PCV ?

[maxhunter]

Are you guys running PCV's? Or just breather vents.....

I have a dual PCV set up but I believe the PCV valves are probably not the correct spring tension.
I have a tremendous amount of air being pulled from the valve covers.
I went to pull the filler cap off with engine running and it kept getting sucked back down to the valve cover......

Trying to work the bugs outta the new motor. I think this might be one of them.

Here is a picture of the set-up a couple weeks ago, before new carb. Still the dual PCV's, just a little different routing.
I am thinking it would be best to plug tube at carb base and just run with breathers. Thoughts?
http://i258.photobucket.com/albums/hh274/maxhunter23686/DSC_0190.jpg

[nordic454]

I was running dual PVC's before I switched everything around. with this new motor I had a problem od oil coming out of non baffled breathers. I ran 2 billet pcv's to a puke tank with a breather, and I have the carb capped off. It worked great. When I switched exhaust, I also switched back to my original M/T covers and just went with baffled breathers. I still have this setup sitting on the shelf.;)

[maxhunter]

Nordic454 NICE setup!
I am a concerned about pulling oil (mist) into the manifold with the amount of vacuum I am seeing in the valve covers......So the puke tanks collects that.... right?
My valve covers are non baffled. Straight shot to the PCV's.
I am not familiar with that kind of collection system but there is no pull from the intake on this? Just whatever vents to the small tank (that's a question too)
Are the billet PCV's just a fitting or do they have checks valves in them?

Also I wonder how much better the engine would run if the vacuum was actually pulling fuel air mixture through the carb instead of air through the PCV's.
I am thinking my current set up is short circuiting alot of available air flow......
Did you notice any difference with one set up over another?
Did you have to re-tune the carb?

On the MT valve covers....is that just a vent breather then....through a mesh material? I was thinking that would be the way I would go.

I figure I am loosing quite a bit of cfm through the carb that could be put to better use, but I might be way off base.

Sorry for the 20 questions......but thanks for the help!

[nordic454]

if you cap off the vacuum on the carb, then correct, you will not pull oil into the manifold. my engin was setup this way long ago when I got it, and changed it when I started playing around with the original motor. The pcv's I was using have a removeable check valve inside. The tank will collect oil that may be pushed past the valvecover. I typically took out the check valve and used it as just a fitting to push air. My covers are not baffeled either, but my breathers are. You can also buy baffeled push-in grommets for the pcv or breathers as well, which is what I used for the billet pcv's. Its like a fuel cell foam material. I didnot HAVE to re-tune the carb. Honestly I dont remember if it ran "better" when I changed to this setup, as I did a bunch of other things at the same time.