Anyone put an oil catch can on?

It's on the bottom, passenger side facing toward the back of the car. YOu can see it from underneath with the diffuser off. It may even be possible to install the can without removing the intake but you're going to need some pretty small hands.
 
does it matter what kind of catch can you own? Certain manufacturers like greddy and perrin charge like 100 bucks for this but ebay you can get some knock off for like 10 bucks. lol. I usually lean towards more name brands s*** for a few reasons but it doesnt seem this matters all that much.
so...??
 
Cheaper cans are usually just that: an empty can with two ports (one In, one Out). The vapor travels through the can with some velocity, and if there's nothing to impede its travel, it can blow right thru the can and go right back out the Out port, ending up in the intake mani after all.

The more expensive cans have some type of baffling or screening built into their interiors to trap or "condense" as much of the oil/fluid as possible.

There's a group buy that got started recently on another board for a can by a company called Saikou Michi. Nice piece with some clever baffling solutions for around $80-90. PM me for the GB info/link, as I'm certain I won't be allowed to post details here. (Actually, this board seems a bit more strict than others I have participated in, so if the mere mention of a GB on another board is outlawed, I apologize!)
 
Whats the worst that can happen from not havig a catch can?
I never got one for my srt4.
 
Alright so for instance i dont have a catch can, car has about 12,000 miles on it I/TMIC/RP/CBE NO SMOKE....How is it some do and some dont ?

Can blowby really only effect some not others ???
 
THe catch can placed in the intake/crankcase pcv line as described in Whoosh's thread will prevent that s*** from flowing through your motor, i.e. cylinders, exhaust mani, and turbo. Probably the biggest gain is prevention of oil knock caused by vaporized oil getting into your cylinder and lowering the octane rating of the fuel. As the line comes in to the intake mani, a catch can installed here does nothing about oil in the intercooler, though in my experience with this car, that is a non-issue.

My main reason for doing it was to prevent oil knock which I believe happens randomly with this car.
 
THe catch can placed in the intake/crankcase pcv line as described in Whoosh's thread will prevent that s*** from flowing through your motor, i.e. cylinders, exhaust mani, and turbo. Probably the biggest gain is prevention of oil knock caused by vaporized oil getting into your cylinder and lowering the octane rating of the fuel. As the line comes in to the intake mani, a catch can installed here does nothing about oil in the intercooler, though in my experience with this car, that is a non-issue.

My main reason for doing it was to prevent oil knock which I believe happens randomly with this car.

great explenation!

But again how is it some may be having this issue and others not. I have no smoke and my TB is clean. Is it directly related to boost??
 
DSC02392.jpg

That's just gross. Guess I'll need to add this to the list...
 
great explenation!

But again how is it some may be having this issue and others not. I have no smoke and my TB is clean. Is it directly related to boost??

you can not say others are not having this issue unless you/they remove the
throttle body and or intake manifold and look inside it to see the excessive contamination
 
you can not say others are not having this issue unless you/they remove the
throttle body and or intake manifold and look inside it to see the excessive contamination

Right ok so now what I mean to say is what the catalyst here is it raised boost??? or some deffect?
 
If blowbye isnt directly related to increasing the boost is it not the a sign of rings&pistons getting worn?
having oil mist mixing with incoming fuel and air degrades the octane rating(as dada said) causing detonation and definate piston ring/piston failure
 
If blowbye isnt directly related to increasing the boost is it not the a sign of rings&pistons getting worn?
having oil mist mixing with incoming fuel and air degrades the octane rating(as dada said) causing detonation and definate piston ring/piston failure

The problem is a really sensitive pcv valve. Is supposed to vent oil vapors among other stuff, but we are getting too much.

Here is a good explanation of the pcv valve purpose:

"As an engine runs, gases from the cylinders leak past the piston's sealing rings into the crankcase (containing the crankshaft and other parts). This leaked gas is sometimes referred to as "blow by" because the pressure within the cylinders "blows" them "by" the piston rings. These gases include compounds harmful to an engine, particularly hydrocarbons (unburned fuel), as well as carbon dioxide and water vapor. If allowed to remain in the crankcase, or become too concentrated, the harmful compounds will condense out of the air within the crankcase and form corrosive acids and sludge on the engine's interior surfaces. This can harm the engine as it tends to clog small inner passages, causing overheating, poor lubrication, and high emissions levels. To keep the crankcase air as clean as possible, some sort of ventilation system must be present."

http://en.wikipedia.org/wiki/PCV_valve
 
The problem is a really sensitive pcv valve. Is supposed to vent oil vapors among other stuff, but we are getting too much.

Here is a good explanation of the pcv valve purpose:

"As an engine runs, gases from the cylinders leak past the piston's sealing rings into the crankcase (containing the crankshaft and other parts). This leaked gas is sometimes referred to as "blow by" because the pressure within the cylinders "blows" them "by" the piston rings. These gases include compounds harmful to an engine, particularly hydrocarbons (unburned fuel), as well as carbon dioxide and water vapor. If allowed to remain in the crankcase, or become too concentrated, the harmful compounds will condense out of the air within the crankcase and form corrosive acids and sludge on the engine's interior surfaces. This can harm the engine as it tends to clog small inner passages, causing overheating, poor lubrication, and high emissions levels. To keep the crankcase air as clean as possible, some sort of ventilation system must be present."

http://en.wikipedia.org/wiki/PCV_valve

Great but still the question remains WHY this excessive "blow-by", faulty/bad PCV as you say?...Running excessive boost/increasing the pressure in the crankcase?
 

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