by tom4bren - Mucho appreciado ... but I've already wasted more time on this discussion than it'll take me to add a temporary line to try it out ... so it's worth a shot.
Never mind the fact that it was because of you that the time was wasted right?

by tom4bren - My abject apologies. I honestly didn't consider the fact that you'd view an honorific of your online monicker as a denigration. I suppose I need to apologize to wormgod for calling him wormy, crotchrocket for calling him pocketrocket, yellowgizmo for calling him giz, cobrajet for calling him double G, & mostly to referring to Jo as the Whore Jockey.

Gentlemen: My apologies. Sincerely, T4B.

BTW Mr Trek, the first two sentences are sincere, only the last part is dripping with sarcasm.
All I can do is consider the source based on past comments such as these. (And just as I've done, I'll leave it to you to decide how much sarcasm that may or may not have actually been dripping with.)

by tom4bren - Nah. That's not what I was saying at all. Proving you wrong is IRT the comment that I would be too chicken to post that I was wrong.
Who said anything about you not admitting to being wrong because you were chicken? I was simply referring to all the times you've denied being wrong simply because you don't think you're capable of being wrong. So yeah, your IRT was to something I wasn't saying in the first place.

by tom4bren - I'm sorry. I thought for sure you had read this thread: http://www.vehicross.info/forums/sho...ht=interesting.
Well NOW I have. Maybe you thought I'd read it because in it you'd referenced something I'd said in another thread? (about being sure to cap the PCV port on the intake if replacing the PCV with a breather filter)

Now that I have read your other thread though, I have to admit it now makes even less sense that in that one you seemed to have had a decent understanding of how a PCV system works and why it started being put on engines in the first place...only to then apparently brain fart your understanding of what a PCV system does in THIS thread. Surely you can see how things like that (*) might give a guy the impression that some here are disagreeing just because of who they're disagreeing with?

by tom4bren - Nope. I wasn't assuming anything at all. The exhaust is an open system & the crank case is a closed system. There are similarities involved though. Primarily the fact that most people feel that crossover pipes on a dual exhaust system are a waste of time & effort. All I know is that the one time I added them to my rig ... it made a HUGE difference. That's where the analogy ends.
Just remember though, it was you who compared the two types of systems in the first place in an effort to relate it to your crossover tube theory. And I couldn't help but notice you neglected to mention the part about the vacuum being present in one and not the other.

But back to your comparison. Based on your response, it seems your only REAL goal then was to set a trap to see if I'd say that a crossover pipe on a dual exhaust system was a waste of time and effort...even though that still would have done nothing to validate your valve cover crossover tube theory? Another one of those things (*) perhaps?

by tom4bren - & all I'm saying is that your reliance on the drain back ports being adequate to handle both the returning oil and flow of air/oil mix from the right to the left valve cover may or may not be grounded. The older the engine is, the more blow by from the rings there is so there will be more flow of the air/oil mix that needs to be accounted for. Whilst the single PCV was adequate on a new engine, it may not be now.

Look at it this way: Assume that the oil pump is pumping 1 gallon per minute at highway speeds (probably overly conservative). Further assume that there are 12 1/4 in holes in each head for oil return (Guess on my part because I have no idea how many returns there are or how large). That means that the oil returns need to pass 232 cubic inches of oil per minute through a total area of less than 1.5 square inch. That doesn't leave much room for the airflow does it?
But at the time you weren't even acknowledging that there EVEN WERE any such passages in the block/heads that were incorporated into a PCV system...and even after having done so in your other thread.

Aside from that, I don't really see any point in responding to whether I think assumptions based on guesstimations equates to your theory holding water. Suffice to say that any PRESSURE throughout the entire PCV system would be regulated by a PCV valve which was properly selected to open at a predetermined pressure level (which if anything would be lower when an engine is new, meaning that it if would open at the lower pressures expected in a new engine, would just open sooner as an engine aged and those pressures became higher), and that the amount of pressure in question is not likely to require passages of a size to accommodate the kinds of air FLOWS you seem to be imagining.

But again, that's just my opinion...with hardly any sarcasm added here and there whatsoever.

So yeah, truce accepted, and please continue to knock yourself out.