Chip :
The entire system is under pressure, so unless you have TWO valves to shut
off the heater, there will be pressure in the core and hoses, and the
coolant will flow either way towards a leak. Of course, when you don't
have a leak, then the coolant doesn't flow, and it doesn't much matter
which side the valve is on. However, I believe the valve is actually
located on the 'hot' side of the heater core, since the pump is drawing
cooler water from the bottom of the radiator.
Randall
On Wednesday, August 25, 1999 7:51 AM, Chip19474@aol.com
[SMTP:Chip19474@aol.com] wrote:
>
> Well, you can tell that I'm not busy today at work.....
>
> I finally adjusted the heater water valve so it stays completely off when
the
> dash lever says OFF - whew - no more fried feet in the footwells!
>
> Yesterday afternoon the short stubby heater hose from the valve to the
heater
> core sprung a leak and promptly wet a host of items including the volt
reg
> and my feet. Not a big deal... I replaced it in short order, didn't lose
> much coolant...and I guess that's the point of my question.....it appears
as
> though the coolant was flowing through the heater core towards the valve
as
> opposed to through the core FROM the valve. With the valve partially
open,
> the coolant could pass through the "bad" hose with little resistance but
when
> I finally shut the valve off the coolant pressure built up in the hose
and
> found a weak spot to fail.
>
> Wouldn't it have made more sense to keep the heater core "cooler" by
stopping
> the coolant flow from the water pump at the valve rather than letting hot
> water eventually make it's way into the core by convection if the flow
comes
> from the pump unstopped?
>
> Geez, I hope you're all having as good a day as I am avoiding work!
>
> Cheers,
>
> Chip Krout
> '76 TR6 CF57822U (Being Reborn For Y2K)
> '70 Spit Mk3 FDU78512L (Fun Driver)
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