Breather hole on timing chain cover
 

Hello all and happy holidays!

I was the subject of an unpleasant experience last night. I had just finished installing my rebuilt and suped AOD and had been babying the car for a few weeks to break it in and last night I let her have it on the way home. A few minutes of hard driving later, I smelled an intense burning smell and I went crazy scanning the car. When I pulled to a stop, smoke was billowing from the engine bay. A quick inspection revealed oil all down the passenger side of the enginebay including the smoking headers that were also covered in dino juice and the underside of the hood! Further inspection revealed almost completely dry areas around the head gaskets and valve cover gasket. I then traced the splash back to the troublesome little hole on the side of the timing chain cover. I had noticed this port on installation of my mechanical fuel pump port equipped timing chain cover.

What is this good for? I usually stick a bolt in it but apparently there's enough oilpan pressure (?!?) to eject it and squirt oil out the side of the engine!

Yes, that needs to be plugged by a freeze plug! Then once you have it in then take a small screwdriver and smack the edge of it in. This will aid in keeping it in. Locktite would help out too.

Heres a pic just to make sure we are on the same page.

Oops =P

I guess this explains why I "burn" so much oil. Well at least the right side of my engine is now rustproofed and my girlfriend loves the smell and festive smoke!

Funny thing is it never really gushed oil until last night. I guess I have enough blowby to create pressure in the pan that manifests when I punch it

I'll go seal it up at once and thanks!

I believe the reason way it didn't leak until last night is because of the rpms you were turning. Oil splash in the oil pan, and front cover is what pushed the oil out. I had a similar experance.:o
good luck

That timing cover is from a different model and that hole is for the dipstick. Just plug it with whatever you can find.

Andy

ding ding ding ding ding. Correct

-Josh, aka the tireburner