Frank,
Here is my thinking be it right or wrong. If the only thing evacuating the crankcase vapors in this case is the PCV valve, and with a 218-218 cam that does not have much more than 11 inches of vacume at idle, how else do they get out except for the breathers? I thought the EGR was soposed to perform this function if working??? The best way I can describe it is it looks like an old whistling tea kettle spewing steam up in the air. In my motor's case, it's a "steamy" looking vapor that smells like exhaust that comes out with speed when I rev up the motor. At idle it kinda just eases out in no big hurry. I can plug off the DS breather with my hand and watch it expel out of the PS breather instead. IMO 11 inches of vacume is barely enough suction to overcome the check valve and make the PCV valve do it's job as intended. If my memory serves me right, didn't these motors have a tube from the PS valve cover to the turbo inlet bell? I would venture to assume that this in addition to a functioning EGR, a higher vacume producing cam, a PCV valve with no checkvalve in place, and a capped off DS filler hole, this steam would be non-existant... I am going to run a leakdown and compression test just for ****s and giggles; but mostly to set my mind at ease. The motor runs great, no loss of coolant, no bubbles anywhere, no misfires, no anything??? Anyone else care to shed their opinions on this matter? I may dril out the EGR portion of the powerplate to see what happens. Tell Terry and Franky Jr. we said hello.
