Suppose I didn't really need to make a thread but it may help anyone else who chooses this path.Tthe other week I saved up my pennies and bought a Rowland manifold for the A14. Good on him for keeping the A series going. Now I already knew it would be incomplete which is fine but apart from port matching, where do I start to get it to good working order? the sand casting feels kinda gritty so I'm not sure if sand blasting it would make it worse or not.
Dd the carbs are one of my sets of bs34's so the fumiya Lin manifold wouldn't work on it. Those fumiya manifolds are to suit semi down draft carbs like the flat slide stuff in the 90's
Since you have flanges what I'm about to say may be useless, if you still have the vanette manifold I sold you years ago you could chop it up as the basis of the bike Carb manifold