Also, I finally removed the swingarm. Regardless of whatever path I go down for an engine, the swingarm needs to come off.
Easy peasy, remove the clips to disconnect the oil lines, remove the rear wheel and belt, then loosen the pinch bolt, and now this. The pinch bolt is accessed from the top (left pointing arrow)
Hmm, I don't have a 7/8" allen key or socket... what to do?
This is the 9/16" grade 8 bolt and nuts I referred to earlier. The threads were cleaned and coated with red locktite, and jammed against each other until they were inline with each other. Looking back, I would have bought a longer 1-1/4" or 1-1/2" bolt, but this did work out well. A long box end 13/16" wrench and the first couple counter clockwise turns were easy.
Then it jammed up, due to corrosion. I sprayed some PB blaster into the gaps, tightened the bolt back up, then sprayed some more in the other end. You will see the swingarm slide from left to right as you do this. I let it sit for about 30 minutes to soak in, then tried again. Eventually it gave up, and came out. Luckily, it spared the bearings and they still rotate easily and smoothly.
My rear pivot bolt had some serious corrosion built up on it and didnt want to come out without a fight.