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Easy Solution for a cooler Interior

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Old Mar 13, 2002 | 10:34 PM
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Default Easy Solution for a cooler Interior



I had a small leak in my heater core, rather the getting all excited a bought replacing the core or using rad sealer “ I have never had any luck with rad sealers working” I just simply removed the heater hose. I can’t believe the difference it made the interior was cool and very refreshing. I don’t think a lot of us need heat in our vettes. I will probably replace the heater core in the summer only because I like everything working But I don’t think I will hook up the heater hose. My 2 cents worth, it seems a lot of C3 owners go through a lot of hassle to solve interior temp problems.
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Old Mar 13, 2002 | 10:40 PM
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Default Re: Easy Solution for a cooler Interior (73-454)

Good tip. Some folks plumb a valve in line with the heater hose. Turn it on only when needed. The later C3s have a vacuum operated valve (at least I know mine does).

Speakin' of heat... Did you ever seal around your radiator? I recall a post where you were having overheating problems.

-Noel
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Old Mar 13, 2002 | 11:34 PM
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Default Re: Easy Solution for a cooler Interior (73-454)

I've heard people say that the fluid can stagnate (sp?) and cause problems with the heater. No personal experience though.
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Old Mar 14, 2002 | 09:56 AM
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Default Re: Easy Solution for a cooler Interior (73-454)

I removed my heater years ago and mounted my 3 MSD computers there, my coil, my starter relay and a whole bank of relays in it's place. To work on them I remove the passengers pannel and it is all right there.
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Old Mar 14, 2002 | 11:03 AM
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Default Re: Easy Solution for a cooler Interior (73-454)


I had a small leak in my heater core, rather the getting all excited a bought replacing the core or using rad sealer “ I have never had any luck with rad sealers working” I just simply removed the heater hose. I can’t believe the difference it made the interior was cool and very refreshing. I don’t think a lot of us need heat in our vettes. I will probably replace the heater core in the summer only because I like everything working But I don’t think I will hook up the heater hose. My 2 cents worth, it seems a lot of C3 owners go through a lot of hassle to solve interior temp problems.
Bubba did that to my car as well when the core started leaking ...Not much fun when driving with no heat...I like to drive year round personally so I bit the bullet....fixed it correctly and installed a shut-off valve to by-pass it in the summer :cheers:


[Modified by Alwyn678, 10:04 AM 3/14/2002]
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Old Mar 14, 2002 | 11:09 AM
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Default Re: Easy Solution for a cooler Interior (Alwyn678)

oh shut off vavle, now there is a good idea. thanks :yesnod: :yesnod: :cheers: :cool:
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Old Mar 14, 2002 | 11:10 AM
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Default Re: Easy Solution for a cooler Interior (73-454)

Checked the fuse box yesterday & my 'fuse' to the heater is blown....
...oh well, fan doesn't work anyhow - I get plenty of heat from my Big Block ! :D
...And to let out the hot air, I just put the top down - w-e-e-ee-e-e :cool:
Like yesterday, here in Texas it was in the high 70's and plenty of sun. :)
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Old Mar 14, 2002 | 11:16 AM
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Default Re: Easy Solution for a cooler Interior (verskel)

[...And to let out the hot air, I just put the top down - w-e-e-ee-e-e :cool:
Like yesterday, here in Texas it was in the high 70's and plenty of sun. :) [/QUOTE]

Cool that means we will have that Nice weather whild I am DRINKING BEER in Savannah on St. Patty's DAY.....Woo hoo......See ya on River ST!!!! :cheers:
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Old Mar 14, 2002 | 11:43 AM
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Default Re: Easy Solution for a cooler Interior (One GM A Tech)

Can someone post a pic of your shut-off valve. I'm very interested in the idea! Houston summers can be a bitch.
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Old Mar 14, 2002 | 12:46 PM
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Default Re: Easy Solution for a cooler Interior (tshort)

Here is mine....... this is now non A/C.
If you have A/C, the hoses are on the bottom of the big air box.
I have seen them at various locations in the hose, but a friend with a 73' put his valve under the box. Clean install, can't see it, only need to use it twice a year anyway.



Old one I had laying around.



[Modified by DaBo, 10:46 AM 3/14/2002]
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Old Mar 14, 2002 | 02:34 PM
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Default Re: Easy Solution for a cooler Interior (DaBo)

I recently replaced my heater core, and while I was doing that, I also picked up a seal kit for the heater box. The vacuum operated doors have foam seals on them to prevent the hot air from going to the wrong vent and to close the heater core off completely when the climate control is switched to cold air. Mine had never been replaced before and the seals were very poor shape after 30 years. The shut off valve is a good idea, but you can solve at least part of the hot air problem by replacing these seals.
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Old Mar 14, 2002 | 02:45 PM
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Default Re: Easy Solution for a cooler Interior (tshort)

Can anyone tell me if the shut off valve goes on the hose from the water pump or the intake? Or does it matter? I'm in the middle of putting in a new heater core and think its probably worth it to install one.
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Old Mar 14, 2002 | 02:54 PM
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Default Re: Easy Solution for a cooler Interior (TTop Tony)

Can anyone tell me if the shut off valve goes on the hose from the water pump or the intake? Or does it matter?
Put it on the hose from the intake. Or on both.

-Pedro
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Old Mar 14, 2002 | 02:57 PM
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Default Re: Easy Solution for a cooler Interior (Pedro'74)

Thanks Pedro
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Old Mar 14, 2002 | 03:03 PM
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Default Re: Easy Solution for a cooler Interior (TTop Tony)

As long as you are stopping the flow of water it does not matter. Mine and several others that I know of are on the hose from the water pump.
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Old Mar 14, 2002 | 03:05 PM
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Default Re: Easy Solution for a cooler Interior (DaBo)

Cool. It sounds like I can't screw it up then :D
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Old Mar 14, 2002 | 04:56 PM
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Default Re: Easy Solution for a cooler Interior (73-454)

Mine gets pretty hot also. I think I will install a shut off valve and look into the seal kit for the heater flapper door. Just getting the A/C woking. Summer is coming on quick in AZ.
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Old Mar 14, 2002 | 05:20 PM
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Default Re: Easy Solution for a cooler Interior (73-454)

One source of hot air into the interior, in A/C equiped cars, is a short tube that connects to the blower and the A/C box in the engine compartment. It is designed to supply cool air to the blower motor to keep it cool. If that tube is missing the blower is just drawing hot engine compartment air into the interior.

tom...
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Old Mar 14, 2002 | 07:16 PM
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Default Re: Easy Solution for a cooler Interior (DaBo)

I always thought that you had to install a "by pass" valve to allow the coolant to flow, Just not in the heater core. :confused: :confused:
and if you have a leaky core and that is why you are installing a valve then I would put it in the line form the intake because that is the input to the heater core this way the core receives no pressure.
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Old Mar 14, 2002 | 07:23 PM
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Default Re: Easy Solution for a cooler Interior (Pedro'74)

Can anyone tell me if the shut off valve goes on the hose from the water pump or the intake? Or does it matter?

Put it on the hose from the intake. Or on both.

-Pedro
My experience--with only one shut off valve in place, the fluid in the heater core still gets hot by convection. My first valve was in the inlet line which is the manifold hose. It simply took longer to get hot. After I added the second valve to the outlet hose, it stayed ambiant in the car.
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