Hello everyone. I haven't been posting very often because I've found nearly everything I've needed by using the search function. I've been taking lots of pictures and I need to find time for a big post documenting my progress on 4163R.
On to today's issue!
I've awakened the Twin Cam after a long slumber and am now working through smaller things, like timing adjustment. I bought a used Pertronix Ignitor II distributor on Ebay and didn't have any issues dialing in initial timing. I also bought a new matching coil to round out the system. When it came time to check advance, timing stayed the same as I revved the engine.
Upon pulling the distributor apart, I found that is was modified to pin the timing weights as shown in picture 1. I had already pressed out the roll pins when the picture was taken, so they're sitting above flush in the holes for reference.
I also found a set screw that locks the upper and lower module plates together as shown in pictures 2 and 3. It passes through the lower plate and threads, poorly, into the upper plate. I'm not sure if that screw is standard, but it seemed like another modification.
I've ordered advance springs to replace the ones removed during this modification, but I was wondering if anyone had a picture of how the mechanical advance mechanism fits together. I have a pretty good idea, but I want to make sure I'm not missing any additional components. I put in a help ticket with Pertronix, but I don't know how willing they are to share exploded diagrams as I have yet to find one anywhere on the internet.