Re: Over heating issue, I think.

Posted by Owen_Dyneto On 2014/7/21 8:52:47

My own feeling is that driving in 100 deg. F. temperatures is a reasonably stressful situation for a car more than a half-century old and to be able to do that and still maintain more than 20 degrees below boiling is not indicative of a serious overheating problem, though of course I can understand you'd like to have a bit more of a cushion. At 50 mph or so an electric pusher fan will not offer much if anything, it's effectiveness drops off rapidly with road speed, as does the conventional fan.

For a little incremental improvement you might look to the usual things, fan belt tension and proper fit in the water pump pulley, cleanliness of the radiator core air passages, possibly excessively thick paint on the radiator core, and possibly use a "water wetter" (I assume you run water and not antifreeze in that climate), water pump impellor clearance, and the like.