No spring inside silicone lower radiator hose

[nondem]

I replaced all my coolant hoses w/silicone ones w/constant tension clamps. It went fine with no leaks on a 100 mile test drive.
It occured to me after that - the new lower hose didn't have an internal spring to prevent collapse. It obviously wasn't an issue on my test drive but should I swap the spring over from the old one? I've read that it should have a spring and I've also read that the new silicone hoses have built in reenforcement to prevent collapse. I dunno what to believe.

 

[TheBoogieman]

No need for those anymore. I've never had a coil in any of mine.

 

[KennethS]

Back in the 80s I worked at auto parts stores and a lot of hoses had the internal spring, but I haven't seen one in a very long time.

 

[Link]

I think the one I took off (OEM) had a spring. Replacement Gates lower hose didn’t have a spring. Working perfectly fine.

 

[jeepguy03]

The lower hose of the 4.0 used to need the spring to keep it from collapsing. Fast forward to now, and it isn't needed, the hose material is much better.

 

[KennethS]

The topic of the lower radiator spring comes up regularly on one of the classic car forums I frequent. Folks who worked at GM back in the day explained that during vehicle assembly the cooling system was filled by pulling a vacuum on the system to draw a measured amount of fluid in without having to burp the system. The spring was to prevent the hose from collapsing due to the vacuum.

 

[Link]

The topic of the lower radiator spring comes up regularly on one of the classic car forums I frequent. Folks who worked at GM back in the day explained that during vehicle assembly the cooling system was filled by pulling a vacuum on the system to draw a measured amount of fluid in without having to burp the system. The spring was to prevent the hose from collapsing due to the vacuum.

I’m not sure that’s accurate. I have a vacuum fill tool and it collapses all hoses every time I pull a vacuum on the system. The vacuum in the cooling system then pulls the new coolant in. I’ve used the tool on multiple vehicles and ATVs.