On Wed, 27 Sep 2000, lbprince wrote to mg-t@autox.team.net:
> There is an excellent article on thermostats by Neil Cairns, the
> British MG authority, in the December 1998 issue of the Bulletin of
> the Octagon Car Club.
> Cairns claims that the bypass may be blocked as there is a tiny bleed
> hole in a modern thermostat to assist system filling. He states: " A
> bypass is not needed, 5,000,000 'A' series Metros cannot be wrong,
> they had their's deleted"
Whether or not a thermostat bypass is necessary depends on how the engine
and cooling system are designed. What is appropriate for the Metro
A-Series is not necessarily appropriate for other cars.
Not all modern thermostats have that bleed hole. Again, that is
determined by the design of the cooling system for which the thermostat is
intended. In any case, when there is a bleed hole it's function is to
prevent air from being trapped in the engine water passages when the
cooling systemn is filled. It is not intended to allow water flow through
the engine when the thermostat is closed, nor is it a large enough hole to
serve that purpose.
--
Chip Old 1948 M.G. TC TC6710 XPAG7430 NEMGTR #2271
Cub Hill, Maryland 1962 Triumph TR4 CT3154LO CT3479E
fold@bcpl.net
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