A couple of weeks ago I lost a blade off of the radiator fan. Boy, was that
exciting! I decided to use the opportunity to thoroughly inspect and test all
components of the cooling system. Anything I found with a problem I replaced.
Obviously, the fan is first on the list. As I read an information tech sheet
associated with the one source of the Texas Cooler I came across something
about which I would appreciate some lister input. The article points out that
the big Healey cooling system design has a bypass that circulates coolant
through the engine until the thermost at opens. If one is using an after
market, non-sleeved, regular type of thermostat which remains closed until
reaching temperature, there is no flow through the radiator core. Do I have
this right? The article suggest drilling a couple of small holes in the rim
of the thermostat to allow a small amount of flow until the thermostat fully
opens. In all the years I have owned a Healey I had never heard of this
before. What is the experience of the list members???
Marks 3
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