It's raining here too :dance:

I'm using the same set-up (vent tube filter) you have pictured with the engine on my '05 with no problems for many years - would be interested to see how your modification idea turns out as well :thumb:.

 

Using the filter on the oil filler tube has been done by a lot of folks without issue as it is only a fresh air source for the crank case. But if the PCV is blocked (sealed) then it would become the Crank Case vent.
And if the filter was then removed and the hose reconnected to the TB inlet tube creating a negative pressure, then a catch can could be placed in the line and catch any vapor that escapes the crank case. Seems simple enough...

 

How often does that filter need changed with that breather system on the filler cap?

 

Mines been on there for a couple of years, there is no residue on it. That might change with converting it to being the crank case vent.

 

Ok here's what I did to mine you can make a revision Of it for sure to work with your truck.

I melted my PVC valve shut on the crankcase end so the manifold would get no vacuum/boost at all. I then added two vents to the front of my metal valve covers and ran the. To exhaust scavengers (dragster style).

What I suggest you do is block PVC to keep oil out of manifold. Run the oil fill tube to a non vented catch can and hook it back to intake before throttle body so it will suck air as you accelerate. Then add a vent to fresh air to a valve cover so when taking off intake will pull fresh air in and bad air out thru catch can. Or you could run this setup the other way leave vent at filler add vent to cover thru catch can to intake.

That's my two cents good airflow.

 

All good ideas. I've got my spare PCV full of RTV waiting to dry overnight. Your scavenger setup is great for cylinder sealing and reduces pumping forces. Nicely done..

 

Ok, experimenting to see what works. Installed the plugged PCV the other day and have done a couple power runs to so if it vents properly. Seems to work as I expected. Bought a baffled catch can with a fairly large filtered vent. This is the same setup as I had with the smaller filter, just bigger and a can attached. We will see..

 

That will work bit at the same time there's no fresh air going in just the bad getting pushed out.

 

Good point, I could plumb the PCV or perhaps the brake booster vacuum line for a vacuum source and use a external PCV to provide a air circuit. I'll see how this does first. Actually like the exhaust scavenger setup best of all.

 

So do I vent the top the exhaust work for you lol hassle free. Periodic maintenance check of the valves and good to go.

 

Did you make your scavenger tubes or did you buy them? What check valves are you using?

 

I bought the jegs kits was 2 valves and 2 pipes think $40 or less don't remember exactly. Drill a hole at a 45 degree angle insert 45 degree tip right at collector joint on header and weld in. My two pull almost 10" of vacuum wot before them had 5-10 psi boost so they work very well. Blew the dipstick out one time made a huge mess that was the trigger for me. Eng runs better that way anyway helps rings seal

 

Gotcha, very nice setup..

 

From the other outlet of the catch can run a hose from that and connect it to your itake charge tube.

 

There are several variation that can be done in connecting the hoses. What I have is the same as having just the filter as a crank case vent. I'll eventually make it a true catch can with an external PVC by modifying the current plugged PCV into a becoming the vacuum source, filter as fresh air source, with vapor passing through the can. Mounting most anything under the hood becomes a PIA, I applaud you guys with major changes.

 

I tried 3 or 4 PCV setups before I was happy with it, eventually abondoning the header evac system all together. The check valves were failing on me in less than 500km. My recommendation for anyone boosted is to plug the PCV hole and run a vent from each valve cover to 2 catch cans that are vented to the inlet of the turbo or supercharger. No check valves anywhere and use a minimum of -10 or 5/8" lines. This way there is zero chance of failure, zero fumes from under the hood or exhaust, and automatically provided the amount of flow as needed. I packed my catch cans with 3 grades of stainless steel wool and it separated the oil and water perfectly. This is estentially the 'ultimate' setup as per the guide published by Arrington.

 

My recommendation for anyone boosted is to plug the PCV hole and run a vent from each valve cover to 2 catch cans that are vented to the inlet of the turbo or supercharger.

I like it!!!!! Very simple.:thumb::thumb::thumb:

 

I have a small mill at my
Disposal maybe I could make a small twist I'm plug for the 2003 PVC setup that would allow you to run a line off it as a vent only blocking off the vacuum. Just throwing stuff out there.

 

Great ideas, I like experimenting and will see what I can do with modifying the PCV making it a vacuum source.
Thanks,

 

Took a spare PCV and removed the piddle and spring. Drilled through the bottom, putting a hole through the top. Removed the center of the handle and cut a metal barb fitting I had laying around and aligned the barb fitting and hole using a old drill bit and filled the recess with JB weld. It's curing now. This should provide an excellent source for the vacuum for an external PCV. None of this should make a real difference with the exception there should be next to no oil vapor being sucked into the intake manifold. I'll post pictures as it comes together.

 

do you have any pix of this ? I need to do something similar. The amount of oil I'm sucking through the pcv right now is horrible. I want to block off the stock PCv and go with a VC mounted one, plumbed through a catch can. Then just do a 2nd catch can w/filter, on the side, as a fresh air source. I need to add 1qt or more per week. Compression tests and leakdown tests are all good. This is a new build with less than 20K on it. The PCV is the only place I can see it going. There's no oil in the coolant, and I'm not leaking anything.

 

Like I said May be able to make some fittings out
Of aluminum fairly cheap have a small lathe. Of that works Gregg and you would like something like that made let me know.

 

Like I said May be able to make some fittings out of aluminum fairly cheap have a small lathe.

How about an oil fill cone and cap like the one on your xv manifold? Just a little bigger oil fill cone?

 

Keith, much appreciate the offer. I need to experiment with the configuration a little before I decide what I want to do.

 

Ok cool.

 

Won't be able to thread it at all tried for my truck lol didn't work

 

:sad: Might be able to have a fitting tig welded to it though.

 

JB weld is cured this morning. Need a external PCV now.

 

Nice :thumb: