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[dublin.jd]

Actually, I miss read.

Would have to block where the y shaped breather meets the plenum. 

That's where the vacuum comes from.

Let's see if you think I'm wrong.

I disagree again, is it not the blowback gases that force the fumes through the breathers? That's my understanding but I dont know for sure and don't just take people's words for fact. So if u can explain?

[chrisgixer]

In fact is there ANYONE here that thinks removing vacuum from the plenum is a good idea?

When I said bypass plenum I meant just the breathers, by diverting them to catch tank. I never said remove vacuum from plenum.

The vacuum from the plenum, pulls the blow by gasses out of the crank case., via the breathers. The vacuum is caused by the piston down stroke of each cylinder.

If you divert the breathers to a catch tank, then they are no longer connected to the plenum. Therefor, there is no longer any vacuum from the plenum to remove the blow by gasses in the crank case, and no longer keeps the crank case at negative pressure. Therefor, diverting the breathers to a catch tank REMOVES plenum vacuum from the crank case.

Please explain how removing plenum vacuum helps?

I disagree , vacuum would sill be there it just would bring gases back to intake. Obviously u would have to block where the y shaped breather connected to plenum. En lighten me if I'm wrong

Ah, a tee from the breather tube into a vac tank?

The vac tank would have to be sealed or the vavuum will pull air from atmosphere through the vac tank instead of the crank case, and introduce an air leak.
If sealed how will it draw air and oil vapour from the crank case instead on the plenum? Answer, it won't, obviously.

Ok then, are u saying it's impossible?

Via the methods you've accepted as plausible, yes. Very much so.

Plain fact is, removing the vacuum that's connected to the rank case via the breathers to the plenum, makes the matter worse.

Please. Enlighten me if I'm wrong.

[dublin.jd]

When I disconnect the y pipe from plenum I get fumes blowing out, not sucking in.
Try it and you'll see. That tells me that the crankcase is under positive pressure and not vacuum.

[chrisgixer]

Actually, I miss read.

Would have to block where the y shaped breather meets the plenum. 

That's where the vacuum comes from.

Let's see if you think I'm wrong.

I disagree again, is it not the blowback gases that force the fumes through the breathers? That's my understanding but I dont know for sure and don't just take people's words for fact. So if u can explain?

Your understanding is not correct.

If the blow by gases FORCE their way to the breathers>plenum>induction to the engine etc! then they are causing THE SAME positive pressure in the crank case AND HENCE THE SEALS, such as the cam cover gaskets, cam seals, cranks seals front and rear etc etc.

The breathers, via vacuum from the plenum, turn that positive pressure into a negative pressure, there by removing the pressure in the crank case and hence the pressure on the seals that you say are leaking.

[dublin.jd]

Yeah but with the y pipe connected would the pressure not be sent through the intake as it was designed to be? To be burned again for emission control?

[chrisgixer]

When I disconnect the y pipe from plenum I get fumes blowing out, not sucking in.
Try it and you'll see. That tells me that the crankcase is under positive pressure and not vacuum.

Remove the pipes, and you have two open ends. One end to the crank case the other to the plenum.

The end from the crank case should positive/ blowing, correct.

BUT the end from the plenum should be sucking/negative. If its not, it's blocked. In fact if you've removed that pipe and the engine tick over is not affected, then they are definitely blocked.

[05omegav6]

Not a bitchfest, just you're not listening... I raised the point about the covers being warped five sodding pages ago, and rereading through this entire diatribe, you have...

1. Yet to answer that point, and

2. By your own admission, not actually changed the gaskets on this car.

Answer those two points and we might actually get somewhere

I do know they're leaking, not sure if covers are warped. And as I said earlier I haven't got around to doing anything yet. Again this has nothing to do with what I'm asking.
I don't understand why u respond if u have no interest or are against what i'm trying to achieve.
I don't reply to threads unless I can add something positive.

Your camcover gaskets are leaking, and before you fix them, you are trying to establish if there is a possible way to stop them leaking in the future.

I am all for improving things to make them last longer... in fact I have invested two sets of tyres, three sets of polybushes, two trips to Wheels In Motion specifically to find an acceptable long term solution to eliminating the need to constantly replace the vertical rear bush in the front wishbones. I am also singularly responsible for the discovery that the poly rear subframe bushes for the Monaro, not only fit the Omega, but go along way to controlling the rear end when pressing on. Again done at my own time and expense.

So don't you dare suggest that I'm not interested

Rather than trying to pick holes in the advice given, how about getting off your keyboard and trying some ideas out, and reporting back with your findings, good and bad.

And by the way, the word 'YOU' has two more letters in it

[chrisgixer]

Yeah but with the y pipe connected would the pressure not be sent through the intake as it was designed to be? To be burned again for emission control?

Yes, but it should be sucked out, not blown.

[dublin.jd]

If the breathers were blocked I would not have those fumes coming out of y pipe while it's disconnected?again that's my understanding.
I have tis2000 so I'll look it up on that to see if I find anything.
Also have epc3 if anyone needs part numbers.

[dublin.jd]

Yeah but with the y pipe connected would the pressure not be sent through the intake as it was designed to be? To be burned again for emission control?

Yes, but it should be sucked out, not blown.

I hear what ur saying but it defo blows out on mine? Maybe that's something I need to look at?

[chrisgixer]

If the breathers were blocked I would not have those fumes coming out of y pipe while it's disconnected?again that's my understanding.
I have tis2000 so I'll look it up on that to see if I find anything.
Also have epc3 if anyone needs part numbers.

Now is that a statement or a question? Clearly they are not blocked at the crank case end on the y pipe. But are they are blocked AT THE PLENUM END. Therefor the pressure is NOT ESCAPING INTO THE PLENUM. At all.

Look up cam covers, o rings and black goo while your there.

[chrisgixer]

There is no vacuum.

[dublin.jd]

Not a bitchfest, just you're not listening... I raised the point about the covers being warped five sodding pages ago, and rereading through this entire diatribe, you have...

1. Yet to answer that point, and

2. By your own admission, not actually changed the gaskets on this car.

Answer those two points and we might actually get somewhere

I do know they're leaking, not sure if covers are warped. And as I said earlier I haven't got around to doing anything yet. Again this has nothing to do with what I'm asking.
I don't understand why u respond if u have no interest or are against what i'm trying to achieve.
I don't reply to threads unless I can add something positive.

Your camcover gaskets are leaking, and before you fix them, you are trying to establish if there is a possible way to stop them leaking in the future.

I am all for improving things to make them last longer... in fact I have invested two sets of tyres, three sets of polybushes, two trips to Wheels In Motion specifically to find an acceptable long term solution to eliminating the need to constantly replace the vertical rear bush in the front wishbones. I am also singularly responsible for the discovery that the poly rear subframe bushes for the Monaro, not only fit the Omega, but go along way to controlling the rear end when pressing on. Again done at my own time and expense.

So don't you dare suggest that I'm not interested

Rather than trying to pick holes in the advice given, how about getting off your keyboard and trying some ideas out, and reporting back with your findings, good and bad.

And by the way, the word 'YOU' has two more letters in it

So what do u suggest? Is it impossible what I'm trying to do? Btw I'm looking for constructive ideas before I do anything.
I'm not out to offend anyone so don't be offended.

[chrisgixer]

Not a bitchfest, just you're not listening... I raised the point about the covers being warped five sodding pages ago, and rereading through this entire diatribe, you have...

1. Yet to answer that point, and

2. By your own admission, not actually changed the gaskets on this car.

Answer those two points and we might actually get somewhere

I do know they're leaking, not sure if covers are warped. And as I said earlier I haven't got around to doing anything yet. Again this has nothing to do with what I'm asking.
I don't understand why u respond if u have no interest or are against what i'm trying to achieve.
I don't reply to threads unless I can add something positive.

Your camcover gaskets are leaking, and before you fix them, you are trying to establish if there is a possible way to stop them leaking in the future.

I am all for improving things to make them last longer... in fact I have invested two sets of tyres, three sets of polybushes, two trips to Wheels In Motion specifically to find an acceptable long term solution to eliminating the need to constantly replace the vertical rear bush in the front wishbones. I am also singularly responsible for the discovery that the poly rear subframe bushes for the Monaro, not only fit the Omega, but go along way to controlling the rear end when pressing on. Again done at my own time and expense.

So don't you dare suggest that I'm not interested

Rather than trying to pick holes in the advice given, how about getting off your keyboard and trying some ideas out, and reporting back with your findings, good and bad.

And by the way, the word 'YOU' has two more letters in it

So what do u suggest? Is it impossible what I'm trying to do? Btw I'm looking for constructive ideas before I do anything.
I'm not out to offend anyone so don't be offended.

Your doing a bloody good job

Yes, it's not possible.

Constructive idea no 1.

Understand what your dealing with before oppsing with it.

[chrisgixer]

Constructive idea no 2.

Go see if there is suction from the plenum connector nipples that are visible once the y shapes pipe is removed.(at the back of the bit with "Eco tech" written on it)