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Coolant flow question

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Old Jul 27, 2015 | 07:25 PM
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Laughing Gas
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Coolant flow question
I am ready to do the cold a/c / heater hose valve mod. Just want to make sure I install it in the correct heater hose. I assume that the feed hose for the heater core is the one coming from the top of the water pump, and the return line goes into the front of the head? Can someone confirm this for me?
 
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Old Jul 27, 2015 | 08:21 PM
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I did this mod, I should be able to answer your question. But, I'm thinking its the other way around where the hot water off the head goes to the heater core. It will be a few days before I get out to the burned up mare but I'll look at it.
 
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Old Jul 27, 2015 | 09:51 PM
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The head hose is the "pressure" side I believe.
 
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Old Jul 28, 2015 | 12:26 AM
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Originally Posted by fordman67
The head hose is the "pressure" side I believe.
Correct, the water pump "pulls" the coolant threw the heater core.
 
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Old Jul 28, 2015 | 05:22 AM
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OK, so the head hose wins!
Thanks guys
 
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Old Jul 28, 2015 | 09:16 AM
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I wanted to know this as well. Good deal! Has this worked for you Glenn or is it worth doing? It's hot as Hades here in Texas, so I was going to do whatever helped.
 
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Old Jul 28, 2015 | 12:23 PM
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Brian, are you doing the bypass version or the shut-off version?
 
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Old Jul 28, 2015 | 02:29 PM
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I didnt know there were 2 versions. I bought the vacuum operated shutoff valve to put in there
 
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Old Jul 28, 2015 | 02:32 PM
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Gee thanks, Phil. Now that brings up another question...... Is it ok to just shutoff the flow before the heater core, or does it need to be a bypass?
 
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Old Jul 28, 2015 | 03:01 PM
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I've always heard that is ok just to stop the flow.
Sorry to cause you a headache.
 
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Old Jul 29, 2015 | 09:50 PM
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Originally Posted by 91 Dually
Gee thanks, Phil. Now that brings up another question...... Is it ok to just shutoff the flow before the heater core, or does it need to be a bypass?
The Vac mod is more convenient, a ball valve , ( or a pair of vice grips ) if you wish .
 
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Old Jul 30, 2015 | 06:49 AM
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Originally Posted by Action4478
The Vac mod is more convenient, a ball valve , ( or a pair of vice grips ) if you wish .
Good to see you around Rick.
 
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