for anyone that has crankcase pressure issues
I talked with MrFred a bit about my setup and this is what I've come up with as a start. Since the factory setup under boost only has the one vent (PCV close) which is tiny, I think opening up the 2nd port with a -10 will by itself be a massive improvement.
I don't really want to VTA though I might temporarily till I get another port on the intake pipe. This way will let me keep PCV function, and vent through a -10 port to either VTA or Intake. Crankcase vent side will just have the standard STM -6 port added and ran like factory to intake pipe.
All the parts are on order, just gotta play the waiting game.

I don't really want to VTA though I might temporarily till I get another port on the intake pipe. This way will let me keep PCV function, and vent through a -10 port to either VTA or Intake. Crankcase vent side will just have the standard STM -6 port added and ran like factory to intake pipe.
All the parts are on order, just gotta play the waiting game.

The dipstick is ok.
I have read so many post, and so many different answers, I'm not sure what to do :S
EvoM Guru
iTrader: (50)
Joined: Mar 2006
Posts: 9,675
Likes: 132
From: Tri-Cities, WA // Portland, OR
If you pull off the intake pipe and find oil, then better ventilation is definitely needed. If no oil, then I think the smoke from the exhaust is being caused by something else.
I'm not sure of it smokes when crusing, a friend told me once, but I haven't seen it in reaerview mirror
On WOT I saw ir once in the mirror
I will pull the intake and check for oil, and then see what needs to be done.
If it is crank case pressure, can it damage the turbo?
Thanks
On WOT I saw ir once in the mirror
I will pull the intake and check for oil, and then see what needs to be done.
If it is crank case pressure, can it damage the turbo?
Thanks
I'm not sure of it smokes when crusing, a friend told me once, but I haven't seen it in reaerview mirror
On WOT I saw ir once in the mirror
I will pull the intake and check for oil, and then see what needs to be done.
If it is crank case pressure, can it damage the turbo?
Thanks
On WOT I saw ir once in the mirror
I will pull the intake and check for oil, and then see what needs to be done.
If it is crank case pressure, can it damage the turbo?
Thanks
It won't damage the seals, they're designed to relieve the excess pressure. Is what can happen is the leaking oil can coke up behind the turbine heat shield and can eventually cause the heat shield to rub on the turbine.
I like this concept as it might not require mods to the valve cover, but still gets you a flow improvement.
Are you doing anything about a catch on the Valve Cover side?
Mind posting a BOM?
Are you doing anything about a catch on the Valve Cover side?
Mind posting a BOM?
I talked with MrFred a bit about my setup and this is what I've come up with as a start. Since the factory setup under boost only has the one vent (PCV close) which is tiny, I think opening up the 2nd port with a -10 will by itself be a massive improvement.
I don't really want to VTA though I might temporarily till I get another port on the intake pipe. This way will let me keep PCV function, and vent through a -10 port to either VTA or Intake. Crankcase vent side will just have the standard STM -6 port added and ran like factory to intake pipe.
All the parts are on order, just gotta play the waiting game.

I don't really want to VTA though I might temporarily till I get another port on the intake pipe. This way will let me keep PCV function, and vent through a -10 port to either VTA or Intake. Crankcase vent side will just have the standard STM -6 port added and ran like factory to intake pipe.
All the parts are on order, just gotta play the waiting game.

EvoM Guru
iTrader: (50)
Joined: Mar 2006
Posts: 9,675
Likes: 132
From: Tri-Cities, WA // Portland, OR
Based on my pressure measurements, this should get the pressure in the valve cover down to around 0.25 psi which should relieve any issues for most people. The only drawback I've heard to using the PCV vent on the VC is that I was told by English Racing that under hard acceleration, that vent can get flooded with oil. I have yet to see it on my Evo, but I'm using a Kiggly HLA.
how are you measuring pressure in the engine?
finally installed -10an on PCV side (removed stock PCV) and VTA.
drilled/tapped -10an port on driverside, added a port to intake tube, connected.
no more dipstick blow outs, car seems to be noticeable smoother rpm without boost. and my vacuum now sits at -10 to -12 hg/in versus the -8 to -10 hg/in before capping the stock PCV.
anyone have trouble with the STM -10AN Push fitting coming out though? should i put loctite or RTV on it?
is it possible this could be effecting my tune though? seems to be rich and stutter in certain RPM now mostly mid-range goes straight 10.00afr
finally installed -10an on PCV side (removed stock PCV) and VTA.
drilled/tapped -10an port on driverside, added a port to intake tube, connected.
no more dipstick blow outs, car seems to be noticeable smoother rpm without boost. and my vacuum now sits at -10 to -12 hg/in versus the -8 to -10 hg/in before capping the stock PCV.
anyone have trouble with the STM -10AN Push fitting coming out though? should i put loctite or RTV on it?
is it possible this could be effecting my tune though? seems to be rich and stutter in certain RPM now mostly mid-range goes straight 10.00afr









