.programmable cam's what is the backlash for In. and Ex
Your "assumption" was that they were factory cams. From his engine description it was pretty obvious that the cams would NOT be the 1300 Veloce cams as used in the early 750 engines. That`s why I ask specifically what cams he had, as "programable" doesn`t describe the cams as stock 1958 camshafts.Sorry, those are the factory numbers for factory cams. Not made up.....
Some may prefer different settings for modified cams, but this is what Alfa specs.
toe to heal of lobe is around 35mm C/L of cam to toe around 21mm I believe the circle you are talking about is26.5 dia. I've built a lot of racing 2 stroke outboards first time for cams.I doubt the 8mm bolt with internal screw came from these engines.
As to cams you need to find a casting # on the cams if there are any. If not measure the base circle and then overall length of the lobes. That length less the base circle measurement will be lift of the lobe. Measure both intake cam and exh cam. The true 106 series veloce cams were different durations .
Post some pictures of the cams.
27.5mm (+-)is STOCK cam BCs. If you measure the centerline of these you will get about the same or a few thousandths more. If you are measuring yours and you get 21mm you don`t have stock cams. They are obviously reground cams so lash will be VERY different from stock.toe to heal of lobe is around 35mm C/L of cam to toe around 21mm I believe the circle you are talking about is26.5 dia.