[yblock57]

Originally Posted by Crankster

Here is an older webpage (last updated way back yonder in 2004) which discussed these particular distributors and alerted me to the specific wear problems. I found he knew exactly what he was talking about! He explains setting up the advance curve, too.

http://m571.com/yblock/distributortuning.htm

It gets complicated quickly rebuilding FYB distributors because of the different parts they used depending on the iteration. If a replacement distributor shaft is necessary, they are unobtanium except the particular type as discussed here, with the "comma" shaped centrifugal weights. N.b. these are not drilled for the drive gear, and it needs to be precisely located.

The ball bearing style plates are still available, or, you could use the later type, which were also problematic. Ford also (naturally) changed the housings somewhere in there, which governs what type Vacuum Canister (which they also changed) will fit, depending on the housing or breaker plate. The earlier style vacuum advance used a fiber spacer, a spring, and shims (washers) for the advance curve, and connected it all with steel hardline with a special type of compression fitting.

Thanks for all the helpful info. Bookmarked the link.