As stated, Im trying to run a USDM pump and Timing chain drive gear on my GSR crankshaft but the timing chain drive requires a key something the JDM has integrated into the drive? Do I just use another crank pulley key here?

 

yes i belive you can just add the woodroff key . 90704-634-000 KEY (4.5X11.0)

 

bump!

 

get a woodruff key from Honda.

 

and its not a chain....its a belt.

 

^wowzers batman

 

thanks to all who helped. acura parts online notes a required quantity of two (one for drive, and one for pulley) for assembly so your help has only verified what I have found.