I ordered a oil separator can from Summit Racing on Sunday and just got it today. It pretty much replaced my catch can which was pretty pointless because under boost, the PCV valve was shutting anyway causing crankcase pressure build-up and a lot of blowby. This can is made by Moroso and cost me around $70. All I can say about Summit Racing's customer service is good things. It was a great experience, especially right after having a terrible experience with kteller just a few weeks ago.

To get it working correctly, I had to fully take the old catch can nonsense out, plug the hole on the intake manifold, fully gut my $3 purcolator PCV valve so it functions as merely an elbow, run the line to the can and secure it. When the pressure builds up, it flows into the can where the baffled design allow oil to separate from the air and drop into the can and the air to flow out of the filter.

I know it is horrible for the environment, but I have the Greddy kit and a functional cat in place, so 2 out of 3 ain't bad. h:

I will have to test it out a little longer to see if it helps, but it seems to be a good way to evacuate the PCV gases in a turbocharged application.

 

looks good man!!

 

before reading the thread, the picture kinda confused me. however it looks good man! nice and clean as well!

 

so with out one what happenes....still lost here
BUT it looks good man

 

there are gases that build up in the head from combustion, the PCV merely lets them out. what is supposed to happen is that the gases are to be sent back into the intake where any unburned stuff can be burned during combustion and anything else can be passed through the exhaust to the cat and so on.

there are many disadvantages to this, becuase less air is getting in and whatever else you want to say, it's just not good sense to have anything but pure air and gas going into the cylinder for combustion if you are looking at it from a performance and even reliability standpoint--

so to recap this is what happens: A)relieve gases from the head B)send them back through combustion to be burned off/cycled through the cat/ etc.

in this system shmoo is relieving the gases but not recycling them to get burned off.

 

It actually won't cause many problems being recycled back into the system, but you will have to rig up a slashcut in the intake or exhaust to introduce a vacuum that sucks the pressure out of the crankcase. The only problem I can see is buildup of oil residue on the charge piping or exhaust.

The main problem isn't the gases, but the PCV valve that shuts under boost causing that gas to build up pressure and cause poor ring seal and oil burning problems.

 

so this is going to happen when i hit boost then? isnt this bad for the motor?

 

It won't kill the motor, but it isn't good for it. If you notice that you are blowing a lot of smoke under boost, this is probably the reason.

 

Should this be taken care of now? While the motors apart or since it wont hurt the motor then dont bother. IS this more of a petpeiev kinda thing?

 

If you have $80 plus the cost of hose to do it, I would recommend it.