Time goes by like a two stroke motorcycle and this blog is now ten years old. The first post on this blog was made on the 6th of July 2010. Have fun and keep the two strokes alive.
The below ypvs exhaust curve was stock on John's(USA) '86 Rz350 bike. I'm not sure I've seen this curve in the past. The exhaust valves starts opening at 7.000rpm and are fully opened at 9.500rpm. A few photos of John's RZ bike.