coolant hose pressure

[jimmyB]

hey guys, well i dont have overheating problems but i just put in a tstat and new rad. Are these motors supposed to have alot of pressure in the cooling system? I noticed my upper rad hose gets real hard after about 5 minutes of idling. And i have the 13lb rad cap. Is this normal?

 

[franklin2]

The hose will have 13lbs or less on it if your radiator cap is working.

 

['94IDITurbo7.3]

why does it seem like alot of people have 13lb rad caps? i have a 16lb cap.

 

[icanfixall]

The pressure in the cooling system depends on a working radiator cap of a set pressure. Its generally thought you can't have more pressure in the system than the cap will allow. The cap acts like a safety valve. Now what radiator and thermostat did you install. Only the motorcraft thermostat will function properly. Others fit but wont cool the engine when its being used as designed.

 

[jimmyB]

i put the IH stat in and found the only factory brass rad left in florida. It gets hard,but i didnt know on these motors how hard they are supposed to get.It doesnt blow bubbles or nothing. It did have a 16lb and when i went to the parts store to get the cap they said 13lb was factory. It doesnt get hard as soon as i start it but 5minutes or so when it warms up it slowly gets harder. Just want to now everything is right.

 

['94IDITurbo7.3]

tomorrow morning i will feel mine to see how long it takes to get hard. i know that after my hour drive to school it is hard a a rock.

 

[93cc7.3]

i ditched my 13lb for a 16lb at the same time replaced the tsat never had such a cool running setup

 

[jimmyB]

Thanks for the info guys!