AMW PCV Oil Separator (CLOSED)

95_XR7

Registered User
If you guys were actually man enough to keep the AC in your car, you'd know that neither the air divider or AC mount (obviously) will work.:p

I like the wording of that Kurt. Haha. Anyways, any idea where it WILL work with A/C? I really don't plan on removing the AC in the '95 anytime soon. Cars far too perty to start tearing apart.

-Corey
 

Kurt K

SCCoA Member
I like the wording of that Kurt. Haha. Anyways, any idea where it WILL work with A/C? I really don't plan on removing the AC in the '95 anytime soon. Cars far too perty to start tearing apart.

-Corey
Looks like it will fit on the passenger fender, in front of the overflow tank (early model). Unfortunately, there won't be enough room to use the petcock drain, so I will have to remove the separator to drain the oil.
 

pablon2

SCCoA Member
Looking to mount mine in the next day or so. I'm thinking of utilizing the bracketry left from when I removed the AC accumulator. I think that is what it is called. Black, metal, and sits in the rear corner of the passenger side of engine bay. This will greatly reduce the amount of hose I need to run. For those that have been running their set-up, have you checked as to how much oil has accumulated over time? (miles driven or hours of operation?). I imagine each engine set-up may have a slightly different amount of oil production, but in general I would hope they'd be pretty close.
 
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pablon2

SCCoA Member
Got around to geting mine installed this weekend. Just mounted it on the MP cold air divider. Zip tied the hoses together and also zip tied them to the hard coolant line for support.

Install note is that the fittings are shipped loose. I had to add teflon tape and tighten them up.

I see no one asked this yet.....the instructions mention running a "check valve for forced induction systems (centrifugal/turbo)". Is this not needed on the roots-style system?
 

Mike8675309

Registered User
I believe the check valve need is for forced induction where the vac line from the catch can is routed to a port that can see positive pressure. I.e. if you had a Vortech and mounted the vac out line after the outlet of the vortech.
 

David Neibert

SCCoA Admin
I believe the check valve need is for forced induction where the vac line from the catch can is routed to a port that can see positive pressure. I.e. if you had a Vortech and mounted the vac out line after the outlet of the vortech.

Correct, since our PCV valve plumbs to a port on the inlet plenum where it's not possible to create any positive pressure, the check valve isn't needed.

David
 

pablon2

SCCoA Member
Correct, since our PCV valve plumbs to a port on the inlet plenum where it's not possible to create any positive pressure, the check valve isn't needed.

David

My set-up has a tube running from the intake elbow (metal tree on backside of elbow with two spigots) to the backside of the inlet plenum. Makes me wonder now if the plenum sees positive pressure since the elbow is under boost. Anyone know what that tube is for?
 

rzimmerl

SCCoA Member
A pic would help figure out your setup.

I set mine up so it has a dedicated fitting on the intake plenum of the AR, with nothing else attached to it.
 

pablon2

SCCoA Member
A pic would help figure out your setup.

I set mine up so it has a dedicated fitting on the intake plenum of the AR, with nothing else attached to it.

Yep, mine runs from the lower fitting of the oil catch canister to the plenum (second pic) with a tee (third pic) for the line that runs to what I believe David N said was the fuel charcoal canister. I'm talking generalities about a tube (first pic, second fitting from the bottom on the plenum) that runs from the intake elbow to the inlet plenum, aside from the AMW apparatus. It is related though to the AMW setup if the intake plenum sees positive pressure via the latter tube I mention.
 

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rzimmerl

SCCoA Member
I wouldn't think that cross tube would be enough to pressurize the intake. I removed that cross tube on mine, and plugged the port in the return plenum.
 

Mike8675309

Registered User
I'm sure the issue is that the unit isn't designed to withstand significant positive pressure. Thus they don't want someone plumbing it to the pressure side of a blower where it might see more than a few inches of mercury in positive pressure.

I think you're o.k. paul.. That hose looks a titch long though causing that kink in it.
 

Mike8675309

Registered User
Go my unit mounted today. I've been working on a new air divider that would be sturdy enough to mount the oil separator to. I still need to run the lines, but I'll do that once I can put the rest of my top end back together.

2010-06-13114420.jpg
 

David Neibert

SCCoA Admin
Follow up: I've had this catch can on the car for about 600 or 700 hard miles that included numerous dyno pulls, a couple trips to the track, a couple road tuning sessions, and a 150 mile long car cruise this past weekend.

I had one of the IC tubes off last week installing a new set of plug wires and didn't see any of the usual oil residue, which was nice. Decided to take a look inside the catch can yesterday and see how much if any oil had collected. I drained about 2.5 OZ of nasty looking oil that smelled strongly of fuel, so it's working well.

David
 
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