I ran across some info on another Kubota engine while doing some reading regarding the CCV/PCV and turbocharging. These particular folks were suggesting to remove a steel retainer and spring from the CCV/PCV and then vent to the intake.
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Now, I’m not sure the D1703 has this assembly (I haven’t checked yet) but, I assume it does.
Assuming that the L2501 has the steel retainer and spring, I would imagine that as crankcase pressure builds, that retainer/spring opens and the gasses are released through the CCV/PCV hose and into the intake manifold (or inlet pipe w/ Turbo). On my Turbo System, I’m re-routing the CCV/PCV gasses to the Turbo inlet pipe. A re-route, which I have done, should be all that’s needed, correct?
Why would these folks suggest removing it? What’s the purpose?
Thinking out loud...
Do they simply want ALL excess crankcase gasses to flow through immediately? Or, do they believe the retainer/spring is an obstruction that is allowing more pressure than they wish?
I don't know.