No not going around in circles because it's springtime in Oregon but looking for the governor spring that goes in a 5/70 240Z distributor. When I took mine apart to refurb there was only one spring inside.

Here's the part I'm looking for in case some kind Z-ster has one sitting around looking for a good home. It's part number 6 on the lower left of the diagram.

Edited April 24, 20231 yr by SpeedRoo

There are threads out there about the one spring(ed) distributors.  I think that the end decision was that some come that way.

 

Here's another.

 

 A looong time ago we used to pull the spring from one of the centrifugal advance weights to get full advance at lower RPMs..

Well that makes me feel better, was searching everywhere thinking I had misplaced it! You guys rock.

In return for your help here's something that may interest you. I'm trying to restore my May 1970 240Z with NOS parts. Needed a clutch cover and disk, preferably original Nissan parts. Well found the clutch cover and also 4 clutch disks. Bought two of the disks, part number on the box is 30100-Y6800. In the 240Z manual that cross references over to the 30100-E4300 original part. https://www.carpartsmanual.com/datsun/Z-1969-1978/power-train/clutch/1

Got them delivered today and it has Atsugi F225DC stamped on it like my original. They have 2 left in stock, at $41 each they were a bargain. https://www.ebay.com/itm/145031142351