Grinding of crank

[Dr DIY]

Originally Posted by KTL

I've always been curious what determines the orientation of the distributor drive gear. Because the gear is symmetric and the tooth cut remains the same regardless of orientation

The image below is from the '84-'88 spec book. Flip the image over and the angle of the gear teeth stays the same. I've looked at the gear in hand and see no glaring difference between either orientation of the gear

As a machinist I can tell you that the tooth cut may NOT be the same even though the thread is still right hand. Follow the book and it doesn't become an issue.

[KTL]

Thanks for the clarification. I figured it had something to do with the cut/profile of the teeth and not the direction of them. Wasn't trying to defy the book or make things more difficult. Just looking for a definitive reason regarding the orientation of the gear.