I noticed something I had not noticed before on my 67 SB car. I have a nice good condition overflow tank, new hose to the radiator from the tank, and brand new Dewitt's original type rad. Also new repro clamps on the hose connections on the tank and the radiator. I have seen no leaks in normal service. That said, I noticed that with the car warmed up and the system under pressure, if I grab the hose at either end (rad or tank) about an inch or less from the fittings and squeeze slightly or wiggle the hose, pressure hisses out of the fitting and coolant spurts out with it. This happens at both ends!! Clamps are tight, and are located just outside of the expanded section of the tube (but not on top of it). If I let go of the hose it doesn't appear to leak. Is this normal?? Should I use some sort of sealant on the tube stubs prior to slipping the hoses on?? I suspect that if I replace the factory style clamps with worm clamps that would apply more uniform pressure on the hose and it would seal, but I would like to stick with the factory style...
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Re: Surge tank to Rad hose leakage with new parts!
Tim------
No sealant should be required. I think that you need to further tighten the clamps. Not a lot; just a little at a time until the condition you described stops.In Appreciation of John Hinckley -
And then, stop squeezing your hose... *NM*
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Re: O'flow tank hose leak
Tim, anytime I install heater hoses or overflow tank hoses, I use a small amount of clear silicone wiped around a clean male end of the joint. I find it beneficial, particularly when using corbin style clamps as on my '64. Just my preference.
CharlieComment
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Re: O'flow tank hose leak
Trivia - back in those days (and still done today), assembly plants use "rose water" (50-50 mix of alcohol and water) to ease assembly of rubber hoses onto metallic tubes; the "rose water" evaporates shortly after assembly and doesn't cause later slipping of the joint, nor does it contaminate whatever fluid is contained in the system.Comment
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