PCV valve hose goes???

[oldbee]

excellent analogy.......my buddy's ex wife could vacuum an entire fleet

And “we” know this how? !!

 

[RR Fan Dan]

Page 5

 

[Unkle Krusty]

I bought a new PCV valve. The rubber grommet in tne rocker cover was getting a bit hard. So I had to pound on the valve to get it in place. My left hand has just got rid of the scar tissue from where I whacked it with the hammer.
My Tukvan also has a long tube entering the forward part of the same rocker cover. This tube is for adding oil from the front. I worked on a leveraging plan for this tube. This approach is more user friendly for my left hand.

 

[68 Sport Satellite]

the pcv valve meters the amount of air that gets pulled through the engine and into the intake......it's a constant vacuum leak, the carb is jetted to compensate

so my own motor has the PCV valve on one side and a closed oil filler cap on the other side. Please note that my engine is not stock - it's a 451 built by a very knowledgeable mopar engine builder and the motor runs great. However, none of the engine experts who have helped me from time to time on my engine have ever commented on lack of a breather cap. The engine is already dyno-tuned and running well. Sounds like I should replace my closed oil filler cap with a breather oil filler cap and re-tune the motor?

Thanks OP for posting your original question, because I'm learning something new about my motor that I didn't know.

 

[RemCharger]

so my own motor has the PCV valve on one side and a closed oil filler cap on the other side. Please note that my engine is not stock - it's a 451 built by a very knowledgeable mopar engine builder and the motor runs great. However, none of the engine experts who have helped me from time to time on my engine have ever commented on lack of a breather cap. The engine is already dyno-tuned and running well. Sounds like I should replace my closed oil filler cap with a breather oil filler cap and re-tune the motor?

Thanks OP for posting your original question, because I'm learning something new about my motor that I didn't know.

Yes, you should. Sometimes the way yours is setup, you can hear squealing as the air is being sucked past the seals. = no good.
Shouldn't require " retuning"

 

[not so famous bob]

Yes, you should. Sometimes the way yours is setup, you can hear squealing as the air is being sucked past the seals. = no good.
Shouldn't require " retuning"

PVC on one side /breather on the other is old technology that worked , but new cars are completely sealed , and have great engine vacuum ...