catch cans

[captndave737]

I set up 2 air oil separators or catch cans whichever you prefer. One is for the PCV system and the other for the valve cover breathers. I made a mounting bracket which goes on the back of the radiator.

The valve cover breathers still utilize the intake on the turbo inlet bell. I turned the bell 180 deg. to make the plumbing easier.

 

[psycho6cyl]

Which catch cans did you use?

 

[captndave737]

I used the el cheapos from Jegs.

 

[TurboBuRick]

Great idea but the catch cans you are using are way too small specially for vc breathers.

 

[1KWIKSIX]

Be careful to check those chromed valve cover breather / caps to ensure they flow / breath easily. I had a pair of them that look exactly like yours (not sure if they were Moroso or not), however I found out (after my crankcase was pressurizing under boost & oil blew oil out of the oil fill tube) that these were the cause of my issues. At least it did a good job of rust proofing my engine compartment. LOL

Took me a while to figure out where the problem was originating. Tried to blow through the valve cover caps & could not. Best to double check your set up ahead of time. Give em a blow to be sure.

 

[1KWIKSIX]

I ended up using a pair of PCV catch cans from AMW (Accurate Machine Works). Had to make up a mounting bracket for them both which is mounted to the inner fender well. (Not much room to be able to find a decent spot to mount these in the engine compartment).
Used AMW's standard PCV catch can with 3/8" line for the PCV system ( with check valve) & modified the other can for venting the valve covers by machining thread to 5/8" FPT. I went the cheap route & simply used 5/8" heater hose & -10AN x MPT valve cover adapters from Metco & -10AN push fit 90's on each valve cover, then Tee'd em together & ran em into the catch can & back into the MAF Pipe .
The picture of my set up below shows how I first had it installed, but have since changed the valve cover lines to 5/8" = same ID as -10 hose.


http://www.accmachtech.com/catchcans.asp

 

[captndave737]

The setup is the same as in your schematic. I'll see how they work and go larger on the vc side. I had read somewhere here that someone had good luck using basically the same thing but they were compressor driers from Home Depot.

The breathers are open. They are Morroso's and have no filters in them.

The second car I ever owned, a 64 Galaxie 500 would have the oil all over the engine compartment every time I drove it. I was putting in a quart every 200 miles. The dipstick was always out when I checked it. I'd rev the engine and look for the leak and couldn't find it. I finally decided to chock the wheels and put the parking brake on, put the car in drive and checked it that way. When I revved the engine it was like a firehose of oil in my face out of the dipstick tube. I learned about the crankcase breather that day.

 

[captndave737]

I ended up using a pair of PCV catch cans from AMW (Accurate Machine Works). Had to make up a mounting bracket for them both which is mounted to the inner fender well. (Not much room to be able to find a decent spot to mount these in the engine compartment).
Used AMW's standard PCV catch can with 3/8" line for the PCV system ( with check valve) & modified the other can for venting the valve covers by machining thread to 5/8" FPT. I went the cheap route & simply used 5/8" heater hose & -10AN x MPT valve cover adapters from Metco & -10AN push fit 90's on each valve cover, then Tee'd em together & ran em into the catch can & back into the MAF Pipe .
The picture of my set up below shows how I first had it installed, but have since changed the valve cover lines to 5/8" = same ID as -10 hose.


http://www.accmachtech.com/catchcans.asp

You're right about there being little room in the engine bay.
That's a nice setup. I know you made the bracket that attaches to the fender well but what about the bracket that goes around the cans themselves? They look custom as they are angled. They also look like they are machined aluminum.

 

[GNONYX]

Here's another thread of more of the oil catch pan
http://www.turbobuick.com/forums/threads/installed-an-oil-catch-can-today.392886/

 

[captndave737]

I ended up using a pair of PCV catch cans from AMW (Accurate Machine Works). Had to make up a mounting bracket for them both which is mounted to the inner fender well. (Not much room to be able to find a decent spot to mount these in the engine compartment).
Used AMW's standard PCV catch can with 3/8" line for the PCV system ( with check valve) & modified the other can for venting the valve covers by machining thread to 5/8" FPT. I went the cheap route & simply used 5/8" heater hose & -10AN x MPT valve cover adapters from Metco & -10AN push fit 90's on each valve cover, then Tee'd em together & ran em into the catch can & back into the MAF Pipe .
The picture of my set up below shows how I first had it installed, but have since changed the valve cover lines to 5/8" = same ID as -10 hose.


http://www.accmachtech.com/catchcans.asp

The Morroso breathers i have offer no noticable restriction in either direction but I still blew out my dipstick. I'm sure it was the cheapo catch can was too restrictive. I just tee'd the two breathers together and ran them to the turbo bell inlet and no more blow out.

The one on the PVC side worked fine and I do get quite a bit of oil in it. I just bit the bullet and ordered 2 of the AMW catch cans and I will modify the VC one for 5/8 hose as you did. Thanks for your input.

 

[1KWIKSIX]

You're right about there being little room in the engine bay.
That's a nice setup. I know you made the bracket that attaches to the fender well but what about the bracket that goes around the cans themselves? They look custom as they are angled. They also look like they are machined aluminum.

Those angled brackets are machined aluminum & come with the AMW catch cans. I just had a machine shop fab up a bracket that was bent to fit and had it powder coated before I installed. The set up works great. You will need to have the top of the catch can & body opened up to accept the larger thread for the 5/8" hose barbs.

 

[SCOOBY DOO]

Catch cans are a band aid solution for a blowby issue. I pound 28 PSI through my engine and the breathers are dry.

 

[1KWIKSIX]

I don't wanna run open vented breathers on the street...M.O.E. fines at over $300 per open filter. I can see using them for the track though.

 

[Pronto]

Catch cans are a band aid solution for a blowby issue. I pound 28 PSI through my engine and the breathers are dry.

Pull off your throttle body and take a picture.

 

[SCOOBY DOO]

Pull off your throttle body and take a picture.

I did last fall...and it was clean. If you've got oil dripping from your breathers or the dipstick being pushed up under boost...then you've got issues.

 

[Pronto]

Yes I agree with that but oil vapor will always be present unless you use a catch can. I prefer to use the PCV system so I want to eliminate as much of the vapor drawn into the intake as possible. It's been proven even brand new engines from the factory benefit from catch can.

 

[captndave737]

I used open breathers when the car was new and I couldn't stand the smell of oil vapors when I opened the hood so I went back to stock. Now I'm using dual catch cans and a closed system like 1KWICKSIX.