3.3TT *IMPORTANT* WHO WANTS ORANGE RUBBER IN ENGINE MANIFOLD??

[General_Vodka]

Anyone want rubber in your engine? Yes? If you don't then RUN AN OIL CATCH CAN. LOOK AT THIS AND SAY YOU DONT NEED ONE...

 

[CKeeler]

Which part of the intake is that?

 

[General_Vodka]

Which part of the intake is that?

The charge pipe coupler that goes to the throttle body.
Edit: the dark pictures are when I opened the throttle body and slid my snake camera into the intake manifold.

 

[General_Vodka]

So basically all this gunk is getting sucked in to the madifold and then blown in to the cylinders and then burnt. Also probably coats the valves .. not good

 

[CKeeler]

Ahhhh...
That’s what I was thinking it was. Hard to believe they might have used an inferior product

 

[Aarvix]

What does a catch can have to do with that? If it's an intake coupler you're gonna eat it either way.

 

[General_Vodka]

What does a catch can have to do with that? If it's an intake coupler you're gonna eat it either way.

The catch can stops the oil from building up in the coupler.

 

[Drudge]

The catch can stops the oil from building up in the coupler.

So the catch can would prevent that type of build up or would we still see some residual stuff built up?

 

[General_Vodka]

So the catch can would prevent that type of build up or would we still see some residual stuff built up?

I think it would eliminate all oil build up, if you get a good catch can.

 

[jeffh]

but the catch can interjects after the throttle body. the passengers side pcv spits out AFTER the throttle body. the drivers side has been proven to never catch diddly

 

[General_Vodka]

but the catch can interjects after the throttle body. the passengers side pcv spits out AFTER the throttle body. the drivers side has been proven to never catch diddly

The driver's side is the intake side. Where air enters the crankcase. Notice the word "enters", if you have oil exiting the entrance then something is wrong. The bassenger side is the exit, where the oil gets injected back into the intake BEFORE the throttle body. A catch can catches that oil. Real simple logic and I don't even have a catch can installed to reference. If I did then this post won't exists.

 

[jeffh]

no it does not. there is no pcv/line with oil in the intake before the throttle body. im not a dumb ass thats never turned a wrench.

theres 2 lines as seen here. outlet and inlet. out of the pcv and into the INTAKE MANIFOLD. thats it. there isnt anything in the pass side intake at all. except the recirc. so please show me where its getting oil before the silicone boot that attaches to the throttle body.

 

[Toddasaurus]

no it does not. there is no pcv/line with oil in the intake before the throttle body. im not a dumb ass thats never turned a wrench.

theres 2 lines as seen here. outlet and inlet. out of the pcv and into the INTAKE MANIFOLD. thats it. there isnt anything in the pass side intake at all. except the recirc. so please show me where its getting oil before the silicone boot that attaches to the throttle body.

View attachment 38739 View attachment 38741

There are two ways the 3.3tt vents blow-by/crank case positive pressure.

#1 - by the PCV system, which you identified with your pictures above.
#2 - by the valve cover vent, located on the driver's side bank. This vent is utilized when under heavy throttle, as the surge tank is no longer pulling any vacuum to remove pressurized crankcase vapors. This hose connects directly to the pre-turbo driver's side intake elbow, thus allows blow by/crank case vapors to be routed into the intake, pre-throttle body, and subsequently contaminating the driver's side compressor, both hot and cold sided charge piping, and lastly, the silicone coupling that attaches to the throttle body.

Hence the purpose of a dual catch can setup.


Edit: pics for clarification...

Driver's side valve cover vent hose.




To driver's side intake elbow, as a vacuum source for WOT.

 

[jeffh]

and like i stated, tons of us have never caught anything but a mist from the drivers side.

 

[Toddasaurus]

and like i stated, tons of us have never caught anything but a mist from the drivers side.

Don't worry, I'll post a pic of oil my VC vent catch can has caught so far. Oil vapors, or mist, is enough to coat the inside of your charge piping and couplings.

Now is it causing the breakdown that @General_Vodka mentions? I have no idea.

My only point is that crankcase oil vapors comes from both the PCV side, and the driver's side VC. That's all.

 

[Toddasaurus]

Here you go. This what I've collected in a little over 2 months on the front, valve cover vent.



We've got about a teaspoon of oil in just about 2.5 months. This will add up, over a year you're looking at around 25-30 mL of oil, even moreso if you use crappy oil.

Again, I have no idea if a catch can would prevent what @General_Vodka is seeing in his I/M, but they certainly prevent a substantial amount of blow-by from going back into the intake. Of course the PVC can catches much more than the VC can (my PCV can has a LOT in it, I may even have to drain it before my next oil change) but that's not my point.

 

[General_Vodka]

I have definitely seen oil in my intercooler and my intakes. I assumed it was from the PCV but it may have been from the turbo. I hope it's from the PCV, much easier to deal with.

 

[StungnTn]

I'm curious, are you running WMI?

 

[General_Vodka]

I'm curious, are you running WMI?

Nope, no meth.

 

[Toddasaurus]

I wonder if the coupling was damaged during the wreck, perhaps that's how you got the flakes.

Or maybe our couplings are just cheap, and eventually become brittle and start flaking regardless.

Total unfounded guesses on my part.