lol, No s***! I'm gona have to do this.
Anyone put an oil catch can on?
- Thread starter Young Roids
- Start date
lol, No s***! I'm gona have to do this.
dadasracecar
Member
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.
mazdaspeed32007
Member
- :
- Mazdaspeed3
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...??
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!)
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!)
+1?
Young Roids
Member
- :
- The pennies have been saved the MS3 is mine!
an intercooler filled with oil is the worst that could happen.
dadasracecar
Member
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.
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??
SuperStretch18
Member
- :
- '07 CX-7 Sport, Black on Black; '04 Mazda3s
That's just gross. Guess I'll need to add this to the list...
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
lol
there was actually more than this in the can
I just dumped the remaining on this white step stool to give a good color visual
Right ok so now what I mean to say is what the catalyst here is it raised boost??? or some deffect?
has nothing to do with that'
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?
