"Bullwinkle, that trick never works. Why don't you figure out how to make hydraulic roller lifters survive big spring pressure." "Huh?" Like Bullwinkle, hydraulic roller lifters get no respect. It ...

The "battle of the camshaft lifters" has been going on for years. Each design has its proponents. Those in favor of hydraulic cams cite reduced maintenance and claim that equivalently ground ...

With the availability and efficiency of roller camshafts it’s a no-brainer to use a hydraulic roller setup even on the simplest of engine combinations. The roller lifters take a lot of load off of the ...

Picking the right valvetrain for your engine can be a daunting task. Solid flat tappet, hydraulic flat tappet, solid roller, hydraulic roller; these are the choices, made even more difficult due to ...