BOSTON, MA—Fracturing a surgical aortic valve to facilitate valve-in-valve (ViV) TAVI with the Sapien 3 or Ultra device (Edwards Lifesciences) is associated with a higher risk of in-hospital mortality ...

'Everybody wants to talk about bottom-of-the-page camshafts with calendar-length duration figures and valve lifts approaching 31/44 inch. With all this thinly veiled aggression going on in the ...

Back in September 2020, GM quietly admitted that small-block V8s suffer from “possible broken valve springs.” According to a technical service bulletin from the biggest of the Big Three in Detroit, ...

Kia's largest internal combustion-engined crossover has been hit with a safety recall for a problem that increases the risk of a fire. According to Kia America, the V6 engine's valve springs may have ...

Fittings such as these, for connecting a compressed air line to the spark plug hole for valve support, are available at most auto parts stores. Occasionally it is necessary or desirable to inspect or ...

Those wound-up pieces of high-tensile steel under your rocker arms work so hard closing your valves over millions of cycles that they could probably use a replacement right about now. We're talking ...

Although the basic purpose of a valvespring is to close the valve while also ensuring that the valvetrain stays in contact with the cam lobe, it must perform this feat under grueling conditions that ...