Does anyone know the thread size of the temp send unit in a TR3? I need to plug the hole or I'll have a mess when I start the engine again this weekend. Thanks C Carl 1961 Triumph TR3A - TS81802LO <http://mysite.verizon.net/cfmtr3a/> http://mysite.verizon.net/cfmtr3a/ Still being restored - but 2013 looks like the year.. Tampa, FL