Quick Question: What the hell is a 'breather box'?

[MonkeyVR6 0]

Hi Chaps,

 

Ok, might seem like a silly question, but I've been away on business and while I was away my mate was working on my Corrado VR6, however I got a text saying that I needed a new 'breather box' and that he's ordered one from Volkswagen and I can pick it up tomorrow...

 

What the hell is it?!

What does it do?!

Are they easy to fit?!

Is it a common fault?!

 

Cheers ez.

[Toad 0]

Errr.

 

Could be the carbon canister, the pcv valve, the isv silencer box.

[Supercharged 2]

He'll mean the PCV valve but I don't think you can buy just that part from VW - need to go to Ford.

[MonkeyVR6 0]

I'm pretty sure its something under the bonnet and I have a vague recollection of my mate mentioning something connected to my (aftermarket) air filter. Is that any help?

[Toad 0]

Probably PCV valve then.

[MonkeyVR6 0]

Probably PCV valve then.

 

So what exactly is it then? What does it do?

[Toad 0]

It's a plastic disk, about 2 inches across, that fits in the crankcase breather pipe between the rocker cover and inlet tubing. Basically it stops crankcase fumes from being ingested at idle I believe.

[MonkeyVR6 0]

Cool. Thanks dude. Hopefully it wont be too complicated for me to fit it tomorrow!

[Toad 0]

Nah, easy, you'll need 2 new jubilee clips for it, unless they're supplied by VW.

[flusted 0]

isnt it like £100 from vw but £20 quid from ford or something stupid like that?

[SamG40 0]

There is a thread on here somewhere with the part number for just the valve alone from VW. You can buy it separetly from VW for a Sharan VR6 but not the Corrado for some reason. The part number is right though, I got one and fitted it last week as mine came apart completely in my hand!

[colinstubbs 0]

.. mine came apart completely in my hand!

 

>>>> Snigger, snigger!

[Europolo 0]

Can you run without this and just put a breather filter on the rocker cover and use a power rohr style aluminium intake pipe without any hassle? What do you do with all the loose ends if you ditch it and run a small breather filter? Ive seen a good few in mags using them?

[Toad 0]

You need to tie in the vacuum pipe going to the carbon canister at some point.

 

I also wouldn't just fit a filter there, as any oil build up will slowly drip onto the exhaust manifold, which won't smell nice.

 

If you really want, fit a catch tank somewhere else in the engine bay. Personally I wouldn't bother, I don't think you gain anything from the power rohr.