We acquired a Sexton a few years ago and I pulled the R975 out of it and dismantled it. It was a total write-off, 5 of the 9 rods snapped. So the engine is quite an impressive static display in our museum now.
I would agree with Jesse. There's is nothing particularly high tech or mysterious about the design. But you would have to be SO careful with reassembly. I regret I didn't have the opportunity.
Malcolm
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