Ultimate Air Conditioning Thread AC
Thread Starter
Advanced
Joined: Aug 2006
Posts: 92
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From: Cedar Park Texas
Ultimate Air Conditioning Thread AC
So, I have done some searching and I find info hear and there, but not quite what I am looking for.
If I am looking to keep very cool on 108 degree day in my 1969...what would be best AC system to use.
Stock
Modified Stock
Vintage Air
Something other than Vintage Air
I am just trying to get my 1969 to get as cold as mechanically possible on my 350 1969 coupe.
Thanks all! Feel free to add diagrams, etc to this thread so others who want to learn how to work/modify and research AC can hopefully have just one thread to view
Ryan
If I am looking to keep very cool on 108 degree day in my 1969...what would be best AC system to use.
Stock
Modified Stock
Vintage Air
Something other than Vintage Air
I am just trying to get my 1969 to get as cold as mechanically possible on my 350 1969 coupe.
Thanks all! Feel free to add diagrams, etc to this thread so others who want to learn how to work/modify and research AC can hopefully have just one thread to view
Ryan
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
If yours already has factory A/C installed, I would recommend that you get it up and running per original specs. You must remember that the temperature you can maintain inside the car is a combination of 1) the cooling provided by the A/C system; and 2) the amount of externally produced heat that is allowed to come into the interior. That second factor is what most C3 owners don't know how to deal with. There are so many sources of unwanted heat, and a 40 year old car with hard/smashed seals that don't keep that heat out anymore, it becomes difficult for the stock system (or any system, for that matter) to keep up with it.
There are lots of archived threads about all the detailed items that need to be checked/repaired/upgraded to reject and block heat in the C3, that the SEARCH function should be your first research effort. There are also several booklets that have been written on those various sources of unwanted interior heat and how to block them. You can check with some of the Corvette parts vendors and/or do internet search for some of that material.
I don't know that any aftermarket A/C system is going to be any better at keeping your car cooler than the original system could do...if repaired properly. So, if you have GM A/C system in yours, it would be most cost effective to go that way, I believe.
There are lots of archived threads about all the detailed items that need to be checked/repaired/upgraded to reject and block heat in the C3, that the SEARCH function should be your first research effort. There are also several booklets that have been written on those various sources of unwanted interior heat and how to block them. You can check with some of the Corvette parts vendors and/or do internet search for some of that material.
I don't know that any aftermarket A/C system is going to be any better at keeping your car cooler than the original system could do...if repaired properly. So, if you have GM A/C system in yours, it would be most cost effective to go that way, I believe.
Thread Starter
Advanced
Joined: Aug 2006
Posts: 92
Likes: 0
From: Cedar Park Texas
If yours already has factory A/C installed, I would recommend that you get it up and running per original specs. You must remember that the temperature you can maintain inside the car is a combination of 1) the cooling provided by the A/C system; and 2) the amount of externally produced heat that is allowed to come into the interior. That second factor is what most C3 owners don't know how to deal with. There are so many sources of unwanted heat, and a 40 year old car with hard/smashed seals that don't keep that heat out anymore, it becomes difficult for the stock system (or any system, for that matter) to keep up with it.
There are lots of archived threads about all the detailed items that need to be checked/repaired/upgraded to reject and block heat in the C3, that the SEARCH function should be your first research effort. There are also several booklets that have been written on those various sources of unwanted interior heat and how to block them. You can check with some of the Corvette parts vendors and/or do internet search for some of that material.
I don't know that any aftermarket A/C system is going to be any better at keeping your car cooler than the original system could do...if repaired properly. So, if you have GM A/C system in yours, it would be most cost effective to go that way, I believe.
There are lots of archived threads about all the detailed items that need to be checked/repaired/upgraded to reject and block heat in the C3, that the SEARCH function should be your first research effort. There are also several booklets that have been written on those various sources of unwanted interior heat and how to block them. You can check with some of the Corvette parts vendors and/or do internet search for some of that material.
I don't know that any aftermarket A/C system is going to be any better at keeping your car cooler than the original system could do...if repaired properly. So, if you have GM A/C system in yours, it would be most cost effective to go that way, I believe.
I want it as cold as possible. I did check the seals, insulation, etc...all good to go and new there. Now...what can we do to get ice on the windows
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
Modified stock for perf. The main thing I would change is the heavy A6 compressor on early models to one that uses less HP.
I replaced the R4 compressor with a ND 6P (8.2 C.I. & similiar to Sanden 508) which uses less HP & works great. Compressor, custom brackets & hoses to stock A/C system.
Vintage Air is a good option if non a/c car.
I replaced the R4 compressor with a ND 6P (8.2 C.I. & similiar to Sanden 508) which uses less HP & works great. Compressor, custom brackets & hoses to stock A/C system.
Vintage Air is a good option if non a/c car.
Thread Starter
Advanced
Joined: Aug 2006
Posts: 92
Likes: 0
From: Cedar Park Texas
Modified stock for perf. The main thing I would change is the heavy A6 compressor on early models to one that uses less HP.
I replaced the R4 compressor with a ND 6P (8.2 C.I. & similiar to Sanden 508) which uses less HP & works great. Compressor, custom brackets & hoses to stock A/C system.
Vintage Air is a good option if non a/c car.
I replaced the R4 compressor with a ND 6P (8.2 C.I. & similiar to Sanden 508) which uses less HP & works great. Compressor, custom brackets & hoses to stock A/C system.
Vintage Air is a good option if non a/c car.
Melting Slicks
Joined: May 2002
Posts: 2,716
Likes: 121
From: Sulphur LA
St. Jude Donor '05-'06,'11,'13-'14,'16,'18,'19,'24, '25
My factory AC is working to spec...and it just barely blows cold AC...I am natually hot blooded (I sleep with my room at 56 degrees at night), so the 'norm' doesn't apply to me I want it as cold as possible. I did check the seals, insulation, etc...all good to go and new there. Now...what can we do to get ice on the windows
I want it as cold as possible. I did check the seals, insulation, etc...all good to go and new there. Now...what can we do to get ice on the windows Your AC will work very well if correct but can be improved if you want to do a little more work.
Is it still R12?
Who charged it and did they use a charging cylinder or did they do it by hand?
Hows the air flow out the vents?
Has the evaporator coil been removed and cleaned properly?
There's allot of work to get it back to like new factory condition and once brought back to factory spec it will work very good.
Neal
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Burning Brakes
Joined: Aug 2005
Posts: 801
Likes: 1
That and put in the insulation collar above the bell housing.I also insulated the floor with husmat and installed the heat shield above the tranny.My vintageair sys hits 36 deg at the vents.If you already have air they make a kit replace it.I don't much about the factory air performance.Never had one that worked.Some of these othere guys might help you there.
Drifting
Joined: May 2005
Posts: 1,629
Likes: 4
From: Somers CT
There's also a mod you can do to install a C4 fan to increase the airflow. I havn't done it myself but I understand from reading other comments that it works real well getting more cool air into the cabin. Do a search, I'm sure you'll find some threads on it.
Ecklers is selling a new replacement A6 compressor that is a redesign of the original that is advertised to require less hp to turn it. That would be a nice option if it works as advertised since it would bolt up without changing anything.
http://www.ecklerscorvette.com/corve...1963-1976.html
Ecklers is selling a new replacement A6 compressor that is a redesign of the original that is advertised to require less hp to turn it. That would be a nice option if it works as advertised since it would bolt up without changing anything.
http://www.ecklerscorvette.com/corve...1963-1976.html
