Quote:
Originally Posted by Chuck Sea/Tac
I’ve thought the same thing. I have a rebuilt engine in my test stand now , and was thinking of a way to stop flow thru the lower hose, to see if the radiator would then overflow as the block was emptied. However your petcock idea is an interesting way to prove the same thing!
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Chuck, If you were to block off the bottom hose, the block would not empty because there is nothing able to replace the water in there. All that would happen is the pump would turn and stir the water near the impeller and nothing would come out the top. The impeller might even cause cavitation.