What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Do I Need A PCV?

I dont even use valve covers, why obstruct air flow?

As far as oil in the breather for valve covers with no baffle, I saw this. I tried it, seems ok
 
Not sure what you mean. How would you protect the valve train and keep dirt out , oil in with out valve covers?
The rubber grommet idea is ok definitely better than straight open
 
Wes Harden said:
Did you plumb to valve cover, or have an old road draft tube block ...?
Most valve covers only have 1 hole and maybe an oil fill.
Click to expand...

I had cheap Chines Jegs "in house" brand aftermarket chrome valve covers. the right side valve cover had a standard PCV grommet size hole, and the left side valve cover had the oil fill hole for an oil cap and another larger hole for a breather. Mr Gasket makes a reduced size grommet designed for valve cover breather cap size holes so you can plug a PCV valve into it instead of a breather cap.
 
I understood the pcv in both valve cover part. I want know how you got fresh air into the crank case?
 
I did the same thing as @1ton did on a SBC a long time ago.... I could hear the suction past the crank seals when I shut the engine off for about 10 seconds...
I swapped out one of the pcv valves for a breather...

I figured it probably was a bad idea...
 
Wes Harden said:
I understood the pcv in both valve cover part. I want know how you got fresh air into the crank case?
Click to expand...

I forgot the mention that part of the set-up was that I had one of those funky breather/oil filer cap deals. This engine had a lot of miles, and blow-by was a problem.
 
There are oil filler caps that have the PCV valve grommet made into them also...they work on valve covers with no baffles,they have a mesh type filter inside..oil fill cap with pcv.jpg
 
Subb'd I'll be back to this later. Running SBC valve covers on a 5.3L LS for a vintage look. I just have a breather on each valve cover right now. Guess I will have to route something to the intake
 
Since factory valve covers have baffles for the PCV and I'm running aftermarket ones, I used the Mr. Gasket baffled grommets to keep from sucking oil.

5425.jpg
 
I've seen guys use the outer shell of a 12V cigarette lighter for a PCV baffle before!..
 
You must log in or register to reply here.

Latest Posts

Top Bottom