"About $250 seems to be the going rate for used Alfano's which will tell you at a minimum temp, RPM and lap times. It will store these in memory and you can transfer the data to a computer for analysis if you really want. Some Alfano's will…"
"Head temperature will give you an indication of the carburetta tune. In a J you probably should be under 200 deg C.Would need to find some old data to check what we actually ran.
Almost any second had laptimer is likely to have a temp sensor…"