oil from breather

[JOHN G]

I never had a problem losing oil from the breather with the factory valve cover(breather at front)As soon as I put the aftermarket chrome one on(breather at rear)It wants to pee oil all over the place. It has a baffle, but I'm doubting the design of it. I don't have a pcv hooked up, but am thinking of it. I also think maybe I may plug the rear opening and use a twist in breather in the fill plug instead. I highly doubt a ring problem at this point as it was directly related to the change(no oil fouling)-any thoughts?

 

[The Plankster Prankster]

sounds like the valve cover is causing it
but if you hooked up a PCV, that might fix it, i say its worth a try

you might try a breather in both holes and if only the rear one leaks oil, then plug it and use only the front one

 

[66 Fastback]

PCV valve was sized to limit the amount of crankcase fumes the carb could pull in. So the PCV valve should help to some extent. Were you running a PCV valve with the old valve cover?
Doug

 

[JOHN G]

I eliminated the pcv with the tri power, but had the hole plugged with the pcv and a crimped hose.