My 73 addition
Thread Starter
Racer
Joined: Jun 2011
Posts: 300
Likes: 3
From: kempton park Gauteng
My 73 addition
Hi All ,
A while back i posted that my new / old car had finally arrived safe and sound in my country and i had wrapped it under a duvet while i went on our summer vacation .
Well now thats long gone and the usual safety checks have been done , hoses changed and the usual , but last night i was changing the lamp in the storage compartment , ( shew you need to be a contortionist ) and with a torch in hand i saw a vacuum pipe and an actuator in the compartment under the vent slats .
Is this a vacuum operated flap for air out from the storage area ?? Its so rusted i doubt it works , but what operates it ?? does it operate from the forward vent controls ?
Appreciate your help guys
John
A while back i posted that my new / old car had finally arrived safe and sound in my country and i had wrapped it under a duvet while i went on our summer vacation .
Well now thats long gone and the usual safety checks have been done , hoses changed and the usual , but last night i was changing the lamp in the storage compartment , ( shew you need to be a contortionist ) and with a torch in hand i saw a vacuum pipe and an actuator in the compartment under the vent slats .
Is this a vacuum operated flap for air out from the storage area ?? Its so rusted i doubt it works , but what operates it ?? does it operate from the forward vent controls ?
Appreciate your help guys
John
Team Owner
Joined: Sep 2006
Posts: 31,235
Likes: 4,325
From: Westminster Maryland
Hi John,
I believe it's part of the Astro Ventilation system. It's on cars without a/c.
The idea was that fresh air would enter through the round vents on the dash and exit through the vents in the rear deck.
The 'H/C' wheel on the heater/defroster control operates a vacuum actuator on the vent doors. When the wheel is on 'C' the vent is open, when turned to 'H' the vent is closed so the heater will warm the car's interior.
Regards,
Alan
I believe it's part of the Astro Ventilation system. It's on cars without a/c.
The idea was that fresh air would enter through the round vents on the dash and exit through the vents in the rear deck.
The 'H/C' wheel on the heater/defroster control operates a vacuum actuator on the vent doors. When the wheel is on 'C' the vent is open, when turned to 'H' the vent is closed so the heater will warm the car's interior.
Regards,
Alan
Thread Starter
Racer
Joined: Jun 2011
Posts: 300
Likes: 3
From: kempton park Gauteng
Big Block 73
Hi John,
I believe it's part of the Astro Ventilation system. It's on cars without a/c.
The idea was that fresh air would enter through the round vents on the dash and exit through the vents in the rear deck.
The 'H/C' wheel on the heater/defroster control operates a vacuum actuator on the vent doors. When the wheel is on 'C' the vent is open, when turned to 'H' the vent is closed so the heater will warm the car's interior.
Regards,
Alan
I believe it's part of the Astro Ventilation system. It's on cars without a/c.
The idea was that fresh air would enter through the round vents on the dash and exit through the vents in the rear deck.
The 'H/C' wheel on the heater/defroster control operates a vacuum actuator on the vent doors. When the wheel is on 'C' the vent is open, when turned to 'H' the vent is closed so the heater will warm the car's interior.
Regards,
Alan
Thanks a stack for your reply ,
The car is a non a/c model and i was only doing some minor work on it as i want to be able to drive and enjoy it before i get my 80 vette back from the paint shop and begin the long re-assembly road .
If it does not work i will leave it until later , now that i know what it is and just concentrate on the things that matter . I did have problems with the car when i got it as it stood in a warehouse in the states for 18 years or so and the vacuum system on the lights did not work e.t.c
I have replaced all the parts i could find faulty and they do work now although the left unit does open slightly slower than the right , i will now make sure that the hose feeding the unit in the back for the vent does not have a leak , as i am sure that any vacuum leak is not helping.
Thanks a stack Alan , incidentally i do look at as many of the threads you reply to , so i am really grateful that you picked up on my question , i am sure i will have lots more for you as i tackle the task of both vehicles,
Thanks to all the guys who helped with my question
John
Thread Starter
Racer
Joined: Jun 2011
Posts: 300
Likes: 3
From: kempton park Gauteng
Big Block 73
Thanks a stack for your help , along with Alan's description of how it operates i am sure i will be able to sort this unit out at a later stage . Just going to enjoy the warm summer cruises for now though .
John
Race Director
Joined: Aug 2007
Posts: 10,977
Likes: 19
From: Canboro Ontario
I would suggest you go to Tom's site. There is some great information there, that will help you.
Click on this link.
http://www.73spot.com/
Click on this link.
http://www.73spot.com/
Race Director
Joined: Apr 1999
Posts: 15,136
Likes: 477
From: NM
I would suggest you go to Tom's site. There is some great information there, that will help you.
Click on this link.
http://www.73spot.com/
Click on this link.
http://www.73spot.com/
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Thread Starter
Racer
Joined: Jun 2011
Posts: 300
Likes: 3
From: kempton park Gauteng
Hi Tom ,
Thanks a stack i will have a look at the site , i need all the help i can get with the vette,s there are a couple of good guys in South Africa who specialize in classic car rebuilds ,but very few who have extensive knowledge of the corvette alone , thats why all the information i get from guys like yourselves on the forum i print and save in files for future use. The AIM and all the workshop manuals are fantastic but its far easier to follow the descriptions and advise from members who have come across the same thing or had the same problems with their cars .
You guys are great ,
John
Thanks a stack i will have a look at the site , i need all the help i can get with the vette,s there are a couple of good guys in South Africa who specialize in classic car rebuilds ,but very few who have extensive knowledge of the corvette alone , thats why all the information i get from guys like yourselves on the forum i print and save in files for future use. The AIM and all the workshop manuals are fantastic but its far easier to follow the descriptions and advise from members who have come across the same thing or had the same problems with their cars .
You guys are great ,
John
Thread Starter
Racer
Joined: Jun 2011
Posts: 300
Likes: 3
From: kempton park Gauteng
Hi oldsarge,
Thanks for pointing me in the right direction , i will check the site out , and now that everyone mentions astro ventilation i had a look around the car last night and noticed that the windows are etched with the astro decal . Can you tell me what is significantly different or better with the Astro system compared with a non Astro vette . This car is a non A/c car and let me tell you is super hot in the cabin on a 35 deg plus day in South Africa , but its going to be a real pleasure to drive on a winters afternoon into the African sun set .
Cheers and thanks,
John
Thanks for pointing me in the right direction , i will check the site out , and now that everyone mentions astro ventilation i had a look around the car last night and noticed that the windows are etched with the astro decal . Can you tell me what is significantly different or better with the Astro system compared with a non Astro vette . This car is a non A/c car and let me tell you is super hot in the cabin on a 35 deg plus day in South Africa , but its going to be a real pleasure to drive on a winters afternoon into the African sun set .
Cheers and thanks,
John