Located in that head are two cam-operated valves: an intake valve which when open can admit fresh air-fuel mixture to the cylinder, and an exhaust valve which when open releases spent combustion gas ...

The intake and exhaust valves are larger and the cams have been replaced, among other tweaks. It should rev even higher thanks to a rebalanced crankshaft and forged connecting rods. Ford is still ...

The positive crankcase ventilation valve releases exhaust gas and unburned fuel from the engine block into the intake manifold. All engines allow some exhaust gases, unburned fuel and oil to ...

Premium touches that are similar include forged-steel crankshafts, 10.5:1 compression ratio, and large 2.165-inch diameter intake and 1.670-inch diameter exhaust valves. The 7.3L Megazilla V8 gets ...

At only 120 lbs, the new V2 is the lightest twin-cylinder in Ducati’s history, featuring variable valve timing and ...

Ford agrees to an extended 10-year warranty following a two-year NHTSA investigation into faulty EcoBoost engine valves ...