Leroy Amy

Want a DIY catch can.

MARSC6

I was looking at moroso remote oil separators. They also have some with a filter mounted on top so a return line isn't needed. part # 85470

davekp78

Do a search in the C-5 section. Lots of stuff there.

5 Liter Eater

Go to Home Depot or Lowes and get a Campbell Hausfeld air compressor separator. Get two and put them in series. Leave the stones in and set them up in reverse flow direction.

haljensen

Cambell/Hausfeldt in my '05, less than $25. I DID NOT reverse flow on this installation or any other installations on turbo Dodges. The flow is from the fitting below the intake manifold thru the filter to the fitting behind the throttle body. The filter is marked for direction of flow.

5 Liter Eater

My setup looks exacly like Hal's except I have to filters in series and I don't have a fancy bracket. I do get about 1/4 of whatever is in the first filter in the second one so it is doing something.

The flow direction of the CH catch can is a long debated topic. My take is that the indicated flow direction (which has the air entering into the bowl and leaving through the stone) is supposed to create a centrifuge type effect to wick the oil from the air but in our use the airflow is not fast enough to create this effect. The stone is doing all the filtering but it's the last thing the air/oil goes through before exiting the catch can. So by reversing the flow the air/oil mix enters the stone from the top, the oil gets wicked out by the stone and the air enters the bowl and leaves (into the next stone in my case).

I don't believe either method is "wrong". Obviously both ways trap oil. It's probably worth trying both ways for a period of time to see which traps more. If you're looking for a cheap catch can setup I highly recommend the CH.

kelp

$25? you blew the bank! No wonder the economy is in the state it's in! Mine was $9. Although I did get fairly lavish and have a valve and a drain straight into the oil pan.

Edit: I should have included this photo, (too busy):


Also:
I put a restrictor valve in CC #2.
Never had a clogging problem, but always watch it.
The drain & valve, put on later is at bottom of CC#2
Later I added one way valves to both.
(...I guess I did spend $25 after all!)
Route PCV directly into manifold - will give you -15 pressure vs -8 (at idle)
I have a vacuum meter on my crankcase for this reason.
I know it's a little different, but it works real well.

haljensen

The bracket, filter, 6 fittings, hoses and clamps = close to $25, I didn't keep the receipts and had some parts on hand. Still much cheaper than any Vendors setup (no Corvette tax).

Joe_G

Hal Jensen nice looking set up!

I hesitate to post this as I think ECS or another forum vendor told me I was Full of $hit....but I'm just not 100% sure...so I'll solicit other opinions:

I put a Cambbell Hausfeld filter on my H/C C5 with stone intact, reverse flow. On my first HPDE track day after the install (about 4 months after initial install) I blew out my front seal resulting in a bad oil leak. My buddy with twin CH catch cans blew his front seal on the same event. I also had a glass fuel filter on my PCV intake hose, but it never got oil in it with my setup.

I suspect my stone got clogged with oil and my crankcase pressure at HPDE needed to go somewhere (high rpms WOT followed by high rpms no load going into turns...all day long) - thus with the stone clogged the blowby couldn't get into the intake where it would normally go...and it took the path of least resistance which was my front seal. Unfortunately my car got stolen 4 days later so I never got to investigate this further.

5 liter eater would appreciate your views (and others) - you helped teach me to tune BTW via your posts so thanks for that! I've not run a catch can on my C6 and only get a tiny bit of oil (I've swapped intakes 3 times).

CMY SIX

$50.00 from revtech engineering check c6 parts early feb. they were running a special