Catch Can??

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03 Mazdaspeed Protege
I'm just wondering if anyone has tried getting rid of the PCV lines and running them into a catch can instead of into the intake manifold to help the MSP's burning oil problem. Mine burns oil, and the smell is getting old, haha. I've switched to the millenia PCV valve and that helped, but didnt fix it. It makes sense that if you just ran that line into a catch can instead of the intake, it should stop the problem. It would still lose some oil, but I check it fairly regularly, i just want to stop it from burning. Would like to know if anyone has already tried this and if it worked or not. Dont need to see pics, just want to know if it will work before i spend the time and cash.
 
http://www.mazdas247.com/forum/show...-Signature-Products-Oil-Catch-Cans&highlight=


The stock PCV is garbage, especially if you are making more power than what it was designed for. The Millenia S PCV is much better, but still has it draw backs for a catch can system. The check valve is AFTER catching the sludge with this tank, which means its never going to get all gunked up. That also means you should never have to change it. BUT, if you do, its cheaper than the stock PCV to replace, and all it requires is the removal of a snap ring.

The internals are baffled with #3 grade stainless steel wool. Its done enough to trap the sludge, but not too much to resrtict the air flow. The machined billet aluminum head is clockable to any position 360* for installation diversity. The 1/4" drain on bottom opens up for easy draining.
 
Those look pretty nice, I'll have to look into one of those. With the normal pcv setup and one of your cans, do you run the line that comes out of the top (after the filter) back into the intake? or do you just vent it out?
 
The way it works is the top fitting actuates the check valve by connecting to a vacuum source. So while cruising the check valve is pulled open, then while accelerating it closes. On a turbo motor this is especially good to have so your crankcase will not over pressurize and blow seals. When the check valve is closed, the side vent is doing all the work escaping the pressurized gasses. Thats why there are two separate tanks, the pressures are opposing and could not properly function sharing the same chamber. There is a balance between the upper and lower crank case that needs to remain equalized, so just half-assing this is not recommended. But as Cres mentioned, even the Millenia PCV does not fully cure the problem so anything is better than nothing. But the full treatment of porting the passages and adding both catch tanks is the only ideal and fully functioning cure for the problem. There is so much more to this than just catching blow by gasses and condensation; it also improves oil flow back and reduces windage. Both of which we all know is a major issue the Protege has.
 
Yeah, im with you there, i definitely dont trust putting steel wool down inside the motor, that just seems to have bad idea written all over it. I went ahead and ordered on of CR3's catch cans with similar baffling built into the can, rather than shoved inside the valve cover. We'll see how that works, I'll post back up when its on and see how it works
 
Got the catch can in this weekend and it looks great, im gonna try and get it in early this week, will post up how it turn out and if it solves the problem
 

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