My 312 now has 1300 miles on it after rebuild so I took an hour and adjusted the valves. They were originally set at .018 and were now .019-.020, I was very happy with this. It got me to thinking though, what is the adjustment interval? I couldn't find anything in the service manual or with a search on the board. I was thinking every 4000-5000 miles? What seems to work for you?

Mike

1956 Fairlane Victoria (ORREO)

 

Overlooking Beautiful Rimrock AZ