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Topic: Re: Heater Core

in Forum: C3 Cooling and Heating Systems


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Re: Heater Core

Posted: 11/4/11 5:00pm Message 11 of 17
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JoeTrecca
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Charlottesville, VA - USA
Joined: 9/3/2010
Posts: 104
Vette(s): 1978 Silver Anniversary L82 Previously: 1965 300hp Coupe in 1967. 1967 435hp Coupe in 1968-70. 1969 350hp T-top w/ac and all power options.
 
Hi Ray, Did you ever find that heater part? If Zip-Corvette can't help for Vette parts you can try these guys down in Moyock:
 
http://www.dreamrestorations.com/    

questions@dreamrestorations.com

I'm trying to fire up some heat in my '78 L-82 w/AC. Does anyone know if the control valve on the heater hose leading in to the heater core should be open or shut when there is vacuum applied?




Joe T
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Re: Heater Core

Posted: 11/4/11 6:12pm Message 12 of 17
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crossfire1982
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Cramerton, NC - USA
Joined: 8/22/2006
Posts: 1094
Vette(s): black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion
Joe, I believe the valve is closed by the presence of vacuum and without vacuum it is open allowing water to flow.


Re: Heater Core

Posted: 11/4/11 7:10pm Message 13 of 17
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JoeTrecca
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Charlottesville, VA - USA
Joined: 9/3/2010
Posts: 104
Vette(s): 1978 Silver Anniversary L82 Previously: 1965 300hp Coupe in 1967. 1967 435hp Coupe in 1968-70. 1969 350hp T-top w/ac and all power options.
 
Thanks Chip, It seems that the valve is stuck shut, so for now I will take it out and re-join the hoses with a piece of straight tubing. We've had some cool mornings here in central VA!




Joe T

Re: Heater Core

Posted: 11/5/11 7:05pm Message 14 of 17
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JoeTrecca
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Charlottesville, VA - USA
Joined: 9/3/2010
Posts: 104
Vette(s): 1978 Silver Anniversary L82 Previously: 1965 300hp Coupe in 1967. 1967 435hp Coupe in 1968-70. 1969 350hp T-top w/ac and all power options.
The no-heat problem was not the control valve being stuck. Someone decided to loop the heater hoses in and out of the valve to bypass the heater core. This is what I found underneath:
 
 
Looks like a "fun" job to get the core hooked up again, but I will flush it and pressure-test it first!




Joe T

Re: Heater Core

Posted: 11/5/11 7:22pm Message 15 of 17
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danascar
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Germansville, PA - USA
Joined: 1/28/2010
Posts: 859
Vette(s): 1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. . 1999 C5 Convertible, 6 speed, Atomic orange, Oak interior.
Odds are very good that the reason they did that was because the heater core leaked. Mine is like that too because of leaking core. Winter project Exclamation


   

DanT

Re: Heater Core

Posted: 11/5/11 7:24pm Message 16 of 17
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yostusota
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York, PA - USA
Joined: 5/18/2010
Posts: 1518
Vette(s): 1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top
Joe be really careful taking off the old hoses..try and cut them along the heater core pipes so you can take the old hoses off in pieces..don't try and twist them off..chances are it could crack the core solder joints or pipes if you do..don't ask me how I know. Rich



My first parade at Carlisle 2010

Re: Heater Core

Posted: 11/5/11 7:57pm Message 17 of 17
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JoeTrecca
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Charlottesville, VA - USA
Joined: 9/3/2010
Posts: 104
Vette(s): 1978 Silver Anniversary L82 Previously: 1965 300hp Coupe in 1967. 1967 435hp Coupe in 1968-70. 1969 350hp T-top w/ac and all power options.
 
Thanks for the advice Dan and Rich. For now I might just get a personal space heater from Walmart and a DC power inverter. Or maybe a bottle of "personal antifreeze"!




Joe T

in Forum: C3 Cooling and Heating Systems


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