Crank case pressure

[Got Boooost]

Hey guys, I was on the dyno yesterday and on my last run the oil dipstick popped out about 1/2 way, luckily it didn't spew any oil, however on my ride home it did pop out a bit and spray a little oil. I was on the dyno 2 months ago and tuned the car to 20psi with no problems. Yesterday we tune to 29 psi with meth. My motor is rebuilt 4 years ago with 10-15 thousand kms on it, I'm also running 2 oil catch cans. My oil dipstick was new with the rebuild along with an oe pcv. My compression #'s are good with in 5 psi of each other and leak down test is under 10 percent. So my question is being I'm running 2 catach cans and a pcv, should I eliminate the pcv all together and put a 1/8 npt fitting in there? I'm not sure why my dipstick popped so I think I should start there, any other recomendation?

Also here's the link to how I installed my 2 catch cans step 1

http://www.dsmtuners.com/forums/articles-engine-fuel/366890-4g63t-pcv-system.html

 

[Calan]

The one catch can hooked up with the pcv I'm running a 3/8 vaccum line, the second catch can I'm running a 5/16 vaccum line.

I've thought about it a lot, more flow and more vacuum is the only solution that makes sense. You mentioned a new Valve Cover, did you have it modified for more flow to the catchcan/intake?

This is most likely your biggest issue IMO.

A single 5/16" line coming off the VC provides very little cross-sectional area for airflow; .077 sq. in. to be exact. Compare that to a couple of 3/8" lines, which would give you .221 sq. in. of cross-sectional area.

 

[greengoblin]

Two -10AN fitting on top with a good baffle system and you will be good to go. It's best to not put the fitting in the OEM location or even on the top at the very end. You will want to move them in a bit. That way if you get oil stacking up in your head on long sweeper turns it will not get sucked up into the lines.

This is how I dd John's VC.

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