Streetcar! how much oil in catchcan?

[Justin Lauscher]

So I'm finally installing a well needed catch can on my 1g, I decided to go vented. (let the hate begin) I have 2 10an lines that will be going to it and the car will be daily driven, how quickly will I end up having to empty it? What's everyone's experiences?

 

[Dsmkauai]

On a good running car almost never. If you have blow-by then more often

 

[SOADweskey]

To add to DSMkauai's post, if you still have a baffle in your valve cover then really almost never. I get a few drops out of mine every few months. Mine is a single -10 going to a baffled can and then back to my intake pipe pre -turbo.

 

[diambo4life]

While the catchcan should barely have any oil in it, it will capture condensation and other products of combustion ESPECIALLY if you run E85. It will need to be emptied, regularly.

 

[Justin Lauscher]

Okay thanks guys, I do still have the baffles installed, but one fitting is punched through the baffle. It is angled more up though so hopefully that doesn't let as much oil through to the can. And I will be running e85. Fun stuff!

 

[SOADweskey]

I only run e85 in my car, daily driven about 500 miles a week and I've never had a catch can fill with oil, condensation, or anything else. As stated I check it every few months and it usually contains about a quarter of a shot glass worth of liquid.

 

[Justin Lauscher]

I only run e85 in my car, daily driven about 500 miles a week and I've never had a catch can fill with oil, condensation, or anything else. As stated I check it every few months and it usually contains about a quarter of a shot glass worth of liquid.

Care to share if you have baffles, line size, ring gap, and power levels?

 

[ErikTande]

I get an e-85/gassy liquid mix with a small topping of oily brown milkshake after a few months.

 

[SOADweskey]

Care to share if you have baffles, line size, ring gap, and power levels?

Still have baffle in my valve cover, a single -10 line, don't remember ring gap off the top of my head, about 450 hp.

 

[91talonts1]

The condensation filling the cans on e85 is heavily dependent on ambient temp for me. Below 40*F I get a fair amount, I barely get any in the summer months. I also got much more on a vented setup than the sealed one.

To the OP I ran a vented setup on the street for years, and I never had any problems with crankcase pressure. I will say the oil gets contaminated very quickly, even more so with e85. That's the only reason I went to a sealed system, running detergent free racing oil, I never left the same oil in the car longer than a month (maybe 500 miles tops) and it was always more contaminated than I would've liked it to be. Pulling on my main can with the turbo inlet helped tremendously. What I'm saving on oil changes has more than paid for the new catch can setup .