Hey fellas my names zach and ive been building a gsr turbo civic hatchback ive ran into a issue ive been building this engine for the past 5 years and over time I lost my crank key way I got one from honda and tried to install it my lower timing gear has side to side play with the key way in it on the crank it is kinda rounded at the end of the slot. The key way honda sent me does not match the length of the slot and does not have a rounded edge. I look the part number up and pulls up for a 80s model accord then scroll down and the same part number goes to the acura b18c1 and it looks different then the one I have. The one I have is kinda short a squared on all edges the part number I have is 90704-634-000 thanks in advanced

 

Anyway you can locate the numbers on your block to match the key for the pulley... not the numbers where it says B18C1 .. there should be dotted numbers located some where on both the head & the block.. they arent always same set of numbers but will tell you so you can get further finite specific details if I'm not mistakened.