Hot passenger compartment
Thread Starter
8th Gear
Joined: Sep 2005
Posts: 8
Likes: 0
From: Virginia Beach VA
Hot passenger compartment
I have a 77 L-82 where the "Switch-Vacuum Water Valve Control" no longer functions and kicks a "ton" of hot air into both the passenger and driver areas. i've checked with the local corvette place and have faced "no joy." anyone out there know where i can find one? i can handle the "heat" but it makes it uncomfortable for my wife and anyone else sitting in the passenger seat. all replies are welcomed.
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
I have a 77 L-82 where the "Switch-Vacuum Water Valve Control" no longer functions and kicks a "ton" of hot air into both the passenger and driver areas. i've checked with the local corvette place and have faced "no joy." anyone out there know where i can find one? i can handle the "heat" but it makes it uncomfortable for my wife and anyone else sitting in the passenger seat. all replies are welcomed.
Melting Slicks
Joined: Feb 2002
Posts: 2,625
Likes: 0
From: Cut n Shoot TX
You know, I don't even have my heater hooked up. the hose is bypassed at the water pump. But in the summer, with the vette running at 190 degrees, my feet still burn up through the firewall. Any fixes here???
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
Lots of threads in the archives on dealing with cabin heat.
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Get a thick piece of foam and wrap it over the transmission at the tunnel opening. That blocks the hot air from going down the tunnel and directs it under the car.
Melting Slicks
Joined: Feb 2002
Posts: 2,625
Likes: 0
From: Cut n Shoot TX
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Melting Slicks
Joined: Oct 2004
Posts: 2,662
Likes: 8
From: Knoxville Tennessee
Cut both heater hoses and install water cuttoffs. This will eliminate the heat in the cabin during summer months. Open them in the winter when heat is needed. Works great and is a cheap fix.
Bernie
Bernie
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
I find that a properly operating vacuum water valve works quite well, and lets you use the heater on those cool summer mornings.
Melting Slicks
Joined: Oct 2004
Posts: 2,662
Likes: 8
From: Knoxville Tennessee
Most control valves, even new ones do not completely close on the
C3s. Also the vent door in the rigt side pillar will stay open . Those valves are expensive and hard to find. I blocked mine shut. Also look for any holes in your firewall no matter how small and seal them. These things made my cabin comfortable!
Bernie
C3s. Also the vent door in the rigt side pillar will stay open . Those valves are expensive and hard to find. I blocked mine shut. Also look for any holes in your firewall no matter how small and seal them. These things made my cabin comfortable!
Bernie
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
Most control valves, even new ones do not completely close on the
C3s. Also the vent door in the rigt side pillar will stay open . Those valves are expensive and hard to find. I blocked mine shut. Also look for any holes in your firewall no matter how small and seal them. These things made my cabin comfortable!
Bernie
C3s. Also the vent door in the rigt side pillar will stay open . Those valves are expensive and hard to find. I blocked mine shut. Also look for any holes in your firewall no matter how small and seal them. These things made my cabin comfortable!
Bernie
Race Director
Joined: Jul 2002
Posts: 13,858
Likes: 0
From: A 12/8 man in a 4/4 world
I have a problem with my vacuum actuator on the heat/vent selector.
I manually selected the door so that any air goes to the vent.
This eliminated hot air on the feet and kicks it to the windshield.
as to floor heat, if you have long tube headers this will be a problem.
take batman's suggestion and do a search on cabin heat.
some 'cool' stuff done.
I manually selected the door so that any air goes to the vent.
This eliminated hot air on the feet and kicks it to the windshield.
as to floor heat, if you have long tube headers this will be a problem.
take batman's suggestion and do a search on cabin heat.
some 'cool' stuff done.
Melting Slicks
Joined: Sep 2000
Posts: 2,404
Likes: 418
From: Chester Virginia
I used a water control water from a Ford Ranger that allows the water to the heater core or diverts it so it does not enter the heater core. This way the water in the heater core will not conduct heater from the non flowing heated water. As it turned out the major source of heat was from the engine compartment leaking into the cowl area and into the air flowing through the heater/cooling box. Replaced the weatherstripping under the hood that seals to the front of the cowl area and the heat went away.
Roger
Roger
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07