Originally Posted by treadigraph
Also Dwight Thorn in California and a chap called Tor (?) Sandvik at JRS in Minnesota (?), who was the late John Sandberg's engineer, both do Merlin rebuilds in the US, largely for the Reno racing market I think.
You're thinking of the late Sam Torvik, who passed away a few years back. Since then, the JRS Enterprises engine shop has closed.
Reno Merlins these days are prepared by Mike Barrow and Rick Schanholtzer, Dwight Thorn having retired a few years back. I believe that Jack Hovey still overhauls Merlins, but not for racing.