it's been awhile. a little more port work, a new and (much) improved expansion chamber, and a speedo. with the original pipe and carb we were clocking 32mph with a 36t sprocket and a calibrated bicycle speedo. adding the new and improved pipe gets you 36mph with the 36t sprocket, and the race port with a 31t sprocket gets you 41mph (46mph on a 2deg grade).
