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Catch Can Install Is This The Right Way?

aardi

By aardi,
in Engines & Forced Induction

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aardi Contributor

aardi

Posted
Posted

]Well got around to installing my catch can on the weekend and i went with this set up. Can any one tell me if this is correct way of doing it and if its working properly ? Any thoughts would be great. Car seams to be running fine but has a miis under boost but i think that due to plugs or coil packs cause just went on the dyno and had boost turned up . post-78172-0-11146500-1295788660_thumb.jpg

post-78172-0-04231900-1295788690_thumb.jpg

post-78172-0-31144800-1295788729_thumb.jpg

StealthX Veteran

StealthX

Posted
Posted

Yeah that's got the PCV catered for, but you can also run the valve cover breathers to it too.

It's prob better for the engine to vent it to air instead of back into the intake, but it's not very legal that way...

blind_elk Grand Master

blind_elk

Posted
Posted

Pretty sure that won't work. You still have it set up so that oil and oil vapour can be sucked into the intake side of the turbo, particularly under boost (high load) conditions. And that is exactly when you don't want it to happen.

The PCV valve only opens under high vacuum (low load) and detonation from the oil vapour isn't a problem.

Rolls Grand Master

Rolls

Posted
Posted
  On 23/01/2011 at 8:38 PM, blind_elk said:

Pretty sure that won't work. You still have it set up so that oil and oil vapour can be sucked into the intake side of the turbo, particularly under boost (high load) conditions. And that is exactly when you don't want it to happen.

Yeah but then you have to vent it to atmo which is not legal.

Rolls Grand Master

Rolls

Posted
Posted (edited)

How is that different to how hes done it, still has the PCV and plumbed into the intake?

edit: my bad I thought he had done it like you had, you are right that is the better way to do it. When on boost it sucks the gasses via the catch can, when on vac it sucks straight out the cam covers avoiding oil in the turbo.

His is the opposite, when on vac it sucks via the catch can, when on boost it sucks the oil straight out of the cam covers into the turbo.

Edited by Rolls
aardi Contributor

aardi

Posted
  • Author
Posted

thought i might of f#!!ked it. So what u have done is plumbed the catch can between the cam cover and the pvc taking out that pipe all togeather? did u notice a difference? will hook it up ur way just means bigger pipe and larger barb ends on the catch can witch will be a bitch to find. Thanks for the pics mate.

75coupe Grand Master

75coupe

Posted
Posted
  On 24/01/2011 at 6:51 AM, blind_elk said:

No you don't!

Here's mine, stil complying with the requirement to have a fully sealed system not venting to atmosphere:

post-269-0-43814200-1295851834_thumb.jpg

post-269-0-26760300-1295851848_thumb.jpg

and you always run those hoses that close to the fan????

Rolls Grand Master

Rolls

Posted
Posted (edited)

Thats better, you'll pass an epa/defect inspection with it set up like that as well.

I would have used black hose under the intake piping personally, but its functional at least.

Edited by Rolls
maclarenf1 Experienced

maclarenf1

Posted
Posted
  On 24/01/2011 at 9:30 AM, 75coupe said:

and you always run those hoses that close to the fan????

I was thinking the same thing

that crazy close man.... i get scared by looking at the picture

blind_elk Grand Master

blind_elk

Posted
Posted
  On 24/01/2011 at 9:30 AM, 75coupe said:

and you always run those hoses that close to the fan????

It's just the angle of view. If it were a problem, I would have done something different.

post-269-0-41304800-1295940050_thumb.jpg

75coupe Grand Master

75coupe

Posted
Posted

nup still to close for my liking, I especially like the black electrical tape holding it in its 'safe' position... come on really you couldnt find a safer place to have them or is that all the hose you could afford...

aardi Contributor

aardi

Posted
  • Author
Posted
  On 25/01/2011 at 6:45 AM, Rolls said:

Thats better, you'll pass an epa/defect inspection with it set up like that as well.

I would have used black hose under the intake piping personally, but its functional at least.

yeah i know it stands out a bit just a quick install got to fly out for work tomorrow so got some hose and fittings on order for when i get home plus don't really like the brass fitings i used. It won't stand out so much then. thanks for the advice guys.

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