PCV Question
No they don't run a pcv valve. But they DO run dry sump oil systems that maintain a negative pressure in the crankcase that help with ring seal (which reduces blow-by) & that helps to evacuate the crankcase gases.
Ordinary breathers don't work in 2 directions, at least not very well because they can't regulate pressure, only vent it after the pressure builds up in the crankcase since there is nothing to create a negative pressure flow. They are designed to allow air to flow inward to the engine.
Even the engine shown needs some sort of evacuation system on it to perform at its best. It doesn't have to be a "PCV valve" system, but some sort of system. A lot of racers use an air pump or check valves on the headers connected to the cranckcase to rid the gases.
A PCV, affectionately known as a "Pollution Control Valve", LOL, was designed as a way to recirculate unburned gases. Does it or may it have some benefits in other ways, yes.
A breather works in BOTH directions. Just like your body breathing, it's an in and out operation. You think this engine needs a PCV.
How many cup cars, sprint/wing cars, pro stock, super stock or stock eliminator cars run PCV's? Don't see many of those pushing out gaskets... They don't run them because it fouls up the intake charge with second hand unburned garbage.
If you don't run a PCV, make sure you have plenty of breather area to sufficiently vent the crankcase.
No they don't run a pcv valve. But they DO run dry sump oil systems that maintain a negative pressure in the crankcase that help with ring seal (which reduces blow-by) & that helps to evacuate the crankcase gases.
Ordinary breathers don't work in 2 directions, at least not very well because they can't regulate pressure, only vent it after the pressure builds up in the crankcase since there is nothing to create a negative pressure flow. They are designed to allow air to flow inward to the engine.
Even the engine shown needs some sort of evacuation system on it to perform at its best. It doesn't have to be a "PCV valve" system, but some sort of system. A lot of racers use an air pump or check valves on the headers connected to the cranckcase to rid the gases.