Oil Breather Catch Can

My apologies if this is one of those questions asked 1000 times before, but a quick search failed to show me any.
My Z32 Track car blows oil smoke on start up after a hard sprint run - no other time. Turbo's, Valve Guide Seals etc may well be worn but in all other uses are not an issue. Its a 1996 TT engine.
It has been suggested that we re route the rocker cover breathers to a catch can rather than back into the intake as is standard.
Any thoughts / comments?
Anyone know where I can get the press in fittings I will need for the Rocker Covers?

 

For maximum effect you want to make sure you get a baffled catch can to separate the oil from the air.

 

Atmospheric venting catch cans on a Z will need a capacity of 3 liters to meet CAMS general requirements, there's an exception for street registered cars in non-race events but if you start spilling oil they'll probably be rather upset with you.

Also note that all four cam breathers/PCVs need to be isolated from the intake with an atmospheric breather system unless you're running a MAFless ECU.

 

Casual track days are usually pretty relaxed but competition needs something properly set up. A catch can is on my to-do list as well and I'm thinking a baffled can plumbed back to the intake (no breather) that drains back to the sump is my preferred solution. I'm cheap and lazy at the moment though so I haven't done much research on it.

 

I'm no expert by the way, would probably run designs past someone like Black Beast or the guys at UAS, maybe scrutineers for GB's events. It could be easier than I think it is but I'm a fairly cautious guy and there's enough stories out there of blowing oil under your own wheels.

 

I did this.New Oil Catch Tank made and installed ... PCV system IS gone

Had to relocate the Fuel Filter to the back of the car to make room.

The tank has a 13mm drain with a tap accessible from underneath the car for easy-ish access.

Now just have to source a Solid State Relay and sort it's wiring to the ECU for my new improved water injection control, then it's off to finish the tune ( seems to be a never ending process :roll: )

 

Mines simple, PCV's deleted and blocked off. Intake cover outlets with standard low pressure oil hose leading to a 3lt catch can mounted low behind the radiator. Simple and cheap.

 

I'm guessing vented can and plugged the ports in the intake pipes?

That's probably the better solution for a dedicated track car, mines street/track day so I lean towards the plumb back design.

 

Yep mines dedicated racecar. So just got a small filter on top.

For street it needs to be plumbed back or it's not legal.

 

Thanks for the pics, helps me heaps.
Where did you get the four engine fittings?
Speed flow make them but the engine side is too large for the Zed.

 

My Z is road registered but rarely driven on the road so I am intending to go with the vented can and run the gauntlet with the Dept of Transport. To be honest there are so many other things that they would be frothing over if they pulled me up, they would probably miss that on anything but a complete inspection. (LoL)

 

If you mount it down low behind the radiator like so they probably won't even see it



Edit: This requires removal of the clutch fan though...

 

Plumb it in to the exhaust. No catch can required.

 

Thanks to everyone for their help here.
What started out as an "idea" has now gelled into something achievable.
The can is over 3 litres so it will be CAMS compliant should it need be and I am tucking it away next to the intakes so its under the centre panel between the headlights.
Will post up some pics of the finished job as soon as it is .....and when I can work out how to add pics to my posts.

 

hi, sorry mate but cant get my head around getiing rid of the clutch fan?!?!
i know phisicaly possible but what about cooling the engine
sorry if i took you away from the original post

cheers

 

You'll need a good thermo and good ducting.