How about fastest single-engine sit-on bikes with no blower or turbo? I think it's Dan Kinsey at 226.148, and Dave Matson at 225.643, both 2000 cc class, but I believe Dave's motor wasn't even close to that size, there was no 1650 class back then. I asked Dan at the first BUB meet what the actual size was of his motor, and he said just under 2000. Now that Dave has built a bigger motor, I sure would like to see him get a couple good passes in, and see what kind of number he racks up.