20tCDude05

I searched, got nothing. So, exactly how do I vent the crankcase?

Joe_Dezod

You do not want to. You will get oil all over the place.

The hose that runs from your intake pipe to the side of the crank case is where peole run catch cans. Putting a catch can in this line allows you to trap oil and prevent it from going into your turbo.

I would not just plug the intake pipe and put a breather filter on the crank case. It's messy, highly illegal, and offers no benefit.

20tCDude05

Oh, because I was told whenever I up the boost, I have to do that. Otherwise, I will blow my motor. I am thinking about going up to 12 lbs when I get my 3" exhaust and boost controller put in.

Joe_Dezod

You will not blow your motor for not venting that crank case port. My Evo ran 23psi (which is a walk in the park for those engines) and everything is fine.

The PCV valve MAY cause damage if it failed theoretically. I have not seen one incident on the boards though where a failed PCV valve opened up and damaged a head.

I wouldn't worry about. Tuning, fuel, and igition delivery are what's important at 12psi.

20tCDude05

I thought venting the valve cover was ok?

Joe_Dezod

Venting is "ok" but not the best way to go.

As I said, it's extremely messy, and illegal.

Mr_Meaty

Illegal? Really? Why? I mean, technically, putting a turbo kit on your car is "illegal", so what's the dif?

that being said, my tuner also recomended welding a bung on my intake to rout my valve cover back to it through a catch can to create proper vacuum, but I never got around to it.

20tCDude05

Never heard of that. Interesting...

Clayton1

I think that it is illegal b/c it vents vapors that have engine oil in them into the atmosphere, which the EPA deemed illegal. I could be wrong though. I would do want Dezod reccomends and rock the catch can. That should keep oil out of your intake and therefore out of your turbo. Plus it adds a little bling to the engine bay.

Joe_Dezod

Adding a turbo kit is illegal soley due to the catalytic converter laws, but you can still pass in some states.

A breather is a illegal due the oil vapers that escape your valve cover. It also make your engine bay pretty messy.

You don't have the valve cover plumbed back to your intake? The 2AZ is designed to have one hose going to the intake pipe, and one to the intake manifold. It will ensure a longer lasting setup. Adding a catch can reduces oil vapors being fed into the engine, which improves knock resistance and lowers EGTs. I suggest doing this.

If your intake pipe doesn't have the bung for it, where is your valve cover going to?

CarbonXe

iTrader: (1)

The PCV is there to take care of this for you.

CarbonXe

iTrader: (1)

Any altering of emission controlled devices is a federal offense.

Joe_Dezod

The PCV valve closes once above vacuum. It seals off, hence why a turbo doesn't destroy the head. The other port is the only thing left, and with out vacuum pulling on it, the vapors just sit in the head, which is why oil ends up dripping out of a breather filter.

Mr_Meaty

the dezod and turbonetics are the only turbo kits i've seen on the tc that connects the valve cover ot the intake (like the stock setup) Not sure about greddy, but the TT, zpi, and treadstone kits just dont' have anything on that valve on the cover.
It's just left open. I put my old hose back on and have it pointing down, but I plan on getting it routed to my intake in the future per recomendation of my tuner, but I dont' know how much that would cost.

java09

i too have nothing attached to it ( i have TT stage one liek phil) and my friend chris here with the custom kit has nothing either.. no issues.

Joe_Dezod

I'm not saying it's going to cause an issue right away. I'm saying you should be using at least a catch can plumbed into the intake if you want to properly ventilate the head.

The old school method of having just a open vent or breather isn't the best option for the environment or your engine bay. It get's messy.

The cleanest, least poluting, most efficient system of ventilating the crank case is have a hose connecting from the crank case to a catch can, then from the catch can to the intake pipe.

A hose will work, having nothing but a filter will work, it's just not the best option.

I will never say that having just a filter or nothing else will damage the motor.

java09

i trust your judgment joe! much thanks i will look into that for sure!

BrownDogg

Joe definitely knows his stuff inside and out especially on the tC. I am installing a oil catch tomorrow because of what Joe said in here!

java09

haha ill be next!

BrownDogg

Sounds good to me... I mean if you think of it... A shiney oil catch can looks cool under your hood and its functional so you get the best of both worlds!