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9 replies

cooling pipes

unclebuckunclebuckMember
I had my original radiator re-cored and removed the connecting pipes to clean and repaint. I have found in the search mode that the upper connection hooks up to the left pipe which goes to the water pump. The pipes look the same except one has a small nipple on the radiator end. Is that the upper or lower pipe to the radiator? Also, the nipple had a hose about 12" long which is capped. Looking thru Georges diagrams I see the small hoses but don't recall a connection in the pipe. My car is a 1972 and only had the upper and lower main hoses connected to the radiator. Any ideas why? The gauge has always read in the 220-230 range when driving , but I have never had a IR digital reading above 200 at the cylinder heads , block , or radiator. Thanks
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jag13catjag13catMember
Uncle Buck;
Ford introduced two service bulletins to address air purging or air in the coolant system.
TSB #3 (Sept. 1972) introduced a modified upper radiator tube with a hose connection that was to be connected to a replaced welsh plug in the upper right corner of the radiator to assist air purging in the cooling system.
TSB #8 (Aug. 1973) revised the air purging procedure by running a 15 ft. hose 3/16" ID from the upper radiator, under the vehicle, to the water supply tank and to braze a 3/16" tube to the upper part of the supply tank.
The water tube with the hose connection to the radiator was to be capped. To the best of my knowledge, most owners have capped the small 3/16" radiator tube connection.
jag13catjag13catMember
As a clarification, the Pantera's coolant tubes are routed differently than our conventional thinking.
The upper hose connection on the Pantera radiator (OEM radiator) goes to the water pump through the left side underbody tube.
The lower radiator hose connection is the hose coming from the thermostat housing, through the pressurized water tank, & from the water tank through the metal tube and through the right side underbody water tube.
This is opposite of one's thinking of hot water flowing downward from the top of the radiator and cooling before it enters the engine through the water pump.
jag13catjag13catMember
The Fluidyne OE replacement radiator connects the same as the OE radiator and is a cross flow radiator.
NOW TO CONFUSE THE ISSUE: In the "Find" search, should you type "RADIATOR", you will read that some owners cross over the cooling pipes and connect the radiator tubes opposite of OE and achieve cooling as good as OE, or with no noticeable difference.

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