I rebuilt the top end of an ’85 Suzuki GS450L. I put together a series of YouTube videos I thought I would post here. It includes, honing the cylinders, rebuilding the head, adjusting the tappets, camshaft installation and timing, etc. Bike will put back to running condition..
Part IV is finishing up and starting the bike

https://youtu.be/oc2-AXi5ZTQ