greg porter
Well-Known Member
I was kidding Mike
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I was kidding Mike
Any catch can is better than none
Matt, if you need any fuel/oil safe check valves I have one for you.
If you're removing the OEM PCV valve in order to punch it out, or replace it with an open barb, you'll probably want to use a check valve between the catch can and the intake manifold (if you plan to route the PCV lines back to the intake - some people chose not to do this.)
Matt, that opening on the side of the valve cover is the "IN" for the PCV system. Yes, oil may work its way out of that opening as well (my guess is from the oil feed passages and the actuation of the valves), but if you're going to put a catch can anywhere, you'll want to put it on the crank case end of the PCV system. I ran one @ the valve cover for about a month after putting the supercharger on. Zero oil collected in it, so I removed it, leaving only the catch @ the crankcase position.
Take a look near the pulley system on your K20, just below the level of the intake manifold, you'll find a rubber line running from the block to the intake manifold - this is where you'd ideally put a catch can. If you want to get rid of that breather filter, might as well run a fuel line from the valve cover to the intake piping, as it was originally designed. (You should already have a bung for it on the intake - believe the hose diameter is 5/8" IIRC.)
Just make sure you use some super awesome red hoses. Nothing says I haz POWAH!!!! like red hoses in the engine bay.