PCV / Catch Can

[richybigman]

Hi,
I'm looking to do the PCV removal but don't have a catch can at the moment.

Can i do the PCV removal without fitting a catch can until i can get hold of the type i want without causing any problems or faults with the car and the breathing system?

I have searched but can't find the answer.

Cheers all

Rich

 

[Gravesie-363]

Would also like to know this Like the thought of tidying the engine bay up but dont really fancy fitting a catch can !

 

[Andrewcupra TDI]

me too , have read a litte about venting to atmoshphere rather than in a can

 

[swedey21]

Ive been running mine without a catch can..vented under the car for a while..
After i fitted one with too smaller a hole on the catch can causing it to smoke...

 

[richybigman]

With the venting to atmosphere you still need a catch can but just run the pipe that would usually go to the TIP, under the car. Otherwise you would be leaving droplets of oil on the road for others to maybe slip on

 

[Gravesie-363]

So confused

 

[richybigman]

Lol, i'm wanting to keep the pipework the same off of the rocker cover to the turbo intake pipe at the moment.
I just want to remove the piping under the inlet manifold as shown below:

Borrowed picture from another thread

From the elbow off the oil filter housing i'm going to run a 19mm hose into the 3 way hose from the rocker cover.

I just wanted to make sure this was safe to do

 

[Murdered LCR]

I ran mine to the floor for ages before getting a catch can

 

[richybigman]

So i assume it'll be fine run through the hockey puck thing to the intake pipe as it is now then with the PCV removed?

 

[Murdered LCR]

I got rid of the hockey puck blocked the tip connection and ran it strait out the rocker cover to the floor

 

[richybigman]

And that was after removing the PCV valve and pipework from under the inlet?

 

[Murdered LCR]

Yes mate after removing all the crap

 

[richybigman]

Lol, just wanted to make sure

 

[motty225]

So all you did was block off the tip, block off the inlet manifold and had the single pipe from the rocker to the floor? May do this myself

 

[Murdered LCR]

Not just out the rocker cover you need to do the pcv removal

 

[ReDBull]

Here's a good guild from another forum
http://www.audi-sport.net/vb/a3-s3-...de-how-fit-catch-can-simplify-pcv-system.html

 

[Phillc]

I went to Inters on Sunday and whilst talking to the guy who built the LCR race car i noticed that he had blocked the outlet on top of the oil filter so was only running the outlet from the cam cover, apparently the blank is a VAG part as some road cars run with this blocked off, so i may look at doing this as it is much easier to run the one hose, if its ok on a race car it should be ok on mine? i shall do a bit more research first though.

 

[richybigman]

Interesting, would be alot easier for people to understand, lol. Most cars only have the one main breather anyway don't they?

 

[Captain Cupra]

The amount of vapour I get coming into my can from both I would not feel happy blanking the block breather off, I believe the release of pressure out of both pipes is a good thing, and you need the combined pressure to enable the can to work, well in my case as my can was custom made to work with baffles to condense the vapour, excess crank pressure is bad and can cause damage, blow by ect I can't see how you could black the block breather, not good in my eyes.

 

[Captain Cupra]

Get rid of all of it and vent to atmosphere and not back into the inlet pipe, if you run the vent pipe from the can down the back of the engine by the steering rack with a breather filter, you get no vent smell at all, it also means it can just breath and vent at its own will not just when there's vacuum into the intake and when the PVC puck is open.