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Author Topic: heater hose  (Read 872 times)

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Offline cmk-2

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heater hose
« on: October 06, 2015, 12:54:24 PM »
I want to put a cut off valve in my heater hose to stop the hot air coming into the cabin. Does anyone know what the inner dia. of a stock 1978 Trans Am with W72 heater hose is and what is a good cut off valve?
Thanks Robin
Destin,Fl
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Offline Wallington

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Re: heater hose
« Reply #1 on: October 06, 2015, 11:34:00 PM »
One's 3/4" and the other is 5/8". Should say on hose if not worn off.
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Offline y88rick

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Re: heater hose
« Reply #2 on: October 07, 2015, 06:40:46 AM »
That may help but isn't a full cure. Have headers? A/c box cracked?
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Offline Wallington

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Re: heater hose
« Reply #3 on: October 07, 2015, 07:02:00 AM »
All just smaller parts of larger issue. For what it's worth most heater valves don't fully close either, just restrict to a dribble, still allows coolant to circulate .
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Offline cmk-2

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Re: heater hose
« Reply #4 on: October 07, 2015, 08:56:36 AM »
Thank you for the information. I live in Florida and a Black/Black Trans Am with T-Tops so the A/C needs all the help it can get.
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