Ok, so i'm finishing up my head gasket/ timing belt replacement on my 90 accord. Somehow I have misplaced or lost the bolt that goes in the back of the block. The bolt is a large diameter bolt that is also known as the service bolt hole "bolt", which you are supposed to stick an M6 bolt into in order to lock the rear balance gear for the balance belt.

If anyone know of an exploded view of the engine or the bolt size please let me know. I have been searching a while now.

 

Wow, scratch that. Forgot I had a copy of the service manual on disc.
Found it.

 

Unsure of the bolt size, but here is an exploded view.
If I am not mistaken, it is #19

http://www.hondapartsnow.com/diagram...pan-460122.png

 

Here it is, mine shows a better view, its an 8x1.25 bolt. Thank you for your help though!

 

Just get a drill bit set. One will fit perfectly.

 

The question wasn't what I can use as an M6 substitute, but what actual bolt belongs in the hole once the process is complete. Matter of fact I did end up using a drill bit since I did not have an M6 that long laying around.