Put simply, the crankcase breather is a system designed to vent gases out of an engine's crankcase safely. The crankcase is a sealed, lower half of an engine that houses the crankshaft, which is what ...

Venting a typical V-8 engine isn't a complex affair. A breather atop each valve cover is usually all that's needed. Of course, replacing one with a PCV valve to introduce a bit of vacuum into the ...

Indeed, there are some very real benefits to be gained from using natural engine vacuums (in either the intake manifold or the header collectors) to evacuate the crankcase, but unfortunately, many ...