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tmartin000 09-08-2015 04:03 PM

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 ?

yorgor 09-08-2015 05:08 PM

Probably OK.

trucker101 09-08-2015 11:24 PM

Is it a new or old hose? Top or bottom hose? Is it hard when the motor is hot or cold?

laj 09-08-2015 11:33 PM

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

tmartin000 09-09-2015 01:15 AM

will do

84prerunner 09-09-2015 08:49 AM

hoses should be hard once the motor and cooling system has warmed up.

twinboat 09-09-2015 08:57 AM

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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