lower radiator hose spring. - Team Camaro Tech
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post #1 of 22 (permalink) Old Mar 5th, 05, 12:47 PM Thread Starter
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I bought new radiator hoses for my baby.
the lower hose doesnt have a spring in it?
where can I find a place to purchase the spring?
(spring keeps the hose from collapsing on itself)

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post #2 of 22 (permalink) Old Mar 5th, 05, 04:22 PM
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try a napa store, thats where i found mine... sonny

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post #3 of 22 (permalink) Old Mar 5th, 05, 06:05 PM
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Are the springs a factory thing or after-market thing?

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post #4 of 22 (permalink) Old Mar 6th, 05, 02:40 AM Thread Starter
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I bought the hose at NAPA?
they didnt know anything about a spring lol
its supposed to be a factory thing.
keeps the lower hose from collapsing on itself from the pump suction

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post #5 of 22 (permalink) Old Mar 6th, 05, 06:33 AM
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I bought a GM hose from a GM dealer. No spring. I still don't know if it is an add-on.

"Government is not reason; it is not eloquent; it is force. Like fire, it is a dangerous servant and a fearful master." ..... George Washington

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post #6 of 22 (permalink) Old Mar 6th, 05, 08:58 AM
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I experienced the same thing. I was told the new hoses don't need them. However, I took the spring out of my old one and put it in the new hose [img]smile.gif[/img]

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post #7 of 22 (permalink) Old Mar 6th, 05, 04:49 PM
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Newly-manufactured hoses don't need the spring due to better materials and processes; the old hoses softened with heat and aging and needed the spring to maintain their shape under suction at high rpm. [img]graemlins/thumbsup.gif[/img]

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post #8 of 22 (permalink) Old Mar 7th, 05, 12:38 AM Thread Starter
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well I installed a high volume aluminum pump so I still might need it.
Ah home depot got stainless springs in the plumbing dept!

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post #9 of 22 (permalink) Old Mar 7th, 05, 01:06 AM
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I agree with JohnZ. The newer hoses are reinforced with belts and are pretty rigid. Springs are a thing of the past.

On the dyno we test the best high volume/flow pumps such as Stewart's Stage II and III (probably the best highflow competition pump) pumps with off the shelf hoses with no problems. The hoses won't come close to collapsing.
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post #10 of 22 (permalink) Old Mar 7th, 05, 03:30 AM
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Some of the newer hoses have the spring inside the material of the hose, its not visible, but if you cut the hose, you will find it.
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post #11 of 22 (permalink) Old Mar 7th, 05, 05:26 PM
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My advice is to save the spring from the old hose and reuse it if the new hose doesn't have it. Cheep insurance from possible hose collapse.

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post #12 of 22 (permalink) Old Mar 8th, 05, 07:57 AM
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Ok, riddle me this.. Since the system is under pressure, depending on what rating your cap is, how is it possible that the hose would collapse?

Perhaps the spring was only needed when the system was cold and not pressurized? Once a system is up to operating temperatures, you can barely collapse a hose by squeezing it in your hands so I just don't see a hose collapsing from suction when there is that much pressure present in the closed loop system...

Does this make sense or am I missing something obvious? I know that springs have been used for this purpose since I was a baby so there must be some logic to it. I guess I am just missing it.

Bought a reproduction hose recently-no spring. I did not install one either. Is this going to be a problem?
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post #13 of 22 (permalink) Old Mar 8th, 05, 08:06 AM Thread Starter
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lower hose is on the suction side of the pump.
thats why itll collapse.
I found a stainless spring at home depot of all places.

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post #14 of 22 (permalink) Old Mar 8th, 05, 08:15 AM
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As for newly manufactured G.M. hoses not having the internal spring, my 97 Silverado came from factory with the internal spring on lower radiator hose and when I replaced it later on with a G.M. hose it was the same design with the spring. Now if only I can locate the truck seems some #*^@>"er stole it.

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post #15 of 22 (permalink) Old Mar 8th, 05, 11:27 AM
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Ok, here is my deal.....
Everything on/in my cooling system is new or has been replaced. Just a week ago I changed out the waterneck and put in a new BeCool 180* thermostat. I also bought a "no name" aftermarket 16# cap with the billet aluminum cover. The bottom hose has the spring through the entire length of the hose. The top hose only has the spring half as long as the hose and is next to the radiator.

Now, get this, after starting, running, going to normal temperature (185*) my hoses are nice and firm. Ok, now after the motor cools completely the top radiator hose will collapse just behind the spring. When I open the cap the suction releases and the hose goes back to normal shape.

What the heck is causing this????
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