I am running a 306 with forged internals, edelbrock heads and an On3 turbo kit. Though they get bashed quite a bit, I have had no issues with mine. This motor went together a little loose. My piston to wall clearance is anywhere from .050 to .018. I have been told, and from what Im learning in a turbo set up I do not want to run a pcv system? What I don't know is if the smoke Im seeing coming out the breather at this catch can is blowby, or smoke in the engine that has nowhere to go due to a not so adequate pcs/vent situation? What I have is a 5/8 hose and fitting coming off the back of the intake where the pcv would be going into a catch can with a filter on top. I have it mounted behind the strut tower on the passenger side. There are times when the smoke is just pouring out from under the hood on that side. I also notice when it idles for too long it will start to smoke out the exhaust, especially if I hammer down on it, but it will usual clear itself out. I believe that's a problem in the center section of the turbo leaking oil though. I have the passenger valve cover sealed off due to no room to put a breather, or even a cap on it cause the throttle cable bracket is in the way. On the drivers valve cover I am just running a filter type breather. I have been going through the forums and there is a lot of information that contradicts itself. Is it possible this is not blow by I am seeing and pressure build up in the engine? I had a nice set of trickflow valve covers with a bunge welded in for a nice fitting but they would clear the intake. When I put the spacer in it wouldn't clear the hood..I have a cool set of Ford Motorsport Valve Covers but for some reason the angle at the upper corners is cust weird and the rockers hit the cover. Any help on whet to do would be appreciated...a pic to steer me in the right direction would be helpful to.