>John wrote:
>
>>Today I pulled the thermostat (it's a 160 deg), and tested it on
>>the stove. It
>>fully opens and closes, but it appears to "shudder" or step as it opens. It
>>also looks like the bi-metallic piston is off center so I'm off to the parts
>>store to get a $5.00 cheapy - this time a 185 deg. If the thermostat change
>>doesn't cure the overheating the cause is either the radiator or a
>>blockage in the block/head.
I did a very informal study in my 1960 TR3A in Phoenix 110F weather.
I removed the thermostat & drove my car. I put in an outer ring of a
thermostat without the inner-ring & drove the car. I then put in a
regular 165 F thermostat & drove the car. I found absolutely no
difference in operating temps.
John
John A. Wise, Ph.D., CPE
Dept of Distance Education
Embry-Riddle University
5483 West Potter Drive
Glendale, AZ 85308-9334 USA
Tel-hm: (+1) (623) 376-9632
E-mail: Wise@erau.edu
http://home.earthlink.net/~johnwise
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