What would be the best way to tie in the clean side of my PCV? My new WARR throttle body does not have a port. I understand it needs to be after the MAF, correct? Is there a way to put a barb on the silicone bellow?

FYI, I'm running a LS6 valley plate and dual catch cans.






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you need a fresh air line. so take that line from the valve cover and stick it somewhere after the MAF but before the throttle body plate.

the clean side can go to a port on the intake manifold, or the throttle body as long as the port is behind the plate. anything that sees vacuum.

not really sure why you have the second can, though.

 

As you said the clean air supply should be after the maf but before manifold vacuum. Taking it from the bellows seems like the most reasonable option for you. Other options would be a tb with the vent port or SD tuning to eliminate the maf and you could just have a breather.

I take it the picture is your current setup? The diagram you posted looks like the correct hose routing but what you have plumbed currently doesn't seem to match the diagram.

 

There's a check valve on the clean side that I may or may not remove. Did you see something else?

 

What kind of barb can I use to put in the bellows?

 

Something like this to tap in perhaps:

https://www.summitracing.com/int/par...illocation=int

I marked up your picture with what I think matches the hose routing shown on the drawing you posted.

 

Oops. I fixed that last night after the above pic was taken. Also, I haven't yet figured out how to properly mount the clean side can.

 

Here's the part I need. It's a bulkhead fitting. I'll just cut the barb off the one end and Loctite the nut on.

Beduan 5/16'' Hose Barb Thru-Bulk Bulkhead Straight Hex Union Stainless Steel Fitting

 

No need for clean side to be after maf. . Clean side air doesnt ingest in combustion. Clean side to air intake after filter.
A good idea is to put one way breather on oil fill so when the system cant keep up when under high load it'll vent to atmosphere.

 

But it's effectively the same air that the dirty side is putting back into combustion. No?

 

No because clean air side draws air into the engine, not thru combustion. Occasionally you may get blow back but no need to worry on rare occasion it does. Also you dont want vacuum at all on clean side

 

Also you dont want a check valve on clean side unless its stopping air from blowing back

 

I have tried heaps of different catch can set ups and how i have it set up now is by far the best.
Clean air from air intake behind filter to left side head.
Dirty side from oil fill to catch can with one way breather on top, check valve on can to valley.
acts like OEM while cruising . under vacuum. Then when into it vents to atmosphere...no oil in intake manifold at all....
Also stuff your can with stainless pan scrubber

 

I'm trying to understand why others say it matters, not saying you're wrong.

The dirty side is putting combustion air into the engine AFTER the MAF, thereby leaning the tune. Even though the clean side goes to the crankcase, it should be roughly equivalent to the dirty side air. When it is being plumbed after the MAF, you're correcting the amount of air actually going into combustion. Is this correct?

 

I was looking at a turbo setup when I did that.

 

sorry I'm wrong. U hv maf so yes after maf

 

got pics!

 

Clean side

dirty side

 

Okay so a line off the oil fill cap to the breather can and a smaller line from the breather can to the valley cover. Do you have any lines connected to the intake manifold?

 

I see the line on the drivers side coming from the air box into the valve cover but again are you connected at all to a vacuum source on the intake manifold?