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Silicone Coolant Hoses - Do They Leak?


YellowSeven

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If you look at pictures of silicone hoses on racing cars (F1 for example) they don't use the flat Jubilee type clamps, but use the type that has two round wires (look inside your washing macine if your'e not sure of the type). The load will be more concentrated under the wires than the flat strip.

 

Paul

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Mine don't leak with jubilee clips. I just slid them on and did-up the clips - check tightening at each 6000 mile check 😬

 

BRG Brooklands SV 😬 It seems that perfection is achieved not when there is nothing more to add, but when there is nothing more to take away. (Antoine de Saint-Exupery)

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Mikalor *thumbup* (although PaulD's wire ones look good also.

 

I find the main advantage with silicone coolant hoses is that they don't age harden and take on a "set" like the rubber/fabric ones do and so reseal very easily after any maintenance work.

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Several yrs ago I replaced all the hoses on my road going Cosworth and the specialist I got the silicone hoses from told me to smear a small amount of vaseline onto the metal or cast fittings before pushing the hoses on (silicone is not so forgiving as rubber on pitted surfaces and weepage can occur). I followed his advice and have never experienced any problems and I run quite a high output 300bhp unit so the system is well used!!

 

I replaced all my hoses this winter on the caterham after re-building the engine and again smeared with vaseline and so far no probs. A good quality stainless hose clip is necessary and don't use the cheap jubilee ones that have the ribbing going through to the inside as they will cut into the hose in time. And to clean just wipe over with soapy water but don't tell the missus it's her sink bowl 😬

 

Phil S7SVN

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