Removed my S&B cold air intake!

Yeah, there’s a couple videos in the thread. You might wanna check out if you haven’t seen them. The problem is that they are capping off the PCV valve. The hose they are connecting is going from the intake to the oil drain cap. I am calling them today during my lunch break to figure out how they vent the crank case because to me this don’t make sense. I will post my findings

 

K&N advertises power increase with their CAI/Filter. This is because their filters do not filter out as small of particulate as paper OEM filters.

Can't have mo power without mo air! They are just inferior filters as far as engine health is concerned.

 

so I called RM engineering and he explained that the crank case ventilate through the oil reservoir and there’s an in-line PCV valve. that is the valve we saw the two hoses connected to. Does it sound to you like something that will work?

 

No, lol. It sounds like you are spot on. Now that RM explained it to me. But adding a catch can to this kit would be even better.

 

I don’t think the vacuum is powerful enough to suck in air through the engine block, just using the excess crankcase pressure to vent the fumes containing unburned hydrocarbons back to the intake. It’s taking cylinder compression plus ignition to force those gases past the rings, intake vacuum isn’t nearly enough to do that.

 

Now we’re talking. I don’t know enough about this stuff concerning these engines. I was hoping somebody would chime in.

 

OK the owner of RM just posted a thread on the third GEN forum.

 

so I just reposted your comment here on the thread that the RM owner just created. It’s on the third GEN forum. he did respond to it.

 

And I just answered the question I think you're asking in that thread.

Here:

https://www.tacomaworld.com/threads...eroute-kit-info-answers.856205/#post-30551869

 

Oil filler cap.

Ok, good deal... I figured that is what it was, but always good to confirm.

It's still connected to the intake, only the exit location on the valve cover is changed.

Here's another analogy (if I wasn't clear earlier):

Lets say you have a room in your house with two windows on the same wall... You open the window on the right and put a fan in the window to suck the air out of the room (maybe your dog farted in there, whatever). Air comes in through the door located on the other side of the room (opposite the two windows)... Air gets sucked out, the smell is removed.

and...

Lets say you have a room in your house with two windows on the same wall... You open the window on the left and put a fan in the window to suck the air out of the room (maybe your cat farted in there, whatever). Air comes in through the door located on the other side of the room (opposite the two windows)... Air gets sucked out, the smell is removed.

This the same difference as switching your engine's crankcase fumes exiting from the back of the valve cover to the front of the valve cover.

Certainly does... So looks like now I've got another mod to do to mine as well.

 

That's how the system works stock and how it still works now. The vacuum in the intake is pulling air through the passenger side valve cover (elbow attached to the intake), through the crankcase, into the driver side valve cover and finally into the intake and burning it.

I see it now. I had assumed they were still using the stock PCV and venting it into the oil filler... basically just making a loop. Now I see that it changes the pickup point from the back of the head (stock pcv valve) to the oil fill tube but still running to the intake like normal. This makes sense and eliminates the oil pooling problem by pulling the air from the front of the valve cover and not the back.

 

Just posted something but it seemed to get lost somewhere,lol. So I will repost:

what about the hose that is in front of the throttle body? Is this just a vacuum hose? I was lead to believe by others the crankcase vented here too.

 

Ok that was confusing... (you typed your Q within the quote of my post, but I finally found it)

I may include a can... Not sure yet (I guess it'll depend how ambitious I am or how much I wanna spend).
As I mentioned earlier, oil mist isn't something I've ever had cause me problems, and RM's kit still solves the concern I had about (liquid) oil getting into the intake.
Not sure which other hose you're speaking if...

 

The hose that is in the air tube right before the throttlebody it’s hooked on with a spring clamp.

 

That's where the fresh, metered air comes from for the PCV system. Consider it the start and the end is drawn into the intake and being burned. All the air that is pulled into the intake, from vacuum, for the PCV system needs to be replaced. That's where its replaced.

 

Yeah when I first heard about the catch, can, I thought this is where it goes. because when I posted in another forum on Facebook I had several people tell me that the reason my throttlebody was so dirty and there was debris within my intake assembly was because of this hose not the cold air intake. so I guess they were wrong?

 

Well... the pcv system isn't perfectly balanced. When the valve is closed some air/oil can go "backwards" from the passenger side "in" and make its way to the intake tube. There's no valve on that side.

 

I would trust info from here on TW long before anything that came from Fakebook.

Yeah that other hose hasn't been part of the problem we're dealing with here. The problem area is the factory PCV being at the back of the head, and the poor drainage in that spot.
The S&B intake from earlier I'm sure contributed to the dirty throttle body.