1965 with a/c

All Models and Years
Post Reply
sh011956@aol.com
Posts: 9
Joined: Sun Jun 23, 2019 1:39 pm

1965 with a/c

Post by sh011956@aol.com »

I've been working on the ac in my 65. converted to later condenser, added 2 9" fans, changed to sanden compressor, pulled vacuum and charged with r134. The temp of the air is 49 to 50 degrees, outside temp is 94.
is there a way that I can get colder air?
Attachments
20200807_134805.jpg

sh011956@aol.com
Posts: 9
Joined: Sun Jun 23, 2019 1:39 pm

Re: 1965 with a/c

Post by sh011956@aol.com »

Or is this as good as it gets?

joelsplace
Posts: 1164
Joined: Wed Oct 13, 2010 12:51 pm
Location: Northlake, TX

Re: 1965 with a/c

Post by joelsplace »

Is that the temperature sitting still or running down the highway?
My G30 with 134 that actually cools well runs that high sitting still but it drops into the high 30s running down the highway.
113 Corvairs, 5 Ultravans and counting
Northlake, TX

VairCare
Posts: 5
Joined: Mon Sep 23, 2019 8:33 pm

Re: 1965 with a/c

Post by VairCare »

I see in the picture that you are missing the sealing strips on the condenser along the top and bottom. There should be thick foam strips along the top and bottom of the condenser toward the firewall. Also, are you using the system in recirculate mode,? ie AIR lever up? If you run in outside air mode in high humidity conditions, it will not get very cold, because you can`t cool air below the dew point temp. Make sure the kick vents are closed tightly.
Hope these tips help you keep cool.

sh011956@aol.com
Posts: 9
Joined: Sun Jun 23, 2019 1:39 pm

Re: 1965 with a/c

Post by sh011956@aol.com »

Thanks for the input y'all. I checked the temp at the evaporator and it's at 40 degrees. I think that I'm not going to try to improve it anymore. I will add that foam seal though . Regards

User avatar
bbodie52
Corvair of the Month
Corvair of the Month
Posts: 9710
Joined: Mon Aug 06, 2012 12:33 pm
Location: Lake Chatuge Hayesville, NC
Contact:

Re: 1965 with a/c

Post by bbodie52 »

Image
Seal, 66-67 Stock & Repro Condenser – C11811 1 lb.These two foam seal strips are required on 66-67 condensers. Dark grey, stock with a 1" x 1" cross section

A/C SEAL: 66-69 Foam seal goes between condenser & engine firewall. 1 = Set of 2. Original style material.


:link: http://www.corvair.com/user-cgi/catalog ... w_page=324

Part number C11811: 66-67 STOCK & REPRO A/C CONDENSER SEALS

Weight: 1 lbs 0 oz
Catalog Page(s): 321,324,AC-10(RM19)
Price: $ 14.60
Brad Bodie
Lake Chatuge, North Carolina
Image 1966 Corvair Corsa Convertible

66vairguy
Posts: 2241
Joined: Tue Dec 21, 2010 3:44 pm

Re: 1965 with a/c

Post by 66vairguy »

Your numbers for 94F are fine. Remember your dealing with mid 60's A/C system upgraded to R134a. I have a R134a upgraded system and by 60's standards it works well, but don't expect 21st century performance. One critical area is the condenser. I see you have the 66 style condenser. If it's an original R12 unit it won't "cool" the condensed R134a as well as the newer parallel/serial R134a condenser Clark's sells (same size).

Two critical items -- DO NOT adjust the evaporator thermostat to allow the evaporator to drop below 32F (do on a mild day with fan on MED) or it will freeze up the water condensation and no air will get through the evaporator (yes it happens). So the evaporator cannot get colder than 32F (30F for short periods), BUT you can cool the car better with higher air flow by replacing the old (and by now usually slow) A/C blower motor with a high speed unit -- PM134. Keep in mind there are limits on how cold you can get 94F inlet air due to the size of the evaporator core. The other issue is overcharging R134a. Unlike R12 you can't overcharge R134a or the refrigerant pressures will go too high on warm days reducing cooling and possibly damaging the compressor.

sh011956@aol.com
Posts: 9
Joined: Sun Jun 23, 2019 1:39 pm

Re: 1965 with a/c

Post by sh011956@aol.com »

Thanks for the response. I have been comparing the air temp with my 2019 Toyota that has 50 years of improvement behind it. I have decided that my Corvair ac is working pretty good.

Post Reply

Return to “Ask your Mechanical Questions here”