Heater valves

[Doyt W. Echelberger]

The original valves are plastic, and the failure mode is for the two halves
to just split apart at some point, releasing a steady flow of coolant.

The replacement valves we are talking about are not plastic. They are
metal. And as far as I know they don't fail the same way BECAUSE they are
metal. The test is underway and results will be available in 2015.

Doyt Echelberger
87 5ktq with new metal heater valve from Autozone, about $15.....the valve,
that is.

 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>.
At 11:18 PM 11/14/2001 -0700, you wrote:
>Does anyone know what exactly gives out on the heater valve?  Is it a seal,
>presumably internal, metal fatigue?
>
>I open my heater valve before I shut the engine down in order to equalize
>the static pressure between the cool water inside the heater and the hot
>stuff outside.
>
>Not sure if it helps, but it used to prolong the life of heater valves aka
>reserve radiator control, on my various Coopers.
>
>Colin