Update on progress to date, I think (not 100%) the thread size i'm after is M14x1.50.
Rick, what (if known) temp does your fan cut in at? there are several different switches available of this thread size and they have different temp ratings.
I'm led to believe that some 2.0 Alfettas had lecky cooling fans, can anyone confirm this? or, does anyone know if they did, then what temp should the fan come in on these cars?
Forza, I got some piccies, i'll get round to uploading them when i got a bit more time and the jobs done
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Alfa Romeo 2000, "Typical Alfa, un poco piu vivace"
(Quote from "Autocar" 15 march 1973)