The improved flow of exhaust gas to the turbocharger results in quick response and powerful torque buildup.
Pro engine builder Steve Morris explains the procedures to measure piston-to-valve clearance.
Victory manufactures titanium, inconel and stainless-steel intake and exhaust valves and other valvetrain components.
Carbon deposits can be formed by varying cylinder temperatures. This video is sponsored by Rislone.
Pushrods transfer and redirect the upward motion of the lifters to the rocker arms, so they’re subjected to severe forces.
Not using the right components and the right tolerances in the right application can cause havoc.
Andrew Markel details a case study involving a Honda Accord whose valvetrain displayed a timing malfunction.
Andrew Markel explains how improper temperature control in the engine can lead to oil sludging in the valvetrain.
Valvetrain components such as lifters, pushrods, rockers and valve springs are often replaced when rebuilding stock engines. Worn rocker arms and lifters should not be reused to prevent failures down the road. If you’re installing a new flat tappet cam, new lifters are a must. Any pushrods that are not straight must also be replaced, along with high-mileage valve springs that have weakened with age.