I took my test later in my years when I got out of the Navy. But I figured go big or go home, so I took the Legendary 1985 ZL900 to the Registry. I had to do a figure eight, then a circle in each direction, come out of the circle and head to the examiner, then come to a full stop. Coming out of my last circle I was leaning so hard that I was scraping my pegs on the ground, before I went WOT, stood it straight, and headed right for the instructor. Right before they started to wave their hands, I did a complete stop right in front of them. They just said "umm, wow, I guess you are good".
Several months later I threw a connecting rod, and I studied the engine case designs Kawasaki was still using on the Concourse and ZRX. Turns out a ZRX1200 would fit into the frame, but I had a few snags. The ZL900 had a 6 speed, was shaft driven, and also had coil ignition. So I split the ZRX case and replaced it with the 6-speed. I then assembled the halves and drilled and tapped a missing hole where the front bevel would mount. Now the ZRX1200 engine was shaft driven and had a 6-speed. Then I wired the coil ignition into the bike.
If you know anything about the ZL900, they were fast in their day; but with the ZRX1200 in the frame, it screamed!
And yeah, it barely fit, with only about 1/4 inch clearance under the tank.
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