In Reply to: Re: 8N front mount distributor timing posted by Bruce(OR) on September 27, 2021 at 17:51:37:
The plate holding the points does not advance or even move except to determine the point separation when the tang is set as indicated. The plate is manually moved to the point where the points just begin to open.
What the weights do is move the distributor points cam in relation to the rotor by acting on two slotted parts of the driven rotor that moves the points cam around the driven rotor. Disassembly of the distributor will reveal what I am indicating. The plate holding the points is static, held in place by a large circlip.
When rebuilding the distributor removal of the weights and separation of the two rotor parts is needed to clean and grease them as well as removal of the rear screw plug in the center of the rotor and the clean-out of that passage and the oil weep hole that serves the front bushing. Put in a new felt wick and re-install the plug after filling the rotor with oil and stake the plug so it doesn't come out from the rotor rotation.
The flyweights should have a pair of matched springs on each weight to function properly-grease the poles they turn on so they move freely before putting it all back together.