I don't like spearmint, instead I attempted to match the threads of the PCV but haven't had much time to do so lately
Awesome thanks dude! I didn't know if there was another way, Ive seen some AP2 covers like mine fully remove the pcv and gets plugged, just don't know with what
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yeah you ap2 motor guys can screw a bolt in since your pcv is a threaded ordeal

 

capping your pcv
krank vents
and somehow rob's vent are all things i see as incorrect.

 

Not sure what you mean by incorrect. These methods have all worked on S2000s and other cars.

At high RPM in race engines (most of my experience is with K20/K24 IMSA (formerly Grand Am Cup) Civic Si & TSX engines) the PCV is a restriction for venting the crank case. It doesn't help with ring seal and the amount of blow by that occurs in any engine with forged pistons will be choked by PCV if that's the only vent - which is why I say get rid of it and cap the port to the intake manifold. Keep your crankcase separate from your intake, the risk of putting oil into your intake isn't worth it. On those cars we modified the valve cover baffles to prevent liquid from getting to them (on bumps and under cornering loads) and used 2 -10 ports to a catch can to vent crank case pressure.

That's my $0.02 and my reason behind it.

 

i've been down the road of massive oil consumption, and have tried everything, including the pcv, breather filter, krank vents, new valve guides, catch can, etc.

the ONLY thing that reduced oil consumption was the krank vents, however, i don't like the vacuum it creates that sucks in the seals and makes a loud clucking noise.

basically, with the amount of oil you're burning, it's getting past your piston rings and getting burned in your cylinder. fixing other reasons for oil burning will be negligible compared to the amount of oil getting past your piston rings.

the ap2's have different piston rings, they also have less oil consumption. that about says it all for me.

i top off 1 quart per 450 miles of highway driving. engine runs fine otherwise.

 

1 quart per 450 miles you got a problem sir.

 

so i had all 3 valvecovers in front of me the other day and i figured i'd compare them to see what i could learn. Visually, there all red! heh, Well, looks wise, they really are the same with the only changes, from what i can tell, are the pcv locations 04+ and the cam sensor location 06+. The baffling over the cams looks identical. Now I dont know if thats the case on the other side as i did not remove the baffles and i couldnt see a thing through the holes.

I took the 04/05 home with me knowing that they pretty much are identical. I'll be slapping it on soon with a pair of moroso catch cans and a moroso oil pan baffle. If I continue to fill up my can i'll be modifying my ap1 valvecover to reduce the holes in to the baffle from 2" to 1" making them suck air from higher up in the valve cover.

after reviewing the three valve covers I've decided against drilling any holes in to my ap2 valvecover as i do not see this as the root of the problem. IMO the root of the problem lies in the design of the intakes/2" holes inside the valvecover that feed air to the pcv. I'm not a mechanic/engineer/pcv specialist. But from what i can tell, thats the only place for oil to enter the pcv system in the first place. So reducing the size and raising it up should help.

 

Or just plug the PCV port and run the front breather to the atmosphere...

 

This has been discussed already. The m14x1.5 pcv location needs a fitting that protrudes into the VC more. Drilling the holes has been proven to address the issue as well.

 

If the car is used mainly for track, ditch the pcv. I replaced mine with an m14x1.5 to -6 an to a -6 an to 3/8" barb adapter. From there, it goes to a saikou catch can, that is vented to atmosphere. The front vent is routed to a second catch can, and then to atmosphere as well.

Required fittings:
http://m.summitracing.com/parts/sum-220765

http://m.summitracing.com/parts/rus-670520

I've been running this setup since a couple weeks ago. It completely eliminated my catch can from over flowing after every 20 minutes of track time. I was easily adding 1 liter of oil for every 90 minutes of track time. Now, my dip stick level remains the same from start to end of day.

Do not cap your pcv! This is the dumbest advice that is often advocated here. Sure, it's going to stop oil from getting sucked into the intake manifold, but, you are also blocking off a means of crank case pressure relief. Like someone else said, it does not address the root cause.

If you insist on keeping the pcv valve for emissions, then the the only other option is drilling the valve cover baffle.

 

For those that are having problems with the catch cans filling up, are you venting the catch can to atmosphere or applying vacuum to it by connecting it to the intake path?