Apologies if asked before, but have looked in forum and cannot find an existing thread on this. Does anyone know the outer diameter of the carbs for a 1977 SOHC CB750, as well as the distance between centers of the bores for each carb? I am trying to make up a plenum for a custom build, but unfortunately the carbs are in the workshop 80 miles away and I can't get there to measure up for another 2 weeks. Want to be able to take a cardboard mock up with me then.
Thanks in advance.