How do I get air out of the heater core, which is the highest point in my system?? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 01-12-2010, 10:57 AM
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How do I get air out of the heater core, which is the highest point in my system??

I have a 50 Chevy pickup, I put a 350 in it and a vintage air a/c system. The heater core with the vintage air system is up under my dash in a common configuration. However the heater core sits at least 6" if not more above the top of the radiator. Running the pickup, with the heater on I still can not get the heater core to fill. Any ideas?

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Old 01-12-2010, 11:02 AM
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disconnect the heater core and install a valve, holding the line higher than the ehater core pour water inot the core, shut the valve, reconnect line, open valve, water is now in heater core.
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Old 01-12-2010, 11:22 AM
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quick and easy, good idea.. one question though. Where to position my overflow tank. It won't be able to be down at the radiator level will it?
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Old 01-12-2010, 11:40 AM
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Quote:
Originally Posted by ap72
disconnect the heater core and install a valve, holding the line higher than the ehater core pour water inot the core, shut the valve, reconnect line, open valve, water is now in heater core.
Thanks for the tip, I wondering about that too









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Old 01-12-2010, 11:48 AM
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Quote:
Originally Posted by artillerystevens
Where to position my overflow tank. It won't be able to be down at the radiator level will it?
Sure- remember the overflow only actuates when the pressure exceeds the cap's pressure rating.
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Old 01-12-2010, 04:05 PM
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One of those yellow bucket fill kits may help you. They are not that expensive and they work well. Lisle makes one,, part # LIS24610
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