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 ...

As the old saying goes, an ounce of prevention is worth a pound of cure. This is especially true when replacing a thermostatic expansion valve (TXV). Always take the necessary precautions when ...

Because of the dynamic nature of the equation, camshafts are one of the most misunderstood performance components on any motor. This is especially the case on the overhead-cam modular 4.6L Ford motor.

With the short block assembled for our 383 supercharged project motor, it's time to shift our attention once again; this time to the heads and valvetrain. Like the rotating assembly, when it came to ...

A small addition to your shower head can save you time, money, and water: a simple shutoff valve can toggle the water flow off and on without undoing your carefully-calibrated mix of hot and cold on ...

The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide expert advice on some of the most pressing challenges facing the nation and world. Our ...