Oil Catch-Can mounting ideas...

[mr_manny]

Picked up a universal oil catch-can for my bronco II.
I've added these to my last 2 vehicles, and recommend them for reducing throttle body soot.

I removed the cruise-control vacuum canister today, so there is one possible location.
If you've installed one, I'd like to know where you installed yours.

Thanks

 

[franklin2]

I only use those stinky things when I have a engine on it's last leg and won't half run because of all the blow-by overwhelming the intake system.

The PCV system is a good thing. It pulls all that junk out of the engine and lets it get burned. This reduces engine wear and makes your oil last longer. Does your catch can have a vacuum attachment?

 

[mr_manny]

All of the catch-can's I've used are sealed units, that can be opened for inspection.
They simply provide a filter after the PCV, before the vapors reach the throttle body. I check them every other oil change or so, and empty any collected oil (if any).

They could also be an additional indication of the condition of your motor.
Too much blow-by would be evident by the amount of oil collected in the catch-can.

 

[superj]

I have always used j&l catch cans but on direct injection engines since they no longer have fuel washing the back of the valves to keep them clean.

I have never used one on any other type of engine

 

[franklin2]

All of the catch-can's I've used are sealed units, that can be opened for inspection.
They simply provide a filter after the PCV, before the vapors reach the throttle body. I check them every other oil change or so, and empty any collected oil (if any).

They could also be an additional indication of the condition of your motor.
Too much blow-by would be evident by the amount of oil collected in the catch-can.

View attachment 121325

I didn't know they were still using the PCV system. That should work well. The ones I am familiar with are just a can with no vacuum, and it pukes out on the ground.

 

[racsan]

On the escape I simply zip-tied it to a open space where it would fit, ordered a new oil fill cap that I put a hose fitting in to for the hose to attach. Theres a small cleanable filter on the catch can & a dipstick to check how much fluid is in it. Ive only had this vehicle 11 months so hasn’t gotten enough blowby into the catch can to register on the dipstick.

 

[mr_manny]

I prefer to run a sealed catch-can, with it pulling a vacuum (in-line with PCV system).
No oily mess in your intake or engine bay and you still get the benefit of having your crankcase scavenged of excessive pressure.

Will post some pics, once I get mine installed.

 

[mr_manny]

I utilized the existing cruiser-control bracket, and added some adapters I made out of scrap.

The catch-can will have easy access, and the other platform will be used for an auxiliary relay/fuse box.

 

[mr_manny]

OCC is done.
Went ahead and replaced the PCV and Breather (including grommets) while I was at it.
In case you were wondering, the grommets are the same for both the PCV and OAS.

 

[tinoracha]

I am gonna be putting one of these in tomorrow!

Is this just down steam of the Oil Air Separator and before the PCV valve?

My OAS is shot and I can't find a replacement so I was gonna run a catch can instead. Thoughts?

 

[mr_manny]

Our 2.9L have Two systems.
A sealed circuit, which goes from the PCV to a vacuum port behind the Throttle Body.
A vented circuit, that goes from the OAS (Oil Air Separator) to a port before the Throttle Body.

My OCC is a sealed unit, so it's installed between the PCV and Throttle Body.
If your OCC is a vented type, it would be installed between the OAS and the port before the Throttle Body.

Take note that most OCCs have an input and output port.
In my case, the input port connects to the PCV valve and the output port goes to the port behind the throttle body.

HTH

 

[franklin2]

You really need to think of it as one system or one circuit. The PCV valve pulls a vacuum on the engine crankcase and sucks the bad stuff out of it, and the pipe that leads before the throttle body is the fresh air intake to replace the air in the crankcase sucked out by the PCV valve.

 

[franklin2]

Here's a diagram from a Ford emissions manual.

 

[mr_manny]

I thought the OAS was operating as an engine breather, not pulling air as it's illustrated in your diagram.

In my earlier post, I wanted to recognize the 2 types of OCC designs on the market.
I also would not recommend installing a vented OCC between the PCV and intake manifold...only a sealed model.

Thank You for the diagram.

 

[franklin2]

Look at this little tid bit. I kept reading down the page, I did not know this. No wonder so much gook gets into the intake system. This book is a little older and describes the air cleaner on a carbed system with the little foam pad in it. I don't think my 2,9 has any sort of filter on that pipe, it just plugs into the air duct upstream of the throttle body.