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 ...

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 ...

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 ...

There are a hundred things to remember to do correctly when you are building or re-building an engine for your ride. Of all those things, the correct valvetrain setup is important, and part of that is ...

国内海外問わず多くのバイク用パーツを取り扱うネクサスから、100％日本製にこだわるキャブレターパーツブランドNAPCOの「エアカットバルブ With SPRING、O-RING SET」が発売された。 消耗部品ともいえるキャブレターのゴムパッキン類だが、この製品は購入し ...

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 ...

A STUDY of the influence of vibration on valve-springs reveals two possible ways in which a valve-spring can vibrate: First, when the frequency of the forced vibration is low, the force tending to ...

Many gearheads buy their cylinder heads fully assembled and don’t have to sweat making sure all of the various parts are set up correctly. But for those that build their own, or that just need to swap ...