In preparation for removing the engine from the frame, I remove the top end (valve covers, heads, cylinders, wrist pin, cylinders) to reduce the weight. Although not part of the engine top end, I also removed and inspected the cam followers as it is convenient to do that now.
This is not the first time I’ve done this. The 1983 R100RS motor is built the same as the 1983 R80ST motor, so the procedure I documented for the 1983 R100RS applies here as well. Rather than duplicate that procedure, here is the link to the documentation on the 1983 R100RS which contains all the details you need to complete this work.
This document will provide a brief summary of the procedure with pictures of what I found as I did this work on the R80ST engine along with a summary video of this work for the R80ST.
VIDEO: 1983 R80ST Remove Engine Top End and Cam Followers
And here is the longer video I made for the 1983 R100RS which contains additional information you may find helpful. However, I didn’t show removing the cam followers in this one.
VIDEO: 1983 R100RS Remove Engine Top End
Here is what the bike looks like now.