Exhaust stud help!

[1966 dart wagon]

I've been driving my car lately and noticed if i downshift and let it rev down when slowing down, instead of pushing the clutch in i smell oil. Popped the hood and noticed some smoke coming from the backside of the motor, i looked down there and noticed the #4 exhaust ports stop stud is gone, it is a stud right? does anyone know the size and pitch of the thread so i can put something in it to bolt it back up tight. Could this be causing my smoke, I highly doubt it but never know, figured its worth asking.

Thanks,
Jack

[GLHNSLHT2]

8x1.25mm

[jamesmonty]

Is it gone or did it break off?

[xdig]

I've been driving my car lately and noticed if i downshift and let it rev down when slowing down, instead of pushing the clutch in i smell oil. Popped the hood and noticed some smoke coming from the backside of the motor, i looked down there and noticed the #4 exhaust ports stop stud is gone, it is a stud right? does anyone know the size and pitch of the thread so i can put something in it to bolt it back up tight. Could this be causing my smoke, I highly doubt it but never know, figured its worth asking.

Thanks,
Jack

I'm having a similar problem with my SC. I get a random cloud of smoke from behind the intake manifold. I haven't had a chance to look at it but I was thinking that it might be VC gasket leaking and dripping onto the exhaust. I will be pulling the head sometime in the next couple of weeks and will let you know if I find anything. I have been trying to get the SL back together and running before I start on the SC.

[1966 dart wagon]

Is it gone or did it break off?

its gone since I did install it when i put the head on, I believe i forgot locktight though.

[1966 dart wagon]

well I found a spare stud on my old head, but the exhaust manifold was shifted to the side of the hole in the head, i tried to pry it over with no luck, as I thought. So looks like i wait till i pull the motor to install the new turbo then put this stud in.