Probably most owners have done this already, but it was a big deal for me-- perhaps it will help someone else. I purchased a 40k TTA 6 months ago knowing that it had an oil leak. I could see that oil was getting out around the PCV grommet and replaced that with no improvement. Suspicious that perhaps the oil was coming from the pan gasket or rear/front seals, I cleaned under the engine and went for a drive. After checking it again, still the only place where I could see oil was around the PCV grommet.
The motor already has a small breather, but I suspected that it wasn't sufficient. So I built this breather from a spare oil cap, a metal EMT 3/4" electrical connector, and a $12 Spectre breather p/n 4285. I bored the cap and the hard rubber base of the breather with a 1" hole saw. With a bit of force, the fine thread side of the EMT connector threaded itself into the cap. The other side of the EMT connector slid into the breather and is secured with a clamp. Perhaps not as elegant as a billet aluminum breather, but it is providing sufficient pressure release to stop the PCV grommet from leaking!
The motor already has a small breather, but I suspected that it wasn't sufficient. So I built this breather from a spare oil cap, a metal EMT 3/4" electrical connector, and a $12 Spectre breather p/n 4285. I bored the cap and the hard rubber base of the breather with a 1" hole saw. With a bit of force, the fine thread side of the EMT connector threaded itself into the cap. The other side of the EMT connector slid into the breather and is secured with a clamp. Perhaps not as elegant as a billet aluminum breather, but it is providing sufficient pressure release to stop the PCV grommet from leaking!
