When you guys see the updated water pump pulley you will never worry about it failing again.

The most important thing about the 185-181 crank pulley is check those hex bolts and use red loc-tite! If you hear something that sounds like rod knock and then see your pulley wobbling rest assured the bolts have lossened and sheared off.

Waldig is the only person i know who sheared the keway off the crank. I dont understand how this could have happened. I have installed/uninstalled my 185 pulley about 15 times now, no issues yet with the keyway. As far as the keyway slot in the 185 its the same as the stock one...just a cut out grove.