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I'm adding an A&A kit in a couple weeks and read until my eyes bled on this. Amazing how different the opinions are, for a collection of supposedly knowledgeable enthusiasts (for the record, I'm an knowledgeable enthusiast). The strongest supporters also happen to sell them in many cases. The guys who build the kits/do many nationwide installs vary on this as well, essentially saying its a owner's call. Not one has said it's a must have, at least that I've found. Some motors need one worse than others as well it seems.
Not many say it's a bad idea though, except for the possibility of restricting vacuum or being the guy that doesn't empty the can. And I found it hard to dispute (and so did everyone they challenged apparently) all the tech arguments posted by CoSpeed, one of the can vendors.
After all my homework, I'm going with either Colorado Speed or the Elite II system, both with the clean side separator.
Oh boy, yet another catch can thread. I have the RX Catch Can. I know the OP wanted info regarding supercharged application, and mine is not, but I could not resist posting this picture for all those here that poo-poo the need for a catch can - and yes, that include the GM engineers. This was what dumped out after my oil change this week. About 6 months and only 1500 miles of street driving since the last dump of the can.
I am certain that would be very good if this garbage were shoved down the intake.
If I already have your "Mild'' Can on my c7, when I add the blower do I need to get the wild version? Would I need 1 or 2?
Sorry I thought I got to this the other day, send me pm or email to mightymousesolutions@gmail.com My 'mild' system by itself raises the hp capacity of the system and defends against crankcase boost with the built-in pressure release, so I would say you could likely be fine, certainly do not need to get a second can, and the one you have can be upgraded vs. sold anyhow Single can systems max at 1500hp unless we are fighting some unusual circumstance.
Originally Posted by ChiefP
I'm adding an A&A kit in a couple weeks and read until my eyes bled on this. Amazing how different the opinions are, for a collection of supposedly knowledgeable enthusiasts (for the record, I'm an knowledgeable enthusiast). The strongest supporters also happen to sell them in many cases. The guys who build the kits/do many nationwide installs vary on this as well, essentially saying its a owner's call. Not one has said it's a must have, at least that I've found. Some motors need one worse than others as well it seems.
Not many say it's a bad idea though, except for the possibility of restricting vacuum or being the guy that doesn't empty the can. And I found it hard to dispute (and so did everyone they challenged apparently) all the tech arguments posted by CoSpeed, one of the can vendors.
After all my homework, I'm going with either Colorado Speed or the Elite II system, both with the clean side separator.
Yep. Go with independent research. Learn what you want and what you need, the differences (they are not all the same or do the same), and listen to what those invested before you have to say.
I would not let anyone that sells catch cans for a living tell you which one is the best. (I sell catch cans for a living) Listen to satisfied and dissatisfied customers.
Originally Posted by c0ke
What exactly is a clean side separater? does anyone have any pics?
When the crankcase becomes pressurized the flow direction in the 'clean side' reverses, likely dragging oil along with it.
The MMS cans happen to release crankcase pressure directly from the source. Because this pressure never builds, it is never redirected, it does not contaminate the clean side, and does not require more parts be purchased to deal with it.
I think the two most popular brands in use with non-supercharged applications are the Elite E2 (happens to be the one I use), and the RX Speed Works. The speed works has a valve to empty it, the E2 has a removeable bottom section (unscrews) to empty.
Both have available with a clean side oil separator for the dry sump models.
If you have a supercharger, it seems the breather tank setup is more popular. The two most popular I have seen discussed are the Lashway Motorsports (LMR) version, and the Florida Speed and Power (FSP) version. I think FSP may be out of business now though... not sure.
Why do the dry sump models need a clean side separator more than a non-dry sump?
Wouldn't the dry sump engine have a lot less oil mixing with the blow by so less need for a catch can?
Why do the dry sump models need a clean side separator more than a non-dry sump?
i have not seen this to be true unless the oil tank was overfull.
aside from crankcase pressure to push the oil out, the only other thing that causes clean side contamination on its own would be an undersized or dirty air filter, that sucks the oil out. (This is an air filter problem not a catch can or engine problem).
well yes and that it works in ways that other cans are not capable of
all us catch can guys have a secret recipe inside our cans, mine has 4 stages
1. a wall that fast moving fumes will slam into, driving some liquid out
2. metal mesh to provide surface area for slower moving mist to condense
3. series of straining plates to improve collected liquid splashes and drips from creeping up
4. optional high efficiency exit which filters to 100 microns
just keep in mind if you open the can, the rainbow beams will escape and the unit must be destroyed!
The other thing I have read is we don't want to restrict flow through the PCV system and build pressure. David's video shows that going to larger fittings makes a big difference with flow. He shows the air release can let off excess pressure especially when dealing with boosted applications.
Single can systems max at 1500hp unless we are fighting some unusual circumstance.
