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Old 09-08-2015, 03:03 PM   #1
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103 degrees rad hose tight

if I'm going to a 4000 pound camper up some steep hills at 103 air temps is it OK that my radiator hose is superhard ?

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Old 09-08-2015, 04:08 PM   #2
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Probably OK.

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Old 09-08-2015, 10:24 PM   #3
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Is it a new or old hose? Top or bottom hose? Is it hard when the motor is hot or cold?
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Old 09-08-2015, 10:33 PM   #4
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no, it's not ok. rad hoses are made to stay flexible within the parameters of their design. hot or cold. i would change both, possibly also the heater hoses. jmho
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Old 09-09-2015, 12:15 AM   #5
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will do
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Old 09-09-2015, 07:49 AM   #6
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hoses should be hard once the motor and cooling system has warmed up.
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Old 09-09-2015, 07:57 AM   #7
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The hose is withstanding 15 to 20 lbs per square inch or internal pressure, the pressure of the cooling system cap.

Squeeze a garden hose with the water off and the end open and then, with the water on and the nozzle closed.

A lot more pressure in a water system, but same theory.

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