RE: Cooling system mods

[Robert Ducker <bducker@domain.elided>]

At 10:02 AM 10/24/97 +1000, Brian.Tink@domain.elided wrote:
>What's this air conditioning stuff??
>
>My cars come with an air-con system called  "ALL-X"
>
>           ALL  = all windows down and in the case of the stag top off, and 
>            X   relates to the speed in either MPH or KPH
>
>keep staggering
>
>Brian
> <snip>

Yeah, I probably won't use mine very much either, but I want it to work
anyway (words to live by!).
But getting back to overheating, another thought I had relates to the disk
on the back of the mark II thermostat. After thinking about it, it seems to
me that this disk should contact the back of the housing when the
thermostat is installed, so that the spring pressure will only allow
coolant flow through the bypass passage when there is high pressure (and
which will increase as it opens). As I recall, mine did not install under
spring pressure. If you do the math, a 1/2 open thermostat is only open
about 1/8 inch, so it seems likely that the disk must be installed closer
than that, at least. My version of the shop manual doesn't mention anything
about this, but they could be assuming that a correctly manufactured part
(and correctly machined housing) is being used! Does anyone have any better
information?

Robert Ducker