Topic: Radiator


carcrazy    -- 10-10-2016 @ 3:27 PM
  The engine overheats when outside temperatures are over 90 degrees. I have recently back-flushed the cooling system, installed: new Carpenter water pumps, all new hoses, and fan/water pump belts.
What should the temperature drop of the water in the radiator be between the top tank and the bottom tank? Where can a good, reasonably priced infrared thermometer be obtained?


slopey1939    -- 10-10-2016 @ 4:59 PM
  CC,
Fought the same problem with my 39 for years. 85 to 90 and any uphill at all and she ran close to 200 to 210. Stop at traffic signal and anxiety plus. So went with Skip Haney's high volume water pumps (original housing) and the additives he recommended for the radiator and with 60 to 70 degree day she runs 160 on the freeway and up to 180 when idling when it is in the 85 degree area. Sorry, I am not helpful with your questions as it may be too late since you just bought new pumps.
Regards


TomO    -- 10-11-2016 @ 7:42 AM
  The drop should be at least 15 degrees. You would measure it on the side away from the engine, where the water enters the radiator and leaves it.

The Gold Standard for infra-red temperature sensors is Fluke, but the one from Harbor Freight is accurate enough for your purposes.

Tom


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