Quote:
Originally Posted by NoHaveMSG
I get what you are saying there. The issue I had with running a catch can is our engines just don't puke that much oil. So it became something that I would skip in my checks before a track day after never seeing anything in the can after half a dozen checks. So I was looking at something more install and forget on top of your design being very compact. Though in conversation with @ blsfrs he did mention the good point that you wouldn't know what it was puking if it drained back on it's own. |
I understand where you're coming from now.
I don't know what unit you were using, but our vortex design works quite a bit better than most. Cans, swirl pots, baffles, and media filled units, generally work well under more specific conditions whereas our units work well over a much wider range of flow. Did you happen to test for what may have been getting past the can you were using? There's a couple of different ways this can be done if you're interested.
From using this design with the 911 market, accumulation varies a LOT based on several factors. We have some customers that drain it every other oil change and get very little (~6,000 miles) and some who drain after a track day and get a significant amount. Based on BRZ FA24 Alpha and Beta testing, we've found the accumulation to be less than what we see on the 911s. Which makes sense because the 911s have a higher output and are turbocharged.
Functionality wise, the units work very well from a separation standpoint. As far as historical data, we started testing nearly immediately after the new gen became available, but that really doesn't tell us anything as far as how these engines change blowby characteristics as they wear, increase power due to mods, E85, turbocharging, etc... This is why we offer a single unit, dual, and for draining on the conservative side. Many enthusiasts are over maintainers, and the couple minutes it takes to check the drain is minor in comparison to the time it takes to change the oil.
Another option, which we offer to the EJ market, because some don't like draining the goo back into the crankcase and the EJs have LOTS more liquid oil coming out of the crankcase, is a remote reservoir off the drain. The plus side of doing this is it doesn't affect functionality of the PCV system like a drain back can, and you can easily make the reservoir capacity multitudes larger than what the unit itself holds.
BLSFRS does make a good point that you have no idea how much is coming out if it's draining back. Short term changes in blowby is almost always an indication of an underlying engine health issue.