I have a late A65 primary chain case, which has the small round cover for checking ignition timing and it also has what look like oil level and drain screws fitted directly in the casing, as opposed to the early ones (like on my bike) which use the casing fixing screws for these functions. I’ve attached some photos.
The casing has the number 71-1045 cast on the inside.
I would like to fit this casing on to my 1966 engine and was wondering if anyone could advise me if this would be ok, or is there any reason why it would not do the job?
I’ve not looked into it in great detail yet but I have seen that it has a hollow dowel on one of the fixing holes. I will either have to counterbore and ream the matching hole in the engine crankcase, or remove the dowel altogether. The original primary case on my bike has no dowels.
Any advice, or warnings would be greatly appreciated.