Valve cover lifting under boost?

[dont_blink]

I have had this HORRIBLE oil leak for a few months now ever since I replaced the intake valves, head gasket, head studs, front end seals, front end gaskets, balance shafts to no balance shafts, and valve cover gasket. It will only leak under boost, so if I'm cruising at say 5000rpm and not actually making boost there is no leak. If I get on it above 3000 rpm and start to build pressure and then let off a big plume of smoke comes out from behind the car and under the hood. I have checked the tensioner bolt for the balance shaft belt, the plug for the balance shaft hole, the oil pump sprocket, crank seal, oil pump housing, oil filter seal, EVERYTHING. After pressure washing it AGAIN tonight and going for a 3 second hammer down run down the street and into the garage the only place I see oil is on the inside of the exhaust cam and dripped down the engine mount on the inside closest to the engine. We had pondered the thought of a bad PCV valve from the amount of oil in my gatorade bottle, ehem, catch can. Could that be causing excessive pressure in the valve cover and even though I have a brand new valve cover gasket on there, it just happens to be leaking right in that corner no matter how tight I make it. There is no oil in any of the spark plug wells or anywhere else around the valve cover. Also, when I rebuilt the head I never replaced the cam seals, but they don't appear to be the culprit here. Thanks for any feedback guys and gals, I'm totally at a loss here.

 

[oldman]

1. Make sure that your dipstick tube is not pinched or crimped in anyway that will prevent the dipstick from popping when it needs to.

2. Recirculate your breather back into the intake pipe and use a inline catch can to prevent oil from entering your intake tract.

3. Perform a boost leak test from the TB elbow with the oil cap open and listen for leaks, causes of crankcase pressure leaks are PCV valve, intake valve seals and piston rings (excessive blow by).

4. Perform a PROPER compression test, both dry and wet.

5. Check your turbo for excessive shaft play and/or signs of oil in the LICP.