Soon I plan start as an automotive A/C specialist and I would like to enquire how many people would be interested in if I could get your old A/C systems cold again without the need for a retrofit so as you can keep your car factory spec and have cold air too?
I would also be working on the retrofitted and new systems but my focus would be on servicing the pre R134a systems that primarily used the now illegal R12 gas.
Your thoughts and suggestions please?
R12 Air Con system cool again
Started by
TerrA LX
, Feb 10 2010 12:08 PM
19 replies to this topic
#1
TerrA LX
-
- Members
-
- 14,241 posts
Fulcrum Fixture
- Location:Sid 'n' knee
- Joined: 31-May 06
Posted 10 February 2010 - 12:08 PM
#2
FastEHHolden
-
- Members
-
- 5,114 posts
Steptoe
- Location:Central Coast NSW
- Joined: 16-November 05
Posted 10 February 2010 - 12:32 PM
How? or is that a trade secret?
#3
_Big T_
_Big T_
-
- Guests
Posted 10 February 2010 - 01:44 PM
Would be popular in QLD. I think of a few people off hand who would be interested.
#4
wot179
-
- Members
-
- 6,784 posts
Green Eggs and Spam
- Name:Jesus Bloody Christ
- Location:Sunny Santa Maria
- Car:Goon
- Joined: 06-February 09
Posted 10 February 2010 - 04:42 PM
I can give you a car to service and gas up right now.
#5
TerrA LX
-
- Members
-
- 14,241 posts
Fulcrum Fixture
- Location:Sid 'n' knee
- Joined: 31-May 06
Posted 10 February 2010 - 06:44 PM
How? or is that a trade secret?
I could tell you but I would have to kill you...
Would be popular in QLD. I think of a few people off hand who would be interested.
If they are going to toranafest I may work out if it would be worth doing a few and stay the weekend as I hope to be mobile.
I can give you a car to service and gas up right now.
Soon as I'm up and running mate I will pop over.
#6
dattoman
-
- Administrators
-
- 16,471 posts
Do I feel lucky? Well, do ya, punk?
- Name:Neil
- Location:Perth Western Australia
- Car:LX SS , 76 Cadillac , 3 x dattos
- Joined: 04-February 07
Posted 10 February 2010 - 09:48 PM
My Caddy is R12
Still cold but a legal update is always nice
Yanks use a thing called Freeze12
An R12 replacement thats not R134... no idea what it is though
Still cold but a legal update is always nice
Yanks use a thing called Freeze12
An R12 replacement thats not R134... no idea what it is though
#7
View GaragePosted 11 February 2010 - 04:34 AM
According to a fridge guy I know none of the R12 replacements are up to par for some original cooling systems and can result in substandard performance and even compressor damage. I don't know whether any car air con systems fit into this category or not (nor did he, that's why I was quizzing him).
#8
TerrA LX
-
- Members
-
- 14,241 posts
Fulcrum Fixture
- Location:Sid 'n' knee
- Joined: 31-May 06
Posted 11 February 2010 - 10:06 AM
According to a fridge guy I know none of the R12 replacements are up to par for some original cooling systems and can result in substandard performance and even compressor damage. I don't know whether any car air con systems fit into this category or not (nor did he, that's why I was quizzing him).
There are basically 4 differing categories of R12 that operate under different pressure/temperature so in short, fridge gas is different to A/C gas.
#9
Posted 11 February 2010 - 02:02 PM
Good thing we never got around to trying to do a backyard job on the A/C then... 
#10
_1uzbt1_
_1uzbt1_
-
- Guests
Posted 12 February 2010 - 11:13 AM
My Caddy is R12
Still cold but a legal update is always nice
Yanks use a thing called Freeze12
An R12 replacement thats not R134... no idea what it is though
Will that be decommissioned before its bought into oz??
#11
Orange SS
-
- Members
-
- 523 posts
Forum Fixture
- Name:Matt
- Location:Gold Coast
- Car:1976 LX SS Hatch
- Joined: 27-January 06
Posted 12 February 2010 - 11:53 AM
I had a guy do mine a few years ago with some mixture and he claimed it would work as good as the R12, however it did not. I have since had mine replaced with the new stuff and it works really well - but it did cost me alot. If you have found something to use as a replacement that works, you'll be onto a winner!
#12
_1uzbt1_
_1uzbt1_
-
- Guests
Posted 12 February 2010 - 02:50 PM
Blends can be like that as the different gases boil off at different rates
#13
TerrA LX
-
- Members
-
- 14,241 posts
Fulcrum Fixture
- Location:Sid 'n' knee
- Joined: 31-May 06
Posted 12 February 2010 - 06:34 PM
My Caddy is R12
Still cold but a legal update is always nice
Yanks use a thing called Freeze12
An R12 replacement thats not R134... no idea what it is though
Will that be decommissioned before its bought into oz??
I have not heard of any laws governing that.
#14
dattoman
-
- Administrators
-
- 16,471 posts
Do I feel lucky? Well, do ya, punk?
- Name:Neil
- Location:Perth Western Australia
- Car:LX SS , 76 Cadillac , 3 x dattos
- Joined: 04-February 07
Posted 12 February 2010 - 09:37 PM
Theres been no request too yet
Nothing on the import papers
I know they do with the Jap cars but no-ones said anything yet about it
Guess I'll find out when it arrives
Nothing on the import papers
I know they do with the Jap cars but no-ones said anything yet about it
Guess I'll find out when it arrives
#15
antelopeslr5000
-
- Members
-
- 1,022 posts
Forum Fixture
- Location:Toowoomba, Queensland
- Car:1977 LX SL/R 5000
- Joined: 10-November 05
Posted 17 February 2010 - 07:57 PM
HR12 is a suitable replacement for R12 and R134a. That's what I'm planning to use in my LX if the evaporator ever turns up from Hot Rod Air! Probably be Winter by the time it arrives... 
#16
_torbirdie_
_torbirdie_
-
- Guests
Posted 18 March 2010 - 10:37 PM
HR12 is a suitable replacement for R12 and R134a. That's what I'm planning to use in my LX if the evaporator ever turns up from Hot Rod Air! Probably be Winter by the time it arrives...
hr12 wont work properly in the lx, that's assuming you have the fact air vir system. Adjusting VIRs to perform properly on anything other than r12 is a black art as best.
#17
TerrA LX
-
- Members
-
- 14,241 posts
Fulcrum Fixture
- Location:Sid 'n' knee
- Joined: 31-May 06
Posted 18 March 2010 - 10:48 PM
HR12 is a suitable replacement for R12 and R134a. That's what I'm planning to use in my LX if the evaporator ever turns up from Hot Rod Air! Probably be Winter by the time it arrives...
HR12 operates on totally different pressures compared to R12 or R134a.
Be warned to that it is flammable, so if you use it make 100% sure that there are no leaks.
Other problems are compatible lube oils and as above with torbirdie, getting system pressures correct for efficiency will be hard.
You have been warned.
My advice would be to run R134a where ever you can, this is the way the industry is going.
What type of system pressure regulator are you running?
#18
_torbirdie_
_torbirdie_
-
- Guests
Posted 19 March 2010 - 07:47 PM
I have had success with hr12 in other older systems that were designed for r12, tx valve style in under dash units. Flammable, yes, unsafe no. Other advantage is that anyone can buy hr12 without a licence and its not illegal to discharge into air or is it as dangerous to health as r134a.
HR12 is a suitable replacement for R12 and R134a. That's what I'm planning to use in my LX if the evaporator ever turns up from Hot Rod Air! Probably be Winter by the time it arrives...
HR12 operates on totally different pressures compared to R12 or R134a.
Be warned to that it is flammable, so if you use it make 100% sure that there are no leaks.
Other problems are compatible lube oils and as above with torbirdie, getting system pressures correct for efficiency will be hard.
You have been warned.
My advice would be to run R134a where ever you can, this is the way the industry is going.
What type of system pressure regulator are you running?
#19
TerrA LX
-
- Members
-
- 14,241 posts
Fulcrum Fixture
- Location:Sid 'n' knee
- Joined: 31-May 06
Posted 19 March 2010 - 08:22 PM
I have had success with hr12 in other older systems that were designed for r12, tx valve style in under dash units. Flammable, yes, unsafe no.
Would you call LPG safe?
Other advantage is that anyone can buy hr12 without a licence and its not illegal to discharge into air or is it as dangerous to health as r134a.
This in itself is a major problem, especially if people are not made aware of the hazards.
Also causes problems when people do not correctly label the system.
#20
_torbirdie_
_torbirdie_
-
- Guests
Posted 20 March 2010 - 09:32 PM
Would you call LPG safe?
As a fuel for cars and bbq's, or even a refrigerant.....yes, putting it in fire extinguishers, no
Edited by torbirdie, 20 March 2010 - 09:34 PM.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users
