Radiator Hose Springs - Yes or No ?

Heating / Cooling / AC

  1. mydart270

    mydart270 myDart270

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    I have a 1968 Dodge Dart 270 SL-6, no AC, auto, fully restored . Cute car but original radiator hoses (top and bottom) started to leak at wire hose clamps. Off to NAPA and ordered replacements. However no coiled NO springs inside new hoses. The old springs very rusty and still salvageable I feel. Here is my question:

    Do people still use springs inside radiator hoses? New rubber in hoses not needed NAPA man said (nice cope out!). Compared to my 1992 VOLVO hoses, NAPA hoses inferior (no thickness, very soft, no interior strength), thinking about reinstalling springs again after rust removal. What do you think??

    Great forum...great people...love my Dodge Dart!!
     
  2. halifaxhops

    halifaxhops It's going to get stupid around here! FABO Gold Member

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    Cant hurt at all!
     
  3. SGBARRACUDA

    SGBARRACUDA ROY FABO Gold Member

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    It has been my experience that the makers of hoses now days just don't use them anymore. I reuse the springs where possible.
     
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    • H22A4

      H22A4 Does anyone read this?

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      I got the same line from the guy behind the parts counter... advancements in rubber hoses has come a long way so no spring needed. I installed it without the spring but kept it on the shelf just in case. Noticed the temperature gauge would climb at highway speeds so installed the spring and it doesn’t get as hot on the highway now.
       
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      • 4spdragtop

        4spdragtop CONGRATS NORTH AMERICA! FABO Gold Member

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        A member on here Badsport told me a trick and said to use a coat hanger.
         
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        • Murray

          Murray FABO Gold Member FABO Gold Member

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          If you have a performance V8 with a high flow water pump, you can suck your radiator hoses flat and cut off water flow. In performance motors (even during street driving) you need to have the wire springs to prevent collapsing the hose.
           
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          • Daves69

            Daves69 Well-Known Member

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            Wind your own if the old is too far gone. Make sure you roll the ends so they don't/can't poke through!
             
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            • 6pk2goDemon

              6pk2goDemon Mopar Mod Staff Member FABO Gold Member

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              • inertia

                inertia Well-Known Member

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                Yes ! !
                A length of stainless welding rod wrapped around a jack handle/pipe works very well.

                Spring only needs to be in low pressure hose. (Suction side of pump).
                 
                Last edited: Jul 25, 2018
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                • Hellrats

                  Hellrats Just another dumbass FABO Gold Member

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                  Yes, put the spring in. That is a BS line about the rubber. It will still age and the hose will suck shut.
                   
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                  • 71DodgeDemon340

                    71DodgeDemon340 FABO Gold Member FABO Gold Member

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                    Just put a high flow water pump on my 340 and no issues with the hose collapsing flat, if the system is pressurized properly why would the hose collapse.
                     
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                    • 5.7 hemi

                      5.7 hemi FABO Gold Member FABO Gold Member

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                      Stainless tig rod and your good forever!
                       
                    • jobrated_man

                      jobrated_man 1965 Valiant and Dart

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                      • mopowers

                        mopowers Well-Known Member

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                      • grimreaper

                        grimreaper Cross Member

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                        Just dealt with this a couple of weeks ago. A friend replaced his radiator hoses on his six cylinder pickup early this spring because the top one got a tiny leak. He recently reported to me that the pickup would occasionally overheat since that change. I asked if he took the spring from the old lower hose and he told me the guy at NAPA told him he would not need a spring. We went to my shed and got a spring from a sprinkler head and stretched it to length. Dropped the lower hose, inserted the spring and hooked the hose back up to the radiator. His truck has not heated since the spring replacement.
                         
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                        • daves66valiant

                          daves66valiant 68 Dart 340/727:66 Signet Vert 340/5spd: 68 D100

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                          Will be ordering too. Cheap....or make my own
                           
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                          • 71DodgeDemon340

                            71DodgeDemon340 FABO Gold Member FABO Gold Member

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                            If the system pressurizes why would it collapse? Only time i could see where it would collapse is when it cools off if a vacuum is created and suck the hose flat. I always thought a bad radiator cap would cause this.
                             
                            Last edited: Aug 1, 2018
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                            • inertia

                              inertia Well-Known Member

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                              If you're cruising down the road on a brisk day, engine up to temp, rads doing its job dumping lotsa heat from the coolant, so much that the thermostat is only half open keeping the temp up.

                              You come up behind a vehicle going slower than you like, so you pull out and jump on the gas. The revs go waayyy up, that high volume pump,(any pump) creates so much suction, but where's the coolant to come from, thermostat is restricting flow, as is the rad.

                              The result is the pump cavitates, and/or the bottom hose, if soft enuff and without the spring, will collapse.
                              I was absolutely amazed the first time I saw it. An old Cadillac with an oil sogged lower hose sucked shut right before my eyes, as I reved the engine. Have seen a few since too.
                              Yes, it was pressurized.

                              This prob happens more often than known, cuz the collapse doesn't nec last long enuff to overheat.

                              hope it helps
                               
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                              • 72Dart6pack

                                72Dart6pack Harder Better Faster Stronger.

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                                Ditch the spring save weight. Gotta add 7 more mph at the top end. You do relize I'm pulling your chain.
                                 
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                                • Darter6

                                  Darter6 Well-Known Member

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                                  Like said above I've made my own out of coat hangers. Did it to my Valiant ! Cheap insurance.
                                   
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                                  • SGBARRACUDA

                                    SGBARRACUDA ROY FABO Gold Member

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                                    Yeah, ditch the spring, save the weight! While your at it cancel your auto insurance, I did and I'm saving 3K a year x20 years? Yeah that is 60 K in my pocket! Course I'm bullshitting you. Why NOT run the spring? Just like Insurance, if you need it, it's there. If your radiator is the least bit restricted, it will collapse the lower hose without the spring.
                                     
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                                    • 71DodgeDemon340

                                      71DodgeDemon340 FABO Gold Member FABO Gold Member

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                                      The space i save without the spring adds a few more ounces of coolant to my capacity.
                                       
                                    • AJ/FormS

                                      AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s

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                                      The pressure in the cooling system of a running engine, is not the same everywhere all the time. The suction side is at least 30degrees cooler than the hot side. That alone produces a pressure differential. The pump is not very good at sucking, but it's real good at pushing. But all that hot water from the two sides of the engine comes crashing together under the stat house, and then has to do a 90* turn and get jammed thru the stat restrictor. Then once thru there it bursts into the top hose, an area about 3 or 4 times greater than what it just squeezed thru. Now the coolant loses velocity as it drops into the top tank. But the pump is still pushing, so the hot coolant has to migrate down the tubes, a foreign operation to be sure. On it's way down to the lower tank, it sheds a lotta heat. Then the now cooled fluid has to enter the lower hose, again a reduction in area, so it has to speed up. Next it enters the hot pump, and is immediately assaulted by the very hot water coming from the bypass circuit, and whatever is coming or not from the heater circuit. Finally it gets smashed to smithereens by the pump, jammed thru the two tiny holes into the water jackets, forced along the cylinder walls, up the backside and now returning to the front, whilst picking up heat in the heads. And then plowed into the stat-house again, like hitting a brick wall.
                                      It's a total wonderment. I'd like to be a water molecule and go for that ride.
                                       
                                      Last edited: Aug 2, 2018
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                                      • C130 Chief

                                        C130 Chief Mechanical Genius

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                                        Below about 300 feet in elevation a 195 degree thermostat should open before a significant amount of pressure builds in the system. An expansion spring in the lower hose is your friend. Unless they somehow went away from the new 2019 RAM trucks, Mopar still installs them.
                                         
                                      • jobrated_man

                                        jobrated_man 1965 Valiant and Dart

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                                        One for the 273 in 65 Valiant, and another for the poly 318 in the W200 power wagon (1960)
                                         
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