PCV System delete

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
boostin300
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Car: 1991 300zxTT ------ Current project
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Hi all, I've just pulled my plenum and have done some associated deletes, (Coolant hard lines, PCV fittings, EGR)

I am wondering if i can just delete the PCV fittings and hoses, that were associated with the plenum and leave the rest. (hoses in/out of crankcase to intake pipe)
Or do i need to go the whole way and do a full delete w/catchcan.

Thanks in advance!


amc49
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'17 Nissan Altima

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Anything other than a complete delete is often problematic, many not understanding 100% fully how PCV works. It is a double-ended system and flows both ways.

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evildky
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The gases have to go somewhere, be it into the intake pipes or a catch can. Being a metered air system ideally it's routed back into the intake tract. If you route to t catch can you can either route from the catch can into the intake or vent to atmosphere and plug the inlets int he intake piping.


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