413 Temperature sending unit

'61Imp Posted 2014-12-30 4:42 AM (#466185) Subject: 413 Temperature sending unit Regular Posts: 89 Location: Sacramento I am rebuilding my 61 Imp 413 and wondering if I can relocate the temperature sending unit. Of course my car has AC and as we all know the temp sending unit is impossible to reach under the compressor. Is there a good place to drill a hole in the water pump housing that is just as effective and accurate? Thanks for the help. ttotired Posted 2014-12-30 7:43 AM (#466192 - in reply to #466185) Subject: Re: 413 Temperature sending unit Expert 5K+ Posts: 8445 Location: Perth Australia You really want the sender as close to the thermostat as possible, this is where the hottest coolant will be (on average) Other than that, no help sorry 57chizler Posted 2014-12-30 2:23 PM (#466219 - in reply to #466185) Subject: RE: 413 Temperature sending unit Expert Posts: 3780 Location: NorCal On most BB water pump housings there is an unused hole next to the upper heater hose nipple, this will work for a heat sender; the problem is removing the pipe plug....it usually won't come out without a generous application of heat (like cherry red).