Look what I just emptied out of my catch can

[genegoesfast]

This was out if the pcv side of my dual catch can built by calan. I believe im sucking oil out of the valve cover due to not having the pcv valve on the cover, yet in line after the can. Any thoughts are appreciated.

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This amount of oil is amassing after only a few days. Im looking for ideas on this issue without dismantling my whole set up which is as follows.

Pcv side: 1/8npt to 6an fitting> 6an line to catch can>6an line from catch can to in line check valve> 6an line to intake manifold.

Breather side is working correctly.

 

[Boostinsideways]

That oil is rather dark to be clean. I would have to put 3000 miles plus through my syntec to get it that dark.

 

[dsm03]

Something needs work.. that is dark, its like black coffee

 

[genegoesfast]

Yeah i agree i guess i mean its clean considering that this is supposed to be a crankcase vent (which is supposed be full of nasty crap from my understanding).

 

[Bishikid]

yea that looks really dark.... woulda though it was black coffee if you would have just posted the pics

 

[genegoesfast]

The oil on my dipstick is much cleaner, clear like it should be.

 

[romeen]

This was out if the pcv side of my dual catch can built by calan. I believe im sucking oil out of the valve cover due to not having the pcv valve on the cover, yet in line after the can. Any thoughts are appreciated.

I think you are correct on this. Others have speculated that the small brass(?) tube on the end of the PCV valve (on the side that get's threaded into the VC) is there to prevent this. Without it any oil that is running down the inside of the VC can easily get sucked through the fitting that you now have installed in place of the PCV. That small tube on the PCV valve ensures that only suspended vapors from the crankcase get sucked through.

I can understand not wanting to get rid of the AN fittings that you are currently using but other than putting the PCV valve back in it's stock location I don't see any easy way of avoiding this.

 

[genegoesfast]

Im considering jb welding a tube/snorkel from a stock pcv onto the fitting that im using already. I don't know if that seems like a viable option or if its just reatrded?

 

[Ravenous]

Does your valve cover still have the baffle? It seems like a lot of oil but Calan's coalescing filters that he puts in the catch can's are supposed to take most of the vapor out of the air... as far as I know that could be normal.

 

[genegoesfast]

Yeah the baffle is still in place. This is quite a ways beyond vapors sadly.

 

[romeen]

Im considering jb welding a tube/snorkel from a stock pcv onto the fitting that im using already. I don't know if that seems like a viable option or if its just reatrded?

I don't see why it wouldn't work. My main concern would be a worry of some of the JB Weld or the snorkel itself breaking off and getting into the oil system. Compare the o.d. of the snorkel to the i.d. of the NPT end of your fitting. You might be able to press it in and end up with a nice tight fit.

 

[Calan]

For future reference:

Your excess oil is probably due to not having the PCV snorkel in the VC. With just a fitting there, there's nothing to keep oil trapped above the baffle from flowing into the lines.

There is a lot of liquid oil up against the "walls" of the VC at higher revs due to oil that is temporarily trapped above the baffles. The stock PCV valve has a snorkel on it that extends out into empty space in the VC, so that it collects mostly vapor and blocks the oil from finding it's way into the line going to the IM.

In regard to using some kind of custom snorkel, there is some info in this article that may be helpful:

http://www.dsmtuners.com/forums/articles-miscellaneous/345125-how-make-90-degree-pcv-valve.html

 

[genegoesfast]

I actually disconnected the line going from the catch can to the intake manifold and put a small filter in its place and I haven't been sucking up any oil lately. I'm not exactly sure what that means. I think it means that calan is right.

 

[Calan]

I actually disconnected the line going from the catch can to the intake manifold and put a small filter in its place and I haven't been sucking up any oil lately. I'm not exactly sure what that means. I think it means that calan is right.

I think it probably means that you are now blocking airflow from the VC to the IM.

Try putting the PCV valve back in the stock location and see what happens. (PCV valve > catch can > check valve > IM). You can buy adapters to go between NPT/hose barb/AN fittings, so it should be pretty simple to plumb something up as a quick test.

Also, you need to remember that these catch cans are capable of collecting much more suspended oil than generic cans... so you should see an increase in what is collected anyway...although I'm pretty sure you are sucking liquid oil for the reasons mentioned above.

The good news is that the can is collecting it, rather than it going straight into your intake.