Saikou Michi catch cans? Info/pics wanted

[ultimateirving]

Originally Posted by BlackZenkiS14

PVC is only a few thousand miles old

But yea, bought a Saikou Michi catch can, was a little over 100 shipped, not bad, same price as anything else, and this is a custom handmade quality part.

Croustibat, thanks for your opinion, and I'm glad you don't feel the need to run one on your car. On my car, I'll have one. And it won't hurt anyone. this thread wasn't at all asking if I needed a catch can, but I'm glad you over explained yourself for no reason lol

Your smart enough to run one BlackZ, And crousti can you name any valid reasons why not to run one?
Because other than having to empty it i cant think of a detriment..

[Croustibat]

Originally Posted by ultimateirving

Your smart enough to run one BlackZ, And crousti can you name any valid reasons why not to run one?
Because other than having to empty it i cant think of a detriment..

Actually I have 2 reasons to run the "beer can" + mesh. And a third to run an open system, although that is not related to pennyless catch can vs expensive catch can, it is more related to plumbing.

So, reasons :
1/ cost. Empty beer can is free.
2/ similar, if not identical, efficiency.

Now pros and cons of closed system :

Pros :
- closed is environmentally better. You get to recycle or condense oil vapors instead of dumping it in the air.
- no water can enter the system at night.
- you dont need to empty it / check if it is full. It is nearly maintenance free.

cons:
-condensed oil has lost its additives. It lost quite some lubrication properties and temperature resistance.
-you cant catch all the oil vapors, and some will go in the intake, which does lower octane rating and create deposits when it burns. Oil vapors are mostly created when the car is thrashed, and this is exactly when you dont want your octane rating to go lower, as you might be at the verge of detting. In any case it is a vicious circle, the more vapor reaches intake, the more gets produced basically, the more you are lowering octane rating. Until overheat or holes in pistons/destroyed ringlands happen. So yes, a bit less reliable than an open system.

-plumbing is more complex. On a MAF system, it means more leaks opportunities (and it WILL leak at some point, it just is a matter of time). MAP/IAT would be OK.

-if oil pools in the tank and gets sucked, by the intake, it will syphon the sump. Oil will then go by the breather and into the intake manifold. It equals dead engine in a matter of seconds. Usually happens when there is a venting problem, or too much oil in the engine. It is pretty rare, but it does happen. On diesel engines it really is even worse, as there is no butterfly; the engines goes "full power" for some minutes, then dies from oil starvation.

I do prefer my intake air without oil, and i'd be running an open beer can system if i was not so lazy. Instead i am running a 20$ ebay jobbie that came with a gauge, 16mm in/out, an emptying bolt and some bracket.
I added some metal mesh in it, and there i go.

Can hardly go cheaper, and it works like i want it to work.

There is no harm in wanting a clean, high quality closed system. You just have to know the difference between closed/open and cheap/expensive solutions, and chose according to what you accept.