at idle my z31 water temp gauge goes up to nearly 3/4 before the radiator fan comes on,i would of thought it should be coming on earlier than that like half way or very slightly over?,the engine doesnt boil but gets very hot,ive changed the coolant,thermostat,rad hoses and rad as part of the restoration im doing on the car,also the binnicle clocks including temp gauge were changed,but its always gone to nearly 3/4 before the fan comes on even before replacing those parts,im just wondering at what point other peoples z31 fan comes on? thanks