Righto, so I've got a 1256 that I'm rebuilding/doing a bit of head work/cam/not a whole lot.
I am interested in putting bike carbs on this thing, however, they have siamesed inlet ports, i.e. 1 port for 2 cylinders, like an upside down Y: ⅄⅄
These engines often use twin SUs, which if I'm right are similar to some bike carbs. So, I should be able to use two bike carbs similar to the size of the SUs (1.5"). I have seen one Mini (1275) with dual bike carbs and it appeared to work well.
Question is how do I size these? I think the Mini guy used carbs from some Yamaha 850 V-Twin, and made up a linkage. IS i9t best to use V-Twin carbs, or get a bank of 4 and try cut them down?
Thanks guys.