During one of our never-ending technical discussions, Jim Grubbs at Jim Grubbs Motorsports (JGM) suggested that we take a look at the flow difference between 30- and 45-degree valve seats. While ...

Open heart surgery for aortic or mitral valve repair or replacement has traditionally required opening the patient’s chest through their sternum (breast bone). In many cases today, a minimally ...

'Breathe in . . . breathe out. Simple respiration is what keeps us alive, and your engine is no different. On a normally aspirated engine, atmospheric pressure pushes air in through the carb, intake ...

Misshapen or damaged heart valves often need repair. That repair can be done with a procedure called annuloplasty. An annuloplasty can reshape or reinforce the ring (annulus) that surrounds a valve in ...