Looking for a high flow PCV valve. High quality -10 compatible would be a plus.

anyone have any suggestions?

 

Not sure that this would be high flow or the style you are looking for but

http://www.radiumauto.com/PCV-Valve-...arb-P1155.aspx

 

I have the RA evo kit for both ends. Looking to run full -10 from the intake manifold to the can, and a check valve on the side vent to get extra vacuum on this particular setups crank case

 

https://www.jegs.com/i/Vibrant+Perfo...hoC3nsQAvD_BwE

I'm going to use something like this I think

 

That will flow too much air and you won't be able to get it to idle at a reasonable RPM.

Source- I tried it. Even full -6 is pushing it, have to bottom the biss out and really mess with the idle stepper tables.

 

even with the stepper off? I dont have BISS I have a full blown 70mm.

 

With the intake tube pcv off, I dont feel any suction coming through the side port. The rear port is hooked up like OEM but with radium catch can. I actually feel pressure coming out.

Brand new BR 2.4 long rod engine ~200 miles

 

That's normal. The stock PCV has like an 1/8" port, it doesn't flow much.

I had it on a stock throttle body.
Your tb has no idle control other than throttle angle stop adjustment?

 

If you are placing a one way valve on the other valve cover vent then it should not matter the size of the line for the intake manifold PCV. This is because the intake manifold will be pulling vacuum on a sealed block as opposed to pulling on a block that is vented, which could allow it to pull excessive air and potentially affect idle. Therefore, just keep the intake manifold PCV line at the stock 5/16" size. Also, when you pull vacuum from the stock PCV tube (said to be 1/8") or the top of the manifold (5/16") it does not change the vacuum level achieved or the idle if the other valve cover vent is sealed. Again, when you pull air on a sealed block when the car is off boost you do not have much flow. Whether I hook up my intake manifold PCV or leave it plugged on a sealed block it has almost no affect on my idle.

 

If true, this would suggest that the intake manifold PCV is displacing less air than the amount of air being generated due to blow-by. If you seal the other port with a one way valve you will find the vacuum in the block will build up and in the case of my car, it takes about 20 seconds after startup for the block to go from atmospheric pressure to -5" of vacuum. See attached video.

 

It was my belief from reading that a vacuum on the crank case helps the rings seal. I believe I am getting some blow by as within a ~200 mile period I use a half quart of oil. Some is probably expected I'm just not sure the next move to fix any potential blow by and short comings in the PCV.

I am using 5/16 barn on the skunk 2 manifold which the original barbs were removed and tapped NPT.

 

Vacuum on the crank case isn't going to fix oil consumption like that. Where it helps ring seal is you'll see it pick up some power on the dyno. If it's consuming oil there is a larger issue.

 

I read several online users reporting a significant reduction in oil consumption related to block pressure and specifically pulling a vacuum on the block vs a traditional VTA approach. I do not have any direct experience on this topic, but will report back my findings based on my new setup. I found on my setup that oil consumption was significantly reduced when I switched to Valvoline VR1 20w-50 (non synthetic) vs the previous 0W-40 Mobile one synthetic as used in my GTR. My point is that oil type and weight can contribute to oil consumption from what I experienced.

 

Gotcha, I'm on 20/50 Brad Penn at the moment. It's a buschur engine they did the block and the head. I'm uncertain the tolerances they used. I will do some more analyzing and check back in.

 

The other thing I noticed is that when I drive the EVO from Charlotte to Tallahassee (~500miles) I have little to no oil consumption, but for 500 miles of in town driving oil consumption is measurable. Oil consumption seems to be increased during warmup so I keep RPM very low with little to no boost until the car is sufficiently warmed up.