Quote Originally Posted by Zorak
Question I would have about Shawn's mod: if you eliminate the vacuum source at the PCV valve (by plugging the hose), doesn't the valve then stay closed all the time? If you are leaving the valve in place on the valve cover and attaching a breather filter to the valve where the vacuum hose used to be, is crankcase pressure enough to open the valve to allow the oil vapors to vent through the breather?
It works just the opposite. When there is vacuum it is closed , so that it does not suck oil out. So what is actually happening is the PCV valve is not closing. They make elbows you could use or even put the breather directly into the valve cover.If you are worried about the motor not breathing but it is not needed, it will be fine with the pcv valve still in. I will try to post some pics but I have to borrow a camera to do so. shawn