Ulix Goettsch wrote:
>
> I have never had an unsealed cooling system, but if it really is open to
> the atmosphere I would suggest that an overflow tank will not work.
> The water will overflow into the tank, but it will not
> be sucked back into the radiator since no vacuum can develop in the
> radiator.
> I.e. the radiator will suck some in some air rather than coolant through
> the tube.
> Am I missing something?
>
> Ulix
Ulix:
I too have never had an unpressurized system, which is what I think all
the hubbub is about. But that is different from saying an unsealed
system. I believe that radiators have always had caps, even if they
were allowed to spew all over the road when they felt like it through an
overflow tube (people, curb your cars!). If that overflow is directed
into a bottle of coolant with the end of the tube always submerged then
the overflow will simply increase the volume of fluid in the bottle when
it is hot and decrease it (by vacuum, provided that the radiator cap
does not leak) when the temperature goes down again (i.e., fluids expand
when heated and contract when cooled). The principle is the same as
when we use a tube, connected to our brake bleeder valves, that is
submerged in a jar of brake fluid to allow air to escape and fluid to be
sucked back into the system as one pumps the brake pedal (or pressurizes
the system some other way).
Although I'm sure most everyone probably already understood this
concept, I just wanted to make sure. No offense intended. And if I am
wrong about the TC and the system IS open to the atmosphere, my
apologies, and sympathies to the TC owners.
--
Rick Hoefle 1964 Tiger B9470508 - HIS
1969 MGC - HERS
|