I can't remember what goes in the holes each side of the knock sensor.
 

I have two threaded holes each side of the reinforcement for the knock sensor and ICV. I can't remember what goes there. Am I missing something?

On the block in the picture the two circular protrusions have note been drilled and threaded.
http://karl.wilen.us/images/Rebuild/Engine16a.JPG

i think the one on the left is nothing......

I think you're right. There is some dirt in the hole so it must have been left open. what about the right one?

that should be for: http://forums.pelicanparts.com/porsche-944-turbo-turbo-s/528766-aos-question-while-your-there.html

the knock sensor

but my bad, the small little plate for the IAC valve goes in the first hole, or atleast that's what my pics show...

Just to make sure we talk about the same thing.
These are the places where my block has drilled and tapped holes. I have a 90 turbo by the way.
http://forums.pelicanparts.com/uploa...1276587004.jpg

hmmmmm....not sure then. my 86 has nothing that goes in them. I don't think they re even drilled or tapped...

probably nothing then....