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What Is an Oil Catch Can, and Why Doesn't Every Car Have One?

MACE

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For any car enthusiast, this article is for you. It's known that the harder a car is driven, the more blow-by gases there are. These gases mixed with oil particles from the crankcase end up in your intake via the PCV system and contaminate the manifold, and cause carbon build up on valves and pistons.

To help solve this it is a good idea to install a catch can to filter the crankcase vapours so your intake system stays clean and no carbon builds up in the engine (even more important on SIDI V6 engines as there is no petrol injected onto the valve to wash it). Check out the article to find out more, and check out the website for a catch can to suit your vehicle.

http://www.popularmechanics.com/cars/a22073/oil-catch-can/


http://www.popularmechanics.com/cars/a22073/oil-catch-can/
 

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Deuce

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That was a good and simple explanation.
So if i disconnect my pcv, run it to a catch can instead, then run. A line back to the pcv port on the intake.
Job done, more POWA!!!
 

Smitty

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.... a wank for street driven vehicles
and illegal of course according to the EPA

an oil catch can is no replacement for a proper PCV
valve and costs your engine nothing in terms of power
(as a PCV valve only works at idle)
 

Deuce

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.... a wank for street driven vehicles
and illegal of course according to the EPA

an oil catch can is no replacement for a proper PCV
valve and costs your engine nothing in terms of power
(as a PCV valve only works at idle)
So while fitting a new intake to my 355 in a vehicle that goes to the drags once a year, and a powercruise once a year, in a country where it isn't illegal, i should still just plumb it up like factory??
 

Dayvo

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I have one on ve sidi and its amazing how much crap it collects .
 

Pollushon

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Catch can on an LS is a wise investment. Especially with a few kms and if you like to give it a squirt, these things slurp down oodles of oil. It's pretty easy to keep the system sealed and make use of the existing PCV so it's legal.

20180406_173915(0).jpg
 

monstar

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Catch can on an LS is a wise investment. Especially with a few kms and if you like to give it a squirt, these things slurp down oodles of oil. It's pretty easy to keep the system sealed and make use of the existing PCV so it's legal.

View attachment 198865
But why, to keep intake tract oil free?
 

immortality

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Incorporate the catch can into the PCV system for best results.

A catch can doesn't make power, but it does prevent the buildup of gunk inside the engine, in particular the intake system which may hurt performance in the long run.

I don't have enough fingers and toes to count the number of threads on this forum about V6 engines with an irregular idle and TB issues 99% which are caused by the buildup of **** that comes through the standard PCV system.
 
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