Thought maybe I should update this thread now that I've got a few rides in on the 650 (three rides to be exact).
Let me preface this by saying that this build took over a year. I didn't always have time to work on the bike which is why the project took so long. Once I finally got it fired up, I just wanted it gone. I wanted to sell it. I was tired of working on it. But alas, I decided I should at least ride the thing one time to make sure it was fine before offering it up for sale.
Ride #1: At first the bike felt terrible. It has a terrible stinkbug stance (feels like the rear fender is pointing at the sky), the del-orto is anything but crisp. I'm not used to linkage-less suspension, the bars were too far back (I'm 6'2"). The carb's return spring is stiffer than anything I've ever felt. Lots of compression braking too. The e-start is not installed (due in part to a broken gear) and kickstarting the 650 was difficult at times (sometimes quite easy). Generally the bike felt very crude and unrefined. Like farm equipment. But the more I rode it, the more I got used to all of its idiosyncrasies.
At the conclusion of that first ride, I discovered several oil leaks, and a head gasket leak. These issues would need to be resolved before the bike could be sold.
I tried to re-torque the head but that didn't solve the problem. So I ordered a new head gasket from Taffy. This time I went with the OEM one which had some sort of blue strip of silicone (?) on each side. I think this is important in terms of mitigating coolant leakage. That, and the higher cylinder head bolt torque (as discussed on this forum in other threads) were effective in sealing the head. As for the oil leaks, I replaced and re-sealed the clutch cover gasket, and I replaced the shifter seal and kick start o-ring. On this old 2001 'Berg, the kickstart sealing arrangement is poorly designed IMO. The o-ring solution at this location is not optimum. I believe the newer 'Bergs utilized a "proper" oil seal (lip seal). I would like to come up with a better solution for my bike. I'm not sure if a newer clutch cover will fit, or the old cover could be modified to accept a better seal (I'd love to hear some ideas to modify/improve this potential leakage point). Oh, and there was also a bit of leakage from the valve cover but that obviously needed to be resealed since I had the cylinder head removed.
I'll follow up with the subsequent rides in individual new posts. In the meantime, here are some pictures of the aftermath of ride #1...