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You wouldn't want to see any "cycling" of the temps., it's showing CHT (cylinder head temp) and the objective is to keep that as stable as possible.
 

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Discussion Starter · #4 ·
Thanks for the reply. The hose going to the thermostat is cool to the touch, the other hose is hot when engine is at temp. I guess the when the stat opens it pulls coolant from radiator into engine. Is this correct flow direction or vise versa?
 

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Yeah, that's what the diagram shows.

Small hose there is always flowing, and the radiator returns that way when needed. Both go from there to the water pump for distribution.
 
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