| Coolant flow diagram in GMCMI Winter 2020 backwards? [message #353726] |
Sun, 12 April 2020 09:27  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
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So.. full disclosure, I am only a farmboy mechanic so I'm no expert in anything... but isn't the coolant flow in the Winter 2020 edition of GMCMI magazine Tech Corner, flowing backwards?
Should not the hot coolant flow out of the top of the engine through the opened thermostat to the top of the rad??? And the cool coolant flow from the bottom of the rad into the bottom of the engine?
If the diagram is right... as soon as the coolant in the engine gets hot enough to open the thermostat, cold coolant would then flow through the thermostat and immediately close it... leaving hot coolant in the rest of the engine.
I did not go look up other diagrams, so maybe I am dead wrong here... but if so it challenges my farmboy engineering skills.
The image is credited to Encyclopedia Britannica Getty Images so I am assuming this diagram has been checked over by those in the know...
Or maybe is this like electron current flow vs conventional (hole) flow??
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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