Hey my name is Tim and I own a 95' Civic that I have done a lot of work to (suspension, interior, and paint and body) for a short list. I live in a little town in Arkansas and am married to a wonderful woman and have 2 beautiful step kids and 1 on the way. Well that is enough of the introduction. The question I have is this. I had a 1.5 DX motor in my civic and am going back with the 1.6 EX Vtec motor. On the back of the motor there is the oil sending unit andto the left there is another threaded hole and me and my buddy that are building it do not know what goes there. The guys at the Honda place here areidots and are no help. Any help willbe appreciated.

Thanks in advance.

 

knock sensor?

 

Thanks a bunch.

Tim