In Reply to: 8N Performance degrades when warmed up posted by Rick on April 21, 2017 at 09:15:26:
You say it is a 1952 8N, so it should have a side-mount distributor with a regular cap like a car and a remote mount coil. Is this correct?
If it has a side mount distributor, does it have a timing hole with a cover plate on the right side of the bell housing just behind the exhaust pipe? If yes, then there should be timing marks on the flywheel that you can see through the timing hole.
Timing a side mount is very different from a front mount, and requires a timing light.