Get me a thermo, stat!

[jaybee]

Here's a really good and thorough explanation of thermostats. There's a lot more to it than you'd think for the single engine component we probably think of less than any other. It goes into the historical progression of thermostats and their development over time. The writing is meant to be directed at Jaguar owners, but it includes:

• How the bypass system works and why it doesn't have to be closed
• Systems that do attempt to close the bypass when the radiator circuit is being used
• The Ford 351C/M system, which is really a stand alone
• Reverse flow systems
• Thermostats with parameters modified by electronic inputs
• The Davies Craig system, which uses no thermostat
• Brand new systems which use an electronic valve in place of a thermostat for very rapid warmup and precise temperature regulation

https://www.coolcatcorp.com/thermostats/Bypass%20Systems.html