Quote Originally Posted by geezer101 View Post
I've run into situations where the distributor has been out by '180 degrees' and it's pretty common (it's not exactly 180 degrees due to the odd number of gear teeth)
Well, it is exactly 180 degrees, but with the odd number of gear teeth it results in your ign. timing being a half-tooth too advanced or retarded no matter how you insert the dizzy, with not enough range in the advance adjustment to bring it right. This can happen if you rebuild the dizzy with either the drive gear or the mechanical advance mechanism wrong way around.