Smoking: catching oil from PCV line on a 408 Magnum

moper said

The right "fix" would be to properly place and baffle the pcv hole in the valve cover. But, I said "fix" because you may not have fully seated the rings yet. If the wall finish is right, moly rings seat almost immediately. If the wall finish is rougher, even by a little, they will take time to seat just like plain iron faced rings. I'd just give it some miles. While it is helping, finding odd stuff under the hood always send up red flags if I'm looking at a car.

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Good advice, thanks. The motor has about 4 tanks of fuel through it now. It runs really good and is showing no signs of smoking. I changed the Dyno oil and filter after the initial start up with more dyno oil and a fresh filter. I'm going to change it again soon and continue to run run conventional oil for the first 2 or 3k miles. Then I'll switch to synthetic.

I have not done a compression or blow-down test, but the smoking seams to have ended completely.

I PM'd Mike at MRL regarding a comment he made to another post, " You have to run some sort of breather on the VC and a PCV as well or the crank case pressure is going to go sky high." to get clarification as to whether or not this a result of bad ring seal or it's normal to have pressure build at high rpm.

When I double check my lifter preload, I'll add a better baffle and swap my cast valve covers to the opposite sides. This will address the positioning of the PCV valve to the front of the engine. I'll bypass the oil trap and check to see if that also eliminates the smoking. If so, off comes the oil trap.