Flat tappets place a unique demand on the engine and engine oil, as this is a high heat, high pressure, high shear stress location of the engine. Without an oil film, you’d have the quickly moving ...

It's been all the talk on internet forums, club meeting hangouts, and in enthusiast garages across the nation—the loss of zinc and other protective "barrier" chemicals in modern oil damaging ...

One of the most satisfying aspects of engine building is selecting the parts that go into the build, and coming up with a combination that is right on target for the intended application. When that ...

On engines equipped with hydraulic tappets, zero lash at maximum tappet plunger rise can be determined by rotating the pushrod with your fingertips while slowly turning the lash adjusting nut. The ...

The delicate relationship between the tappet and pushrod in a V-8 engine has not advanced far in our lifetime. While other cam technologies have taken the spotlight when it comes to making the power, ...