C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

78 A/C question

Thread Tools
 
Search this Thread
 
Old Apr 27, 2022 | 10:36 AM
  #1  
ukjohn's Avatar
ukjohn
Thread Starter
Racer
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Oct 2018
Posts: 457
Likes: 132
From: England
Default 78 A/C question

Just doing the finishing touches to the reinstatement of my aircon. Does anyone know where I should attach the sensor tube for the thermal switch? It seems sensible to me to put it where the end of the orifice tube is (which would be just around where the steady bracket is). However the previous owner had it lower down (where the red arrow is) although I doubt this was the original setup as the tube was only attached with a jubilee clip and there was no insulation . On the subject of insulation, is it a good idea to use some thick, reflective pipe insulation, as the exhaust is very close and heats up the evaporator inlet pipe and the evaporator housing quite considerably.


Reply
Old Apr 27, 2022 | 10:54 AM
  #2  
interpon's Avatar
interpon
Le Mans Master
Supporting Member
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jun 2019
Posts: 7,658
Likes: 2,470
From: Indiana
Default

see post #8
https://www.corvetteforum.com/forums...ning-unit.html

you can buy the putty to surround.. i have pics somewhere
Reply
Old Apr 27, 2022 | 10:57 AM
  #3  
interpon's Avatar
interpon
Le Mans Master
Supporting Member
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jun 2019
Posts: 7,658
Likes: 2,470
From: Indiana
Default

here it is a 79 i did.. get it at lowes.. electrical.. 4 bucks

Reply
Old Apr 27, 2022 | 11:07 AM
  #4  
ukjohn's Avatar
ukjohn
Thread Starter
Racer
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Oct 2018
Posts: 457
Likes: 132
From: England
Default

Thanks Interpon, looks like you have got the sensor attached low down. Unfortunately there is no Lowes in the UK. I'm thinking of using something like you have got on your heater hose. Have you also put some insulation on your evaporator box? It looks a bit different to mine.
Reply
Old Apr 27, 2022 | 12:02 PM
  #5  
interpon's Avatar
interpon
Le Mans Master
Supporting Member
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jun 2019
Posts: 7,658
Likes: 2,470
From: Indiana
Default

Originally Posted by ukjohn
Thanks Interpon, looks like you have got the sensor attached low down. Unfortunately there is no Lowes in the UK. I'm thinking of using something like you have got on your heater hose. Have you also put some insulation on your evaporator box? It looks a bit different to mine.
more than you want to know about my heat mitigation on my 79..
https://www.corvetteforum.com/forums...79-w-ac-3.html
dope putty is called duct seal..4 bucks i am sur eyou can find locally..
https://www.lowes.com/pd/Gardner-Ben...B&gclsrc=aw.ds


Reply

Get notified of new replies

To 78 A/C question





All times are GMT -4. The time now is 10:01 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE