power and reliability. Whether they opt to keep their Honda naturally aspirated, ...

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Clearance is all in the details. Our friends at Lunati spell it out. There’s more to valve springs than meets the eye at surface level. For a simple coil of wire, valve springs do an incredible job of ...

Choosing the right valve spring for your engine is essential to ensuring optimal performance, reliability, and longevity. Valve springs are often overlooked, but they play a crucial role in ...

Those wound-up pieces of high-tensile steel under your rocker arms work so hard closing your valves over millions of cycles that they could probably use a replacement right about now. We're talking ...